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Physical Review Accelerators and Beams
Number of Followers: 4  Open Access journalISSN (Print) 1098-4402 - ISSN (Online) 2469-9888 Published by APS  [14 journals]
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- Longitudinal stacking of ion beams with pulsed electron beam cooling
Authors: He Zhao; Lijun Mao
First page: 030101
Abstract: Author(s): He Zhao and Lijun Mao
Longitudinal ion beam stacking with the combination of barrier rf system and beam cooling has been demonstrated in several experiments. Based on the bunching effect found in the pulsed electron beam cooling experiment at HIRFL-CSRm, we propose a new beam stacking scheme using only pulsed electron be…
[Phys. Rev. Accel. Beams 26, 030101] Published Tue Mar 07, 2023
Keywords: Low- and Intermediate-Energy Accelerators
Citation: Phys. Rev. Accel. Beams 26, 030101 (2023)
PubDate: 2023-03-07T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.030101
Issue No: Vol. 26, No. 3 (2023)
- Experimental exploration of compressed beam dynamics in an energy recovery
linac with comparison to simulations
Authors: Miho Shimada; Norio Nakamura, Tsukasa Miyajima, Yosuke Honda, Takashi Obina, Ryukou Kato, Masafumi Fukuda, Nora P. Norvell, Olga Tanaka, Hiroshi Sakai
First page: 030102
Abstract: Author(s): Miho Shimada, Norio Nakamura, Tsukasa Miyajima, Yosuke Honda, Takashi Obina, Ryukou Kato, Masafumi Fukuda, Nora P. Norvell, Olga Tanaka, and Hiroshi Sakai
The compact energy recovery linac (cERL) has been developed for industrial applications since 2017. Applications such as free electron laser require a compressed beam with a small energy spread and transverse emittance. The typical operation energy of cERL is an intermediate energy region close to 1…
[Phys. Rev. Accel. Beams 26, 030102] Published Wed Mar 22, 2023
Keywords: Low- and Intermediate-Energy Accelerators
Citation: Phys. Rev. Accel. Beams 26, 030102 (2023)
PubDate: 2023-03-22T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.030102
Issue No: Vol. 26, No. 3 (2023)
- Reconstruction of x-ray free-electron laser pulse duration and energy
chirp from spectral intensity fluctuations
Authors: River R. Robles; Aliaksei Halavanau, David Cesar, Alberto Lutman, Gennady Stupakov
First page: 030701
Abstract: Author(s): River R. Robles, Aliaksei Halavanau, David Cesar, Alberto Lutman, and Gennady Stupakov
Accurate measurements of the x-ray pulse duration produced by x-ray free-electron lasers (XFELs) typically rely on longitudinal electron beam phase space diagnostics, e.g., an x-band transverse deflecting cavity (XTCAV). An alternative group of methods is based on measurements of radiation statistic…
[Phys. Rev. Accel. Beams 26, 030701] Published Thu Mar 02, 2023
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 26, 030701 (2023)
PubDate: 2023-03-02T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.030701
Issue No: Vol. 26, No. 3 (2023)
- Transverse gradient undulator in a storage ring x-ray free electron laser
oscillator
Authors: Yuanshen Li; Ryan Lindberg, Kwang-Je Kim
First page: 030702
Abstract: Author(s): Yuanshen Li, Ryan Lindberg, and Kwang-Je Kim
Modern electron storage rings produce bright x rays via spontaneous synchrotron emission, which is useful for a variety of scientific applications. The x-ray free-electron laser oscillator (XFELO) has the potential to amplify this output, both in terms of peak power and photon coherence. However, ev…
[Phys. Rev. Accel. Beams 26, 030702] Published Wed Mar 08, 2023
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 26, 030702 (2023)
PubDate: 2023-03-08T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.030702
Issue No: Vol. 26, No. 3 (2023)
- Modeling of three-dimensional betatron oscillation and radiation reaction
in plasma accelerators
Authors: Yulong Liu; Ming Zeng
First page: 031301
Abstract: Author(s): Yulong Liu and Ming Zeng
Betatron oscillation is a commonly known phenomenon in laser or beam-driven plasma wakefield accelerators. In the conventional model, the plasma wake provides a linear focusing force to a relativistic electron, and the electron oscillates in one transverse direction with the betatron frequency propo…
[Phys. Rev. Accel. Beams 26, 031301] Published Thu Mar 02, 2023
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 26, 031301 (2023)
PubDate: 2023-03-02T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.031301
Issue No: Vol. 26, No. 3 (2023)
- Active nonperturbative stabilization of the laser-plasma-accelerated
electron beam source
Authors: Curtis Berger; Sam Barber, Fumika Isono, Kyle Jensen, Joseph Natal, Anthony Gonsalves, Jeroen van Tilborg
First page: 032801
Abstract: Author(s): Curtis Berger, Sam Barber, Fumika Isono, Kyle Jensen, Joseph Natal, Anthony Gonsalves, and Jeroen van Tilborg
Laser plasma accelerators have the ability to produce high-quality electron beams in compact, all-optical-driven configurations, with the electron beams uniquely suited for a wide variety of accelerator-based applications. However, fluctuations and drifts in the laser delivery to the mm-scale plasma…
[Phys. Rev. Accel. Beams 26, 032801] Published Wed Mar 15, 2023
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 26, 032801 (2023)
PubDate: 2023-03-15T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.032801
Issue No: Vol. 26, No. 3 (2023)
- Measurement of the longitudinal bunch-shape distribution for a
high-intensity negative hydrogen ion beam in the low-energy region
Authors: R. Kitamura; K. Futatsukawa, N. Hayashi, K. Hirano, Y. Kondo, S. Kosaka, T. Miyao, T. Morishita, Y. Nemoto, H. Oguri
First page: 032802
Abstract: Author(s): R. Kitamura, K. Futatsukawa, N. Hayashi, K. Hirano, Y. Kondo, S. Kosaka, T. Miyao, T. Morishita, Y. Nemoto, and H. Oguri
A bunch-shape monitor (BSM) is a useful device for performing longitudinal beam tuning using the pointwise longitudinal phase distribution measured at selected points in the beam transportation. To measure the longitudinal phase distribution of a low-energy negative hydrogen (${\mathrm{H}}^{−}$) ion…
[Phys. Rev. Accel. Beams 26, 032802] Published Mon Mar 20, 2023
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 26, 032802 (2023)
PubDate: 2023-03-20T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.032802
Issue No: Vol. 26, No. 3 (2023)
- Bayesian optimization of the beam injection process into a storage ring
Authors: Chenran Xu (徐晨冉); Tobias Boltz, Akira Mochihashi, Andrea Santamaria Garcia, Marcel Schuh, Anke-Susanne Müller
First page: 034601
Abstract: Author(s): Chenran Xu (徐晨冉), Tobias Boltz, Akira Mochihashi, Andrea Santamaria Garcia, Marcel Schuh, and Anke-Susanne Müller
We have evaluated the data-efficient Bayesian optimization method for the specific task of injection tuning in a circular accelerator. In this paper, we describe the implementation of this method at the Karlsruhe Research Accelerator with up to nine tuning parameters, including the determination of …
[Phys. Rev. Accel. Beams 26, 034601] Published Fri Mar 03, 2023
Keywords: Computing, Machine Learning, and Algorithms
Citation: Phys. Rev. Accel. Beams 26, 034601 (2023)
PubDate: 2023-03-03T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.034601
Issue No: Vol. 26, No. 3 (2023)
- Toward transparent injection with a multipole injection kicker in a
storage ring
Authors: R. Ollier; P. Alexandre, R. Ben El Fekih, A. Gamelin, N. Hubert, M. Labat, L. S. Nadolski, M.-A. Tordeux
First page: 020101
Abstract: Author(s): R. Ollier, P. Alexandre, R. Ben El Fekih, A. Gamelin, N. Hubert, M. Labat, L. S. Nadolski, and M.-A. Tordeux
Achieving transparent Top-Up injection, characterized by stored beam position perturbations lower than 10% of the root mean square (rms) size of the stored beam, is very challenging for third-generation storage ring-based synchrotron light sources. The standard bump-based injection scheme used at SO…
[Phys. Rev. Accel. Beams 26, 020101] Published Tue Feb 21, 2023
Keywords: Low- and Intermediate-Energy Accelerators
Citation: Phys. Rev. Accel. Beams 26, 020101 (2023)
PubDate: 2023-02-21T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.020101
Issue No: Vol. 26, No. 2 (2023)
- Cavity based x-ray free electron laser demonstrator at the European X-ray
Free Electron Laser facility
Authors: Patrick Rauer; Winfried Decking, Dirk Lipka, Daniel Thoden, Torsten Wohlenberg, Immo Bahns, Ulf Brueggmann, Sara Casalbuoni, Massimiliano Di Felice, Martin Dommach, Jan Grünert, Suren Karabekyan, Andreas Koch, Daniele La Civita, Benoit Rio, Liubov Samoylova, Harald Sinn, Maurizio Vannoni, Christopher Youngman, Wolfgang Hillert, Jörg Rossbach
First page: 020701
Abstract: Author(s): Patrick Rauer, Winfried Decking, Dirk Lipka, Daniel Thoden, Torsten Wohlenberg, Immo Bahns, Ulf Brueggmann, Sara Casalbuoni, Massimiliano Di Felice, Martin Dommach, Jan Grünert, Suren Karabekyan, Andreas Koch, Daniele La Civita, Benoit Rio, Liubov Samoylova, Harald Sinn, Maurizio Vannoni, Christopher Youngman, Wolfgang Hillert, and Jörg Rossbach
In this article, the concept of a recently funded R project for the installation of a proof-of-concept cavity-based x-ray free electron laser (CBXFEL) demonstrator experiment at the European XFEL facility is presented, with the first results expected in 2024. It is composed of an x-ray cavity design…
[Phys. Rev. Accel. Beams 26, 020701] Published Tue Feb 21, 2023
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 26, 020701 (2023)
PubDate: 2023-02-21T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.020701
Issue No: Vol. 26, No. 2 (2023)
- Toward a diffraction limited light source
Authors: Pantaleo Raimondi; Simone Maria Liuzzo
First page: 021601
Abstract: Author(s): Pantaleo Raimondi and Simone Maria Liuzzo
The design of a large fourth generation light source may open a new era for synchrotron radiation based x-ray science.
[Phys. Rev. Accel. Beams 26, 021601] Published Wed Feb 22, 2023
Keywords: Design Studies
Citation: Phys. Rev. Accel. Beams 26, 021601 (2023)
PubDate: 2023-02-22T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.021601
Issue No: Vol. 26, No. 2 (2023)
- Quasi-Alvarez drift-tube linac structures for heavy ion therapy
accelerator facilities
Authors: Mohammad Reza Khalvati; Vittorio Bencini, Suitbert Ramberger
First page: 022001
Abstract: Author(s): Mohammad Reza Khalvati, Vittorio Bencini, and Suitbert Ramberger
Next generation heavy ion therapy and research facilities require efficient accelerating structures. Particularly, at low beam energies, right after the standard scheme of the ion source, low-energy beam transfer, and radio-frequency quadrupole (RFQ), several options for accelerating structures are …
[Phys. Rev. Accel. Beams 26, 022001] Published Thu Feb 16, 2023
Keywords: Radio Frequency Calculations and Technology
Citation: Phys. Rev. Accel. Beams 26, 022001 (2023)
PubDate: 2023-02-16T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.022001
Issue No: Vol. 26, No. 2 (2023)
- Beam shaping using an ultrahigh vacuum multileaf collimator and emittance
exchange beamline
Authors: N. Majernik; G. Andonian, W. Lynn, S. Kim, C. Lorch, R. Roussel, S. Doran, E. Wisniewski, C. Whiteford, P. Piot, J. Power, J. B. Rosenzweig
First page: 022801
Abstract: Author(s): N. Majernik, G. Andonian, W. Lynn, S. Kim, C. Lorch, R. Roussel, S. Doran, E. Wisniewski, C. Whiteford, P. Piot, J. Power, and J. B. Rosenzweig
A multileaf collimator with an emittance exchange beamline allows generation of highly variable longitudinal bunch profiles.
[Phys. Rev. Accel. Beams 26, 022801] Published Wed Feb 22, 2023
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 26, 022801 (2023)
PubDate: 2023-02-22T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.022801
Issue No: Vol. 26, No. 2 (2023)
- Nonlinear cooling of an annular beam distribution
Authors: A. Bazzani; F. Capoani, M. Giovannozzi, R. Tomás
First page: 024001
Abstract: Author(s): A. Bazzani, F. Capoani, M. Giovannozzi, and R. Tomás
In recent years, intense efforts have been devoted to studying how nonlinear effects can be used to shape the transverse beam distribution by means of an adiabatic crossing of nonlinear resonances. By this approach, it is possible to split the beams in the transverse plane so that the initial single…
[Phys. Rev. Accel. Beams 26, 024001] Published Thu Feb 02, 2023
Keywords: Single-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 26, 024001 (2023)
PubDate: 2023-02-02T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.024001
Issue No: Vol. 26, No. 2 (2023)
- High-intensity effects on longitudinal bunch merging in hadron
synchrotrons
Authors: Y. S. Yuan; G. Franchetti, H. Y. Liu, S. Wang
First page: 024201
Abstract: Author(s): Y. S. Yuan, G. Franchetti, H. Y. Liu, and S. Wang
Longitudinal rf manipulation schemes have been widely employed for achieving various beam experiments and applications in heavy ion or proton (hadron) synchrotrons. For high-intensity hadron beams, longitudinal space charge and cavity beam loading play a key role in beam intensity limitations since …
[Phys. Rev. Accel. Beams 26, 024201] Published Thu Feb 09, 2023
Keywords: Low-Energy, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 26, 024201 (2023)
PubDate: 2023-02-09T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.024201
Issue No: Vol. 26, No. 2 (2023)
- Experimental studies of circular attractors in the first rf-based electron
cooler
Authors: S. Seletskiy; A. Fedotov, D. Kayran
First page: 024401
Abstract: Author(s): S. Seletskiy, A. Fedotov, and D. Kayran
In electron coolers, under certain conditions, a circular attractor (CA) can appear in either a longitudinal or a transverse phase space of cooled ion bunches. In the presence of an attractor, ions with small amplitudes of synchrotron or betatron oscillations are getting excited rather than being da…
[Phys. Rev. Accel. Beams 26, 024401] Published Wed Feb 08, 2023
Keywords: Relativistic, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 26, 024401 (2023)
PubDate: 2023-02-08T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.024401
Issue No: Vol. 26, No. 2 (2023)
- Differentiable self-consistent space-charge simulation for accelerator
design
Authors: Ji Qiang
First page: 024601
Abstract: Author(s): Ji Qiang
The nonlinear space-charge effects in a high intensity or high brightness accelerator can have a significant impact on the beam properties through the accelerator. These effects are included in the accelerator design via self-consistent multiparticle tracking simulations. In order to study the sensi…
[Phys. Rev. Accel. Beams 26, 024601] Published Wed Feb 08, 2023
Keywords: Computing, Machine Learning, and Algorithms
Citation: Phys. Rev. Accel. Beams 26, 024601 (2023)
PubDate: 2023-02-08T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.024601
Issue No: Vol. 26, No. 2 (2023)
- Time series forecasting methods and their applications to particle
accelerators
Authors: Sichen Li; Andreas Adelmann
First page: 024801
Abstract: Author(s): Sichen Li and Andreas Adelmann
Particle accelerators are complex facilities that produce large amounts of structured data and have clear optimization goals as well as precisely defined control requirements. As such they are naturally amenable to data-driven research methodologies. The data from sensors and monitors inside the acc…
[Phys. Rev. Accel. Beams 26, 024801] Published Wed Feb 15, 2023
Keywords: Review Articles
Citation: Phys. Rev. Accel. Beams 26, 024801 (2023)
PubDate: 2023-02-15T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.024801
Issue No: Vol. 26, No. 2 (2023)
- Asymmetric beam-beam effect study in a highly polarized electron-ion
collider
Authors: Ming Xuan Chang; Jian Cheng Yang, Lei Wang, Jie Liu, He Zhao, Guo Dong Shen, Hang Ren, Yun Zhe Gao, Qi Yu Kong, Fu Ma, Min Xiang Li
First page: 011001
Abstract: Author(s): Ming Xuan Chang, Jian Cheng Yang, Lei Wang, Jie Liu, He Zhao, Guo Dong Shen, Hang Ren, Yun Zhe Gao, Qi Yu Kong, Fu Ma, and Min Xiang Li
The EicC (The highly polarized Electron-ion collider in China) project proposes a scheme with different numbers of bunches in the two rings, which leads to an asymmetric beam-beam effect, also known as the gear-change effect. In order to investigate the feasibility of asymmetric collision in EicC, a…
[Phys. Rev. Accel. Beams 26, 011001] Published Wed Jan 11, 2023
Keywords: High-Energy Accelerators and Colliders
Citation: Phys. Rev. Accel. Beams 26, 011001 (2023)
PubDate: 2023-01-11T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.011001
Issue No: Vol. 26, No. 1 (2023)
- Creation and direct laser acceleration of positrons in a single stage
Authors: Bertrand Martinez; Bernardo Barbosa, Marija Vranic
First page: 011301
Abstract: Author(s): Bertrand Martinez, Bernardo Barbosa, and Marija Vranic
Relativistic positron beams are required for fundamental research in nonlinear strong field QED, plasma physics, and laboratory astrophysics. Positrons are difficult to create and manipulate due to their short lifetime, and their energy gain is limited by the accelerator size in conventional facilit…
[Phys. Rev. Accel. Beams 26, 011301] Published Mon Jan 30, 2023
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 26, 011301 (2023)
PubDate: 2023-01-30T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.011301
Issue No: Vol. 26, No. 1 (2023)
- Anomaly detection at the European X-ray Free Electron Laser using a
parity-space-based method
Authors: A. Eichler; J. Branlard, J. H. K. Timm
First page: 012801
Abstract: Author(s): A. Eichler, J. Branlard, and J. H. K. Timm
A new parity space method is used to detect anomalies in the operation of large-scale superconducting accelerators.[Phys. Rev. Accel. Beams 26, 012801] Published Wed Jan 04, 2023
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 26, 012801 (2023)
PubDate: 2023-01-04T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.012801
Issue No: Vol. 26, No. 1 (2023)
- Electromagnetic design of the transition section between modules of a
wakefield accelerator
Authors: A. Siy; N. Behdad, J. Booske, G. Waldschmidt, A. Zholents
First page: 012802
Abstract: Author(s): A. Siy, N. Behdad, J. Booske, G. Waldschmidt, and A. Zholents
The electromagnetic design of a transition section consisting of couplers for extracting the 180-GHz ${\mathrm{TM}}_{01}$ accelerating mode and 190-GHz ${\mathrm{HE}}_{11}$ dipole mode of a cylindrical corrugated waveguide used as a collinear wakefield accelerator is presented. Extraction of the hig…
[Phys. Rev. Accel. Beams 26, 012802] Published Wed Jan 18, 2023
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 26, 012802 (2023)
PubDate: 2023-01-18T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.012802
Issue No: Vol. 26, No. 1 (2023)
- High-resolution cavity bunch arrival-time monitor for charges less than
1 pC
Authors: Chuangye Song; Yanqing Jia, Zhuoyuan Liu, Yingchao Du, Wenhui Huang
First page: 012803
Abstract: Author(s): Chuangye Song, Yanqing Jia, Zhuoyuan Liu, Yingchao Du, and Wenhui Huang
Pump-probe experiments using x-ray pulses or MeV ultrafast electrons as probes are important for studying ultrafast dynamic processes at the atomic level. Increasing demand is being focused on ultrashort x-ray pulses and electron pulses to research processes down to a few femtoseconds. Due to the li…
[Phys. Rev. Accel. Beams 26, 012803] Published Wed Jan 18, 2023
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 26, 012803 (2023)
PubDate: 2023-01-18T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.012803
Issue No: Vol. 26, No. 1 (2023)
- SuperKEKB vacuum system operation in the last 6 years operation
Authors: Y. Suetsugu; K. Shibata, T. Ishibashi, M. Shirai, S. Terui, K. Kanazawa, H. Hisamatsu, M. L. Yao
First page: 013201
Abstract: Author(s): Y. Suetsugu, K. Shibata, T. Ishibashi, M. Shirai, S. Terui, K. Kanazawa, H. Hisamatsu, and M. L. Yao
The vacuum-system performance for the SuperKEKB electron and positron rings will inform the vacuum design of future high-current storage rings.
[Phys. Rev. Accel. Beams 26, 013201] Published Wed Jan 04, 2023
Keywords: Cryogenics and Vacuum Technology
Citation: Phys. Rev. Accel. Beams 26, 013201 (2023)
PubDate: 2023-01-04T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.013201
Issue No: Vol. 26, No. 1 (2023)
- Damping-ring-free electron injector proposal for future linear colliders
Authors: T. Xu; M. Kuriki, P. Piot, J. G. Power
First page: 014001
Abstract: Author(s): T. Xu, M. Kuriki, P. Piot, and J. G. Power
The current designs of future electron-positron linear colliders incorporate large and complex damping rings to produce asymmetric beams for beamstrahlung suppression. Here, we present the design of an electron injector capable of delivering flat electron beams with phase-space partition comparable …
[Phys. Rev. Accel. Beams 26, 014001] Published Thu Jan 12, 2023
Keywords: Single-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 26, 014001 (2023)
PubDate: 2023-01-12T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.014001
Issue No: Vol. 26, No. 1 (2023)
- Quantum mechanical derivation of radio-frequency-driven coherent beam
oscillations in storage rings
Authors: J. Slim; N. N. Nikolaev, F. Rathmann, A. Wirzba
First page: 014201
Abstract: Author(s): J. Slim, N. N. Nikolaev, F. Rathmann, and A. Wirzba
The study of the approach to the quantum ground state and the possibility to detect displacements of macroscopic bodies close to the quantum limit represent pressing challenges in modern physics. In the recent experiment of the JEDI Collaboration at the COSY storage ring, the coherent oscillations o…
[Phys. Rev. Accel. Beams 26, 014201] Published Fri Jan 06, 2023
Keywords: Low-Energy, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 26, 014201 (2023)
PubDate: 2023-01-06T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.014201
Issue No: Vol. 26, No. 1 (2023)
- Longitudinal mode-coupling instabilities of proton bunches in the CERN
Super Proton Synchrotron
Authors: Ivan Karpov
First page: 014401
Abstract: Author(s): Ivan Karpov
In this paper, we study single-bunch instabilities observed in the CERN Super Proton Synchrotron (SPS). According to the linearized Vlasov theory, radial or azimuthal mode-coupling instabilities result from a coupling of bunch-oscillation modes, which belong to either the same or adjacent azimuthal …
[Phys. Rev. Accel. Beams 26, 014401] Published Thu Jan 12, 2023
Keywords: Relativistic, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 26, 014401 (2023)
PubDate: 2023-01-12T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.014401
Issue No: Vol. 26, No. 1 (2023)
- Spill ripple mitigation by bunched beam extraction with high frequency
synchrotron motion
Authors: S. Sorge; P. Forck, R. Singh
First page: 014402
Abstract: Author(s): S. Sorge, P. Forck, and R. Singh
Slow extraction of bunched beams is widely used for mitigating the formation of temporal microstructures on the extracted beam due to ripples of the accelerator magnets power supplies. That helps in experiments with slow detectors or measurements with low event rates. Additionally, in ion cancer the…
[Phys. Rev. Accel. Beams 26, 014402] Published Thu Jan 19, 2023
Keywords: Relativistic, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 26, 014402 (2023)
PubDate: 2023-01-19T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.014402
Issue No: Vol. 26, No. 1 (2023)
- Influence of vacuum chamber port terminations on beam coupling impedances
Authors: Thomas Flisgen; Shahnam Gorgi Zadeh, Erion Gjonaj
First page: 014601
Abstract: Author(s): Thomas Flisgen, Shahnam Gorgi Zadeh, and Erion Gjonaj
Vacuum chambers of particle accelerators are typically equipped with radio-frequency couplers. The couplers are employed to excite modes for particle acceleration, to extract the energy of higher-order modes, or for diagnostic purposes. From a network theory perspective, these couplers represent ter…
[Phys. Rev. Accel. Beams 26, 014601] Published Fri Jan 06, 2023
Keywords: Computing, Machine Learning, and Algorithms
Citation: Phys. Rev. Accel. Beams 26, 014601 (2023)
PubDate: 2023-01-06T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.014601
Issue No: Vol. 26, No. 1 (2023)
- Three-dimensional time-domain particle-in-cell calculations of impedances
and centroid deflections in a linear-accelerator cell
Authors: C. Thoma; D. R. Welch, A. M. Russell, R. E. Clark, D. V. Rose, W. A. Stygar, B. J. Kelsall
First page: 014602
Abstract: Author(s): C. Thoma, D. R. Welch, A. M. Russell, R. E. Clark, D. V. Rose, W. A. Stygar, and B. J. Kelsall
In linear induction accelerators, high-brightness electron beams are accelerated by voltages applied at gaps at discrete locations along the accelerator. At high currents, the beam itself induces wakefields in the accelerating gaps which can then feedback and distort the beam. The coupling of the ga…
[Phys. Rev. Accel. Beams 26, 014602] Published Wed Jan 11, 2023
Keywords: Computing, Machine Learning, and Algorithms
Citation: Phys. Rev. Accel. Beams 26, 014602 (2023)
PubDate: 2023-01-11T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.26.014602
Issue No: Vol. 26, No. 1 (2023)
- Novel bunch compressor chicane: The five-bend chicane
Authors: Donish Z. Khan; Tor O. Raubenheimer
First page: 090701
Abstract: Author(s): Donish Z. Khan and Tor O. Raubenheimer
Four dipole magnetic chicanes are typically used in high-performance accelerators to compress electron bunches to their final peak currents but subject the beam to emittance dilution due to the coherent synchrotron radiation (CSR) effect. In this paper, we present a new magnetic bunch compressor geo…
[Phys. Rev. Accel. Beams 25, 090701] Published Wed Sep 07, 2022
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 25, 090701 (2022)
PubDate: 2022-09-07T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.090701
Issue No: Vol. 25, No. 9 (2022)
- Misalignment effects on the performance and stability of x-ray free
electron laser oscillator
Authors: Ganesh Tiwari; Ryan R. Lindberg
First page: 090702
Abstract: Author(s): Ganesh Tiwari and Ryan R. Lindberg
We report on the effects of transverse spatial misalignment on the performance and stability of x-ray free electron laser oscillators (XFELOs). For this study, we adopt the FEL driven paraxial resonator model in which the transverse profile of the radiation field is represented by Gauss-Hermite mode…
[Phys. Rev. Accel. Beams 25, 090702] Published Thu Sep 15, 2022
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 25, 090702 (2022)
PubDate: 2022-09-15T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.090702
Issue No: Vol. 25, No. 9 (2022)
- Enhanced betatron x-ray emission in a laser wakefield accelerator and
wiggler due to collective oscillations of electrons
Authors: S. Mishra; B. S. Rao, A. Moorti, J. A. Chakera
First page: 090703
Abstract: Author(s): S. Mishra, B. S. Rao, A. Moorti, and J. A. Chakera
We report x-ray emission caused by betatron motion of electrons in a laser wakefield accelerator driven by high intensity ($∼4×{10}^{19}\text{ }\text{ }\mathrm{W}/{\mathrm{cm}}^{2}$) laser pulse interaction with a 4-mm long helium gas-jet and study the role of collective oscillation of electrons as …
[Phys. Rev. Accel. Beams 25, 090703] Published Wed Sep 28, 2022
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 25, 090703 (2022)
PubDate: 2022-09-28T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.090703
Issue No: Vol. 25, No. 9 (2022)
- $^{22}\mathrm{Na}$ activation level measurements of fused silica rods in
the LHC target absorber for neutrals compared to simulations
Authors: S. Yang; M. Sabate Gilarte, A. Tate, N. Santiago, R. Longo, S. Mazzoni, F. Cerutti, E. Bravin, M. Grosse Perdekamp, G. Lerner, D. Prelipcean, Z. Citron, B. Cole, S. Jackobsen, M. D. Kaminski, T. Koeth, C. Lantz, D. MacLean, A. Mignerey, M. Murray, M. Palm, M. Phipps, P. Steinberg, A. Tsinganis
First page: 091001
Abstract: Author(s): S. Yang, M. Sabate Gilarte, A. Tate, N. Santiago, R. Longo, S. Mazzoni, F. Cerutti, E. Bravin, M. Grosse Perdekamp, G. Lerner, D. Prelipcean, Z. Citron, B. Cole, S. Jackobsen, M. D. Kaminski, T. Koeth, C. Lantz, D. MacLean, A. Mignerey, M. Murray, M. Palm, M. Phipps, P. Steinberg, and A. Tsinganis
The Target Absorbers for Neutrals (TANs) are located in a high intensity radiation environment inside the tunnel of the Large Hadron Collider (LHC). TANs are positioned about 140 m downstream from the beam interaction points. Seven 40-cm long fused silica rods with different dopant specifications we…
[Phys. Rev. Accel. Beams 25, 091001] Published Tue Sep 20, 2022
Keywords: High-Energy Accelerators and Colliders
Citation: Phys. Rev. Accel. Beams 25, 091001 (2022)
PubDate: 2022-09-20T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.091001
Issue No: Vol. 25, No. 9 (2022)
- Design study of a dielectric laser undulator
Authors: Steffen A. Schmid; Uwe Niedermayer
First page: 091301
Abstract: Author(s): Steffen A. Schmid and Uwe Niedermayer
Dielectric laser acceleration (DLA) achieves remarkable gradients from the optical near fields of a grating structure. Tilting the dielectric grating with respect to the electron beam leads to deflection forces, and the DLA structure can be utilized as a microchip undulator. We investigate the beam …
[Phys. Rev. Accel. Beams 25, 091301] Published Tue Sep 06, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 091301 (2022)
PubDate: 2022-09-06T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.091301
Issue No: Vol. 25, No. 9 (2022)
- Multicell accelerating structure driven by a lens-focused THz pulse
Authors: S. Antipov; S. V. Kuzikov, A. A. Vikharev
First page: 091302
Abstract: Author(s): S. Antipov, S. V. Kuzikov, and A. A. Vikharev
Recently, gradients on the order of $1\text{ }\text{ }\mathrm{GV}/\mathrm{m}$ have been obtained with single-cycle ($∼1\text{ }\text{ }\mathrm{ps}$) THz pulses produced by the conversion of high peak power laser radiation, in nonlinear crystals ($∼1\text{ }\text{ }\mathrm{mJ}$, 1 ps, up to 3% conver…
[Phys. Rev. Accel. Beams 25, 091302] Published Wed Sep 07, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 091302 (2022)
PubDate: 2022-09-07T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.091302
Issue No: Vol. 25, No. 9 (2022)
- High efficiency uniform positron beam loading in a hollow channel plasma
wakefield accelerator
Authors: Shiyu Zhou; Jianfei Hua, Wei Lu, Weiming An, Qianqian Su, Warren B. Mori, Chan Joshi
First page: 091303
Abstract: Author(s): Shiyu Zhou, Jianfei Hua, Wei Lu, Weiming An, Qianqian Su, Warren B. Mori, and Chan Joshi
We propose a novel positron beam loading regime in a hollow plasma channel that can efficiently accelerate ${e}^{+}$ beam with a high gradient and narrow energy spread. In this regime, the ${e}^{+}$ beam coincides with the drive ${e}^{−}$ beam in time and space and their net current distribution det…
[Phys. Rev. Accel. Beams 25, 091303] Published Fri Sep 23, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 091303 (2022)
PubDate: 2022-09-23T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.091303
Issue No: Vol. 25, No. 9 (2022)
- Self-stabilizing positron acceleration in a plasma column
Authors: S. Diederichs; C. Benedetti, M. Thévenet, E. Esarey, J. Osterhoff, C. B. Schroeder
First page: 091304
Abstract: Author(s): S. Diederichs, C. Benedetti, M. Thévenet, E. Esarey, J. Osterhoff, and C. B. Schroeder
Plasma accelerators sustain extreme field gradients and potentially enable future compact linear colliders. Although tremendous progress has been achieved in accelerating electron beams in a plasma accelerator, positron acceleration with collider-relevant parameters is challenging. A recently propos…
[Phys. Rev. Accel. Beams 25, 091304] Published Wed Sep 28, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 091304 (2022)
PubDate: 2022-09-28T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.091304
Issue No: Vol. 25, No. 9 (2022)
- First experience with He conditioning of a superconducting rf
photoinjector
Authors: I. Petrushina; Y. Jing, V. N. Litvinenko, J. Ma, F. Severino, G. Narayan, T. Hayes, J. C. Brutus, L. Smart, K. Decker, S. Belomestnykh
First page: 092001
Abstract: Author(s): I. Petrushina, Y. Jing, V. N. Litvinenko, J. Ma, F. Severino, G. Narayan, T. Hayes, J. C. Brutus, L. Smart, K. Decker, and S. Belomestnykh
The recent achievements in the performance of superconducting rf (SRF) photoinjectors have opened a new era in the development of reliable high-brightness cw electron sources. While the SRF guns become one of the most promising technologies, the compatibility of the SRF environment with the complex …
[Phys. Rev. Accel. Beams 25, 092001] Published Tue Sep 06, 2022
Keywords: Radio Frequency Calculations and Technology
Citation: Phys. Rev. Accel. Beams 25, 092001 (2022)
PubDate: 2022-09-06T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.092001
Issue No: Vol. 25, No. 9 (2022)
- Strain prediction and benchmark with measurement in the Spallation Neutron
Source mercury target without gas injection
Authors: Bernard W. Riemer; Hao Jiang, Drew E. Winder
First page: 093001
Abstract: Author(s): Bernard W. Riemer, Hao Jiang, and Drew E. Winder
The 1.4-MW Spallation Neutron Source (SNS) currently operates as the world’s highest time-average power spallation source and uses mercury as the spallation target material. The mercury circulates through a stainless-steel target vessel and heat exchanger loop that removes the heat deposited from th…
[Phys. Rev. Accel. Beams 25, 093001] Published Wed Sep 28, 2022
Keywords: Targets, Collimators, and Beam Dumps
Citation: Phys. Rev. Accel. Beams 25, 093001 (2022)
PubDate: 2022-09-28T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.093001
Issue No: Vol. 25, No. 9 (2022)
- Ultimate bunch length and emittance performance of an MeV ultrafast
electron diffraction apparatus with a dc gun and a multicavity
superconducting rf linac
Authors: A. Bartnik; C. Gulliford, G. H. Hoffstaetter, J. Maxson
First page: 093401
Abstract: Author(s): A. Bartnik, C. Gulliford, G. H. Hoffstaetter, and J. Maxson
We present the design of a high repetition rate MeV energy ultrafast electron diffraction instrument based on a dc photoelectron gun and an superconducting rf (SRF) linac with multiple independently controlled accelerating and bunching cavities. The design is based on the existing Cornell photoinjec…
[Phys. Rev. Accel. Beams 25, 093401] Published Thu Sep 22, 2022
Keywords: Particle-Beam Sources
Citation: Phys. Rev. Accel. Beams 25, 093401 (2022)
PubDate: 2022-09-22T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.093401
Issue No: Vol. 25, No. 9 (2022)
- Low divergence proton beams from a laser-plasma accelerator at kHz
repetition rate
Authors: Dan Levy; Igor A. Andriyash, Stefan Haessler, Jaismeen Kaur, Marie Ouillé, Alessandro Flacco, Eyal Kroupp, Victor Malka, Rodrigo Lopez-Martens
First page: 093402
Abstract: Author(s): Dan Levy, Igor A. Andriyash, Stefan Haessler, Jaismeen Kaur, Marie Ouillé, Alessandro Flacco, Eyal Kroupp, Victor Malka, and Rodrigo Lopez-Martens
Proton beams with up to 100 pC bunch charge, 0.48 MeV cutoff energy, and divergence as low as 3° were generated from solid targets at kHz repetition rate by a few-mJ femtosecond laser under controlled plasma conditions. The beam spatial profile was measured using a small aperture scanning time-of-fl…
[Phys. Rev. Accel. Beams 25, 093402] Published Mon Sep 26, 2022
Keywords: Particle-Beam Sources
Citation: Phys. Rev. Accel. Beams 25, 093402 (2022)
PubDate: 2022-09-26T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.093402
Issue No: Vol. 25, No. 9 (2022)
- Schottky signal modification as a diagnostic tool for coherent electron
cooling
Authors: W. F. Bergan; M. Blaskiewicz, G. Stupakov
First page: 094401
Abstract: Author(s): W. F. Bergan, M. Blaskiewicz, and G. Stupakov
Coherent electron cooling is a promising technique to cool high-intensity hadron bunches by imprinting the noise in the hadron beam on a beam of electrons, amplifying the electron density modulations, and using them to apply cooling kicks to the hadrons. The typical size for these perturbations can …
[Phys. Rev. Accel. Beams 25, 094401] Published Mon Sep 12, 2022
Keywords: Relativistic, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 25, 094401 (2022)
PubDate: 2022-09-12T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.094401
Issue No: Vol. 25, No. 9 (2022)
- Novel perturbation method for judging the stability of the equilibrium
solution in the presence of passive harmonic cavities
Authors: Tianlong He
First page: 094402
Abstract: Author(s): Tianlong He
When using the harmonic cavity to stretch the beam in electron storage rings, we expect the beam can be lengthened effectively and also stably. Semianalytical approaches can be used to obtain the equilibrium distribution but generally failed in the prediction of its stability. In this work, a novel …
[Phys. Rev. Accel. Beams 25, 094402] Published Thu Sep 29, 2022
Keywords: Relativistic, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 25, 094402 (2022)
PubDate: 2022-09-29T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.094402
Issue No: Vol. 25, No. 9 (2022)
- Predicting the transverse emittance of space charge dominated beams using
the phase advance scan technique and a fully connected neural network
Authors: F. Mayet; M. Hachmann, K. Floettmann, F. Burkart, H. Dinter, W. Kuropka, T. Vinatier, R. Assmann
First page: 094601
Abstract: Author(s): F. Mayet, M. Hachmann, K. Floettmann, F. Burkart, H. Dinter, W. Kuropka, T. Vinatier, and R. Assmann
The transverse emittance of a charged particle beam is an important figure of merit for many accelerator applications, such as ultrafast electron diffraction, free electron lasers, and the operation of new compact accelerator concepts in general. One of the easiest to implement methods to determine …
[Phys. Rev. Accel. Beams 25, 094601] Published Tue Sep 06, 2022
Keywords: Computing and Algorithms
Citation: Phys. Rev. Accel. Beams 25, 094601 (2022)
PubDate: 2022-09-06T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.094601
Issue No: Vol. 25, No. 9 (2022)
- Synchrotron radiation interferometry for beam size measurement at low
current and in large dynamic range
Authors: Wei Li; Jun Yan, Peifan Liu, Ying K. Wu
First page: 080702
Abstract: Author(s): Wei Li, Jun Yan, Peifan Liu, and Ying K. Wu
The Synchrotron Radiation Interferometry (SRI) has become a widely used technique to measure the small transverse size of the electron beam in the storage ring. In a typical SRI system for the routine storage ring operation, synchrotron radiation from a dipole magnet is used to illuminate a double s…
[Phys. Rev. Accel. Beams 25, 080702] Published Wed Aug 17, 2022
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 25, 080702 (2022)
PubDate: 2022-08-17T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.080702
Issue No: Vol. 25, No. 8 (2022)
- Experimental study of transverse effects in planar dielectric wakefield
accelerating structures with elliptical beams
Authors: Y. Saveliev; T. J. Overton, T. H. Pacey, N. Joshi, S. Mathisen, B. D. Muratori, N. Thompson, M. P. King, G. Xia
First page: 081302
Abstract: Author(s): Y. Saveliev, T. J. Overton, T. H. Pacey, N. Joshi, S. Mathisen, B. D. Muratori, N. Thompson, M. P. King, and G. Xia
The main obstacle to the practical implementation of the dielectric wakefield acceleration (DWA) concept is the development of the beam breakup instability due to transverse dipole wakefields generated when the beam propagates off axis in the accelerating structure. One of the methods to suppress th…
[Phys. Rev. Accel. Beams 25, 081302] Published Wed Aug 24, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 081302 (2022)
PubDate: 2022-08-24T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.081302
Issue No: Vol. 25, No. 8 (2022)
- Observation of quenching-induced magnetic flux trapping using a magnetic
field and temperature mapping system
Authors: Takafumi Okada; Eiji Kako, Mika Masuzawa, Hiroshi Sakai, Ryuichi Ueki, Kensei Umemori, Tsuyoshi Tajima
First page: 082002
Abstract: Author(s): Takafumi Okada, Eiji Kako, Mika Masuzawa, Hiroshi Sakai, Ryuichi Ueki, Kensei Umemori, and Tsuyoshi Tajima
Highly efficient superconducting radio-frequency cavities exhibit low heat loss and are used as components in accelerators and superconducting devices due to their high $Q$-values. The precise location of magnetic flux trapping in cavities is necessary to identify its effects on the performance of s…
[Phys. Rev. Accel. Beams 25, 082002] Published Mon Aug 29, 2022
Keywords: Radio Frequency Calculations and Technology
Citation: Phys. Rev. Accel. Beams 25, 082002 (2022)
PubDate: 2022-08-29T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.082002
Issue No: Vol. 25, No. 8 (2022)
- Coupled bunch mode zero correction using orbit measurements and rf system
phase feedback
Authors: P. Kallakuri; A. Brill, J. Carwardine, N. Sereno
First page: 082801
Abstract: Author(s): P. Kallakuri, A. Brill, J. Carwardine, and N. Sereno
The target bandwidth of the Advanced Photon Source Upgrade (APS-U) fast orbit feedback (FOFB) is dc-1000 Hz where the synchrotron tune will be between 100 and 560 Hz. This overlap places coupled bunch mode 0 (CBM0) induced horizontal position offsets within the FOFB bandwidth range, affecting our ab…
[Phys. Rev. Accel. Beams 25, 082801] Published Wed Aug 17, 2022
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 25, 082801 (2022)
PubDate: 2022-08-17T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.082801
Issue No: Vol. 25, No. 8 (2022)
- Dynamic pressure evolution during the LHC operation
Authors: S. Bilgen; G. Sattonnay, B. Mercier, V. Baglin, B. Henrist
First page: 083101
Abstract: Author(s): S. Bilgen, G. Sattonnay, B. Mercier, V. Baglin, and B. Henrist
For the accelerator community and the vacuum scientists, the understanding of the beam interactions with a vacuum chamber is fundamental to provide solutions to mitigate pressure rises induced by electron, photon, and ion molecular desorption. Moreover, beam instabilities induced by ion and electron…
[Phys. Rev. Accel. Beams 25, 083101] Published Mon Aug 29, 2022
Keywords: Accelerator Materials and Surfaces
Citation: Phys. Rev. Accel. Beams 25, 083101 (2022)
PubDate: 2022-08-29T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.083101
Issue No: Vol. 25, No. 8 (2022)
- Demonstration of sub-$\mathrm{GV}/\mathrm{m}$ accelerating field in a
photoemission electron gun powered by nanosecond $X$-band radio-frequency
pulses
Authors: W. H. Tan; S. Antipov, D. S. Doran, G. Ha, C. Jing, E. Knight, S. Kuzikov, W. Liu, X. Lu, P. Piot, J. G. Power, J. Shao, C. Whiteford, E. E. Wisniewski
First page: 083402
Abstract: Author(s): W. H. Tan, S. Antipov, D. S. Doran, G. Ha, C. Jing, E. Knight, S. Kuzikov, W. Liu, X. Lu, P. Piot, J. G. Power, J. Shao, C. Whiteford, and E. E. Wisniewski
Radio-frequency (rf) photoemission electron guns operating at higher accelerating gradients offer a pathway to produce brighter electron bunches. Brighter beams are expected to revolutionize many areas of science: they could form the backbone of next-generation compact x-ray free-electron lasers or …
[Phys. Rev. Accel. Beams 25, 083402] Published Wed Aug 24, 2022
Keywords: Particle-Beam Sources
Citation: Phys. Rev. Accel. Beams 25, 083402 (2022)
PubDate: 2022-08-24T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.083402
Issue No: Vol. 25, No. 8 (2022)
- Landau damping of transverse head-tail instabilities with a pulsed
electron lens in hadron synchrotrons
Authors: Vadim Gubaidulin; Vladimir Kornilov, Oliver Boine-Frankenheim, Elias Métral
First page: 084401
Abstract: Author(s): Vadim Gubaidulin, Vladimir Kornilov, Oliver Boine-Frankenheim, and Elias Métral
A pulsed electron lens produces a betatron tune shift along a hadron bunch as a function of the longitudinal coordinates, which is a longitudinal detuning. An example of transverse detuning is the tune shifts due to octupole magnets. This paper considers a pulsed electron lens as a measure to mitiga…
[Phys. Rev. Accel. Beams 25, 084401] Published Wed Aug 24, 2022
Keywords: Relativistic, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 25, 084401 (2022)
PubDate: 2022-08-24T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.084401
Issue No: Vol. 25, No. 8 (2022)
- Generation of primary photons through inverse Compton scattering using a
Monte Carlo simulation code
Authors: Gianfranco Paternò; Paolo Cardarelli, Matteo Bianchini, Angelo Taibi, Illya Drebot, Vittoria Petrillo, Ryoichi Hajima
First page: 084601
Abstract: Author(s): Gianfranco Paternò, Paolo Cardarelli, Matteo Bianchini, Angelo Taibi, Illya Drebot, Vittoria Petrillo, and Ryoichi Hajima
Photon sources based on inverse Compton scattering, namely, the interaction between relativistic electrons and laser photons, are emerging as quasimonochromatic energy-tunable sources either as compact alternatives to synchrotron facilities for the production of low-energy (10–100 keV) x rays or to …
[Phys. Rev. Accel. Beams 25, 084601] Published Wed Aug 24, 2022
Keywords: Computing and Algorithms
Citation: Phys. Rev. Accel. Beams 25, 084601 (2022)
PubDate: 2022-08-24T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.084601
Issue No: Vol. 25, No. 8 (2022)
- Hybrid macroparticle algorithm for modeling space charge
Authors: Paul M. Jung; Thomas Planche, Richard Baartman
First page: 084602
Abstract: Author(s): Paul M. Jung, Thomas Planche, and Richard Baartman
A space charge algorithm is constructed that is a hybrid between envelope and multiparticle models. The transverse dynamics is simplified by tracking the transverse envelope of each macroparticle. The equations of motion are derived from the Hamiltonian-fluid formulation of the Vlasov Poisson system…
[Phys. Rev. Accel. Beams 25, 084602] Published Mon Aug 29, 2022
Keywords: Computing and Algorithms
Citation: Phys. Rev. Accel. Beams 25, 084602 (2022)
PubDate: 2022-08-29T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.084602
Issue No: Vol. 25, No. 8 (2022)
- $X$-band two-stage rf pulse compression system with correction cavity
chain
Authors: Xiancai Lin; Hao Zha, Jiaru Shi, Yuliang Jiang, Fangjun Hu, Weihang Gu, Qiang Gao, Huaibi Chen
First page: 120401
Abstract: Author(s): Xiancai Lin, Hao Zha, Jiaru Shi, Yuliang Jiang, Fangjun Hu, Weihang Gu, Qiang Gao, and Huaibi Chen
A compact $X$-band two-stage rf pulse compression system has been successfully designed, fabricated, and tested at Tsinghua $X$-band high-power test stand. The pulse compression system consists of a correction cavity chain, a first-stage, and a second-stage storage cavity. The correction cavity chai…
[Phys. Rev. Accel. Beams 25, 120401] Published Tue Dec 13, 2022
Keywords: Pulsed-Power Accelerators, Technology, and Dynamics
Citation: Phys. Rev. Accel. Beams 25, 120401 (2022)
PubDate: 2022-12-13T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.120401
Issue No: Vol. 25, No. 12 (2022)
- SwissFEL double bunch operation
Authors: Martin Paraliev et al.
First page: 120701
Abstract: Author(s): Martin Paraliev et al.
SwissFEL has a unique capability, among the normal conducting linac-based light sources, to simultaneously serve two separate undulator lines (Aramis and Athos) up to the machine repetition rate of 100 Hz using the double bunch operation mode. It increases twice the experiments throughput of the fac…
[Phys. Rev. Accel. Beams 25, 120701] Published Fri Dec 02, 2022
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 25, 120701 (2022)
PubDate: 2022-12-02T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.120701
Issue No: Vol. 25, No. 12 (2022)
- Superradiant parametric x-ray emission
Authors: I. D. Feranchuk; N. Q. San, O. D. Skoromnik
First page: 120702
Abstract: Author(s): I. D. Feranchuk, N. Q. San, and O. D. Skoromnik
We compute a spectrum of parametric x-ray radiation inside a crystal from a bunch of electrons, which is periodically modulated in density. We consider that the bunch of electrons is exiting from an x-ray free-electron laser (XFEL) channel. We demonstrate that in the case of a resonance between the …
[Phys. Rev. Accel. Beams 25, 120702] Published Fri Dec 23, 2022
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 25, 120702 (2022)
PubDate: 2022-12-23T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.120702
Issue No: Vol. 25, No. 12 (2022)
- Suppression of the eighth-order space-charge-induced resonance
Authors: Takaaki Yasui; Yoshinori Kurimoto
First page: 121001
Abstract: Author(s): Takaaki Yasui and Yoshinori Kurimoto
The eighth-order space-charge-induced resonance $8{ν}_{y}=171$ was identified as the source of beam losses and suppressed in the main ring synchrotron of the Japan Proton Accelerator Research Complex. Identification and interpretation were performed using investigations of the lost particles, Poinca…
[Phys. Rev. Accel. Beams 25, 121001] Published Wed Dec 14, 2022
Keywords: High-Energy Accelerators and Colliders
Citation: Phys. Rev. Accel. Beams 25, 121001 (2022)
PubDate: 2022-12-14T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.121001
Issue No: Vol. 25, No. 12 (2022)
- RHIC optics and spin dynamics with snakes and rotators
Authors: F. Méot; H. Huang, V. Ptitsyn, V. Ranjbar, G. Robert-Demolaize, V. Schoefer, V. Morozov
First page: 121002
Abstract: Author(s): F. Méot, H. Huang, V. Ptitsyn, V. Ranjbar, G. Robert-Demolaize, V. Schoefer, and V. Morozov
The operation of RHIC collider rings in polarized proton runs includes helical snakes, which allow for preserving polarization during acceleration to store energies. The RHIC lattice also includes spin rotators, operated when nonvertical polarization or corrections to the orientation of polarization…
[Phys. Rev. Accel. Beams 25, 121002] Published Tue Dec 27, 2022
Keywords: High-Energy Accelerators and Colliders
Citation: Phys. Rev. Accel. Beams 25, 121002 (2022)
PubDate: 2022-12-27T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.121002
Issue No: Vol. 25, No. 12 (2022)
- Design, fabrication, and tuning of a THz-driven electron gun
Authors: Samantha M. Lewis; Julian Merrick, Mohamed A. K. Othman, Andrew Haase, Sami Tantawi, Emilio A. Nanni
First page: 121301
Abstract: Author(s): Samantha M. Lewis, Julian Merrick, Mohamed A. K. Othman, Andrew Haase, Sami Tantawi, and Emilio A. Nanni
We present the design, fabrication, and cold testing of a THz-driven field emission electron gun. The gun is designed as a two-cell standing-wave structure with a copper tip inserted halfway into the first cell that serves as the field emission source. It is powered by a 110 GHz gyrotron and is expe…
[Phys. Rev. Accel. Beams 25, 121301] Published Wed Dec 14, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 121301 (2022)
PubDate: 2022-12-14T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.121301
Issue No: Vol. 25, No. 12 (2022)
- Design of a cylindrical corrugated waveguide for a collinear wakefield
accelerator
Authors: A. Siy; N. Behdad, J. Booske, G. Waldschmidt, A. Zholents
First page: 121601
Abstract: Author(s): A. Siy, N. Behdad, J. Booske, G. Waldschmidt, and A. Zholents
We present the design of a cylindrical corrugated waveguide for use in the A-STAR accelerator under development at Argonne National Laboratory. A-STAR is a high gradient, high bunch repetition rate collinear wakefield accelerator that uses a 1-mm inner radius corrugated waveguide to produce a $90\te…
[Phys. Rev. Accel. Beams 25, 121601] Published Wed Dec 07, 2022
Keywords: Design Studies
Citation: Phys. Rev. Accel. Beams 25, 121601 (2022)
PubDate: 2022-12-07T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.121601
Issue No: Vol. 25, No. 12 (2022)
- Design, fabrication, and characterization of a high-field high-temperature
superconducting Bi-2212 accelerator dipole magnet
Authors: Tengming Shen; Laura Garcia Fajardo, Cory Myers, Aurelio Hafalia, Jr., Jose Luis Rudeiros Fernández, Diego Arbelaez, Lucas Brouwer, Shlomo Caspi, Paolo Ferracin, Stephen Gourlay, Maxim Marchevsky, Ian Pong, Soren Prestemon, Reed Teyber, Marcos Turqueti, Xiaorong Wang, Jianyi Jiang, Ernesto Bosque, Jun Lu, Daniel Davis, Ulf Trociewitz, Eric Hellstrom, David Larbalestier
First page: 122401
Abstract: Author(s): Tengming Shen, Laura Garcia Fajardo, Cory Myers, Aurelio Hafalia, Jr., Jose Luis Rudeiros Fernández, Diego Arbelaez, Lucas Brouwer, Shlomo Caspi, Paolo Ferracin, Stephen Gourlay, Maxim Marchevsky, Ian Pong, Soren Prestemon, Reed Teyber, Marcos Turqueti, Xiaorong Wang, Jianyi Jiang, Ernesto Bosque, Jun Lu, Daniel Davis, Ulf Trociewitz, Eric Hellstrom, and David Larbalestier
The use of high-field superconducting magnets has furthered the development of medical diagnosis, fusion research, accelerators, and particle physics. High-temperature superconductors enable magnets more powerful than those possible with Nb-Ti (superconducting transition temperature ${T}_{c}$ of 9.2…
[Phys. Rev. Accel. Beams 25, 122401] Published Wed Dec 07, 2022
Keywords: Magnet Calculations and Technology
Citation: Phys. Rev. Accel. Beams 25, 122401 (2022)
PubDate: 2022-12-07T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.122401
Issue No: Vol. 25, No. 12 (2022)
- Concept of scanning magnet with distributed winding coils for particle
beam therapy
Authors: Takahiro Yamada; Kazuya Nagashima, Takuya Nomura, Seiji Soeda, Noriaki Hino
First page: 122402
Abstract: Author(s): Takahiro Yamada, Kazuya Nagashima, Takuya Nomura, Seiji Soeda, and Noriaki Hino
To reduce the size of a rotating gantry for a particle therapy system, it is desirable to reduce the size of the scanning system by substituting separated scanning magnets with a combined-function scanning magnet. A two-dimensionally designed scanning magnet with distributed winding coils (DW-SCM) i…
[Phys. Rev. Accel. Beams 25, 122402] Published Wed Dec 14, 2022
Keywords: Magnet Calculations and Technology
Citation: Phys. Rev. Accel. Beams 25, 122402 (2022)
PubDate: 2022-12-14T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.122402
Issue No: Vol. 25, No. 12 (2022)
- Optimization method to compensate accelerator performance drifts
Authors: Zhe Zhang; Minghao Song, Xiaobiao Huang
First page: 122801
Abstract: Author(s): Zhe Zhang, Minghao Song, and Xiaobiao Huang
Accelerator performance often deteriorates with time during a long period of operation due to secular changes in the machine components or the surrounding environment. In many cases, some tuning knobs are effective in compensating the performance drifts and optimization methods can be used to find t…
[Phys. Rev. Accel. Beams 25, 122801] Published Thu Dec 08, 2022
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 25, 122801 (2022)
PubDate: 2022-12-08T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.122801
Issue No: Vol. 25, No. 12 (2022)
- Uncertainty aware anomaly detection to predict errant beam pulses in the
Oak Ridge Spallation Neutron Source accelerator
Authors: Willem Blokland; Kishansingh Rajput, Malachi Schram, Torri Jeske, Pradeep Ramuhalli, Charles Peters, Yigit Yucesan, Alexander Zhukov
First page: 122802
Abstract: Author(s): Willem Blokland, Kishansingh Rajput, Malachi Schram, Torri Jeske, Pradeep Ramuhalli, Charles Peters, Yigit Yucesan, and Alexander Zhukov
High-power particle accelerators are complex machines with thousands of pieces of equipment that are frequently running at the cutting edge of technology. In order to improve the day-to-day operations and maximize the delivery of the science, new analytical techniques are being explored for anomaly …
[Phys. Rev. Accel. Beams 25, 122802] Published Thu Dec 15, 2022
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 25, 122802 (2022)
PubDate: 2022-12-15T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.122802
Issue No: Vol. 25, No. 12 (2022)
- Transverse phase space tomography in an accelerator test facility using
image compression and machine learning
Authors: A. Wolski; M. A. Johnson, M. King, B. L. Militsyn, P. H. Williams
First page: 122803
Abstract: Author(s): A. Wolski, M. A. Johnson, M. King, B. L. Militsyn, and P. H. Williams
We describe a novel technique, based on image compression and machine learning, for transverse phase space tomography in two degrees of freedom in an accelerator beamline. The technique has been used in the CLARA accelerator test facility at Daresbury Laboratory: results from the machine learning me…
[Phys. Rev. Accel. Beams 25, 122803] Published Thu Dec 15, 2022
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 25, 122803 (2022)
PubDate: 2022-12-15T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.122803
Issue No: Vol. 25, No. 12 (2022)
- Beam-based rf station fault identification at the SLAC Linac Coherent
Light Source
Authors: Ryan Humble; Finn H. O’Shea, William Colocho, Matt Gibbs, Helen Chaffee, Eric Darve, Daniel Ratner
First page: 122804
Abstract: Author(s): Ryan Humble, Finn H. O’Shea, William Colocho, Matt Gibbs, Helen Chaffee, Eric Darve, and Daniel Ratner
Accelerators produce too many signals for a small operations team to monitor in real time. In addition, many of these signals are only interpretable by subject matter experts with years of experience. As a result, changes in accelerator performance can require time-intensive consultations with exper…
[Phys. Rev. Accel. Beams 25, 122804] Published Fri Dec 16, 2022
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 25, 122804 (2022)
PubDate: 2022-12-16T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.122804
Issue No: Vol. 25, No. 12 (2022)
- Paraxial forward-scatter field analysis for a THz pulse traveling down a
highly overmoded iris-line waveguide
Authors: Adham Naji; Gennady Stupakov
First page: 123501
Abstract: Author(s): Adham Naji and Gennady Stupakov
Highly overmoded iris-line structures carry desirable features for the efficient transportation of THz radiation over long distances. Previous studies have analyzed the iris line, modeled approximately as a long open-resonator structure with thin screens, using methods such as Vainstein’s impedance …
[Phys. Rev. Accel. Beams 25, 123501] Published Thu Dec 08, 2022
Keywords: Other Accelerator Subsystems and Technologies
Citation: Phys. Rev. Accel. Beams 25, 123501 (2022)
PubDate: 2022-12-08T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.123501
Issue No: Vol. 25, No. 12 (2022)
- Multivariant spatial and geometric interpolation of field maps through
model order reduction
Authors: X. Du; L. Groening
First page: 124601
Abstract: Author(s): X. Du and L. Groening
Complex three-dimensional field maps can be efficiently denoised and compressed in data volume by high order single value decomposition. Extension of the method to inter/extrapolation and determination of basis function representation is reported here. Inter/extrapolation of denoised and compressed …
[Phys. Rev. Accel. Beams 25, 124601] Published Wed Dec 07, 2022
Keywords: Computing, Machine Learning, and Algorithms
Citation: Phys. Rev. Accel. Beams 25, 124601 (2022)
PubDate: 2022-12-07T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.124601
Issue No: Vol. 25, No. 12 (2022)
- Erratum: Reply to “Comment on ‘Fast-slow mode coupling instability for
coasting beams in the presence of detuning impedance’” [Phys. Rev.
Accel. Beams 24, 078002 (2021)]
Authors: N. Biancacci; E. Métral, M. Migliorati
First page: 129901
Abstract: Author(s): N. Biancacci, E. Métral, and M. Migliorati
[Phys. Rev. Accel. Beams 25, 129901] Published Tue Dec 20, 2022
Citation: Phys. Rev. Accel. Beams 25, 129901 (2022)
PubDate: 2022-12-20T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.129901
Issue No: Vol. 25, No. 12 (2022)
- Announcement: Introducing “Machine Learning” in the Table of Contents
of Physical Review Accelerators and Beams
First page: 110001
Abstract: [Phys. Rev. Accel. Beams 25, 110001] Published Tue Nov 01, 2022
Citation: Phys. Rev. Accel. Beams 25, 110001 (2022)
PubDate: 2022-11-01T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.110001
Issue No: Vol. 25, No. 11 (2022)
- High-power test of an interdigital $H$-mode drift tube linac for the
J-PARC muon $g−2$ and electric dipole moment experiment
Authors: Y. Nakazawa; E. Cicek, K. Futatsukawa, Y. Fuwa, N. Hayashizaki, T. Iijima, H. Iinuma, Y. Iwata, Y. Kondo, T. Mibe, S. Mizobata, T. Morishita, M. Otani, Y. Sue, Y. Takeuchi, J. Tojo
First page: 110101
Abstract: Author(s): Y. Nakazawa, E. Cicek, K. Futatsukawa, Y. Fuwa, N. Hayashizaki, T. Iijima, H. Iinuma, Y. Iwata, Y. Kondo, T. Mibe, S. Mizobata, T. Morishita, M. Otani, Y. Sue, Y. Takeuchi, and J. Tojo
We conducted a high-power test of a prototype cavity of a 324-MHz interdigital H-mode drift tube linac (IH-DTL) for the precise measurement of the muon anomalous magnetic moment ($g−2$) and electric dipole moment (EDM). This prototype cavity (short IH) was developed to verify the fabrication methodo…
[Phys. Rev. Accel. Beams 25, 110101] Published Mon Nov 07, 2022
Keywords: Low- and Intermediate-Energy Accelerators
Citation: Phys. Rev. Accel. Beams 25, 110101 (2022)
PubDate: 2022-11-07T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.110101
Issue No: Vol. 25, No. 11 (2022)
- Generation of coherent THz Cherenkov radiation by electron bunch tilt
control
Authors: Yuichi Tadenuma; Kazuyuki Sakaue, Tomohiro Toida, Mariko Nishida, Mari Brameld, Tatsuki Murakami, Ryo Yanagisawa, Masakazu Washio, Ryunosuke Kuroda
First page: 110102
Abstract: Author(s): Yuichi Tadenuma, Kazuyuki Sakaue, Tomohiro Toida, Mariko Nishida, Mari Brameld, Tatsuki Murakami, Ryo Yanagisawa, Masakazu Washio, and Ryunosuke Kuroda
We propose a new method that generates coherent Cherenkov radiation by controlling the tilt of the electron bunch. In this scheme, the wavelength band of coherent radiation depends on the transverse size of the electron bunch. This study demonstrates a coherent Cherenkov radiation (CChR) pulse in th…
[Phys. Rev. Accel. Beams 25, 110102] Published Tue Nov 22, 2022
Keywords: Low- and Intermediate-Energy Accelerators
Citation: Phys. Rev. Accel. Beams 25, 110102 (2022)
PubDate: 2022-11-22T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.110102
Issue No: Vol. 25, No. 11 (2022)
- Performance of the correlated painting based on the mechanical structure
of the anticorrelated painting scheme
Authors: Ming-Yang Huang; Yoshiro Irie, Shou-Yan Xu, Xin Qi, Sheng Wang
First page: 110401
Abstract: Author(s): Ming-Yang Huang, Yoshiro Irie, Shou-Yan Xu, Xin Qi, and Sheng Wang
The China Spallation Neutron Source (CSNS) accelerator consists of an 80 MeV ${H}^{−}$ Linac and a 1.6-GeV rapid cycling synchrotron (RCS). The painting scheme is one of the most important factors for the control of low beam loss at high beam power. In the painting injection of the CSNS/RCS, positio…
[Phys. Rev. Accel. Beams 25, 110401] Published Mon Nov 21, 2022
Keywords: Pulsed-Power Accelerators, Technology, and Dynamics
Citation: Phys. Rev. Accel. Beams 25, 110401 (2022)
PubDate: 2022-11-21T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.110401
Issue No: Vol. 25, No. 11 (2022)
- Lattice correction and commissioning simulation of the Advanced Light
Source upgrade storage ring
Authors: Thorsten Hellert; Christoph Steier, Marco Venturini
First page: 110701
Abstract: Author(s): Thorsten Hellert, Christoph Steier, and Marco Venturini
The ALS-U is the upgrade of the existing Lawrence Berkeley National Laboratory Advanced Light Source to a diffraction-limited soft x-ray light source. Here we present the lattice correction studies and commissioning simulations demonstrating that the proposed machine design can be expected to delive…
[Phys. Rev. Accel. Beams 25, 110701] Published Tue Nov 15, 2022
Keywords: Synchrotron Radiation and Free-Electron Lasers
Citation: Phys. Rev. Accel. Beams 25, 110701 (2022)
PubDate: 2022-11-15T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.110701
Issue No: Vol. 25, No. 11 (2022)
- Analyzing the filamentation of MeV-range proton bunches in a laser-driven
ion beamline and optimizing their peak intensity
Authors: M. Metternich; H. Nazary, D. Schumacher, C. Brabetz, F. Kroll, F.-E. Brack, M. Ehret, A. Blažević, U. Schramm, V. Bagnoud, M. Roth
First page: 111301
Abstract: Author(s): M. Metternich, H. Nazary, D. Schumacher, C. Brabetz, F. Kroll, F.-E. Brack, M. Ehret, A. Blažević, U. Schramm, V. Bagnoud, and M. Roth
In this article, we report on the latest investigations and achievements in proton beam shaping with our laser-driven ion beamline at GSI Helmholtzzentrum für Schwerionenforschung GmbH. This beamline was realized within the framework of the Laser Ion Generation, Handling, and Transport (LIGHT) colla…
[Phys. Rev. Accel. Beams 25, 111301] Published Thu Nov 03, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 111301 (2022)
PubDate: 2022-11-03T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.111301
Issue No: Vol. 25, No. 11 (2022)
- All-metal wakefield accelerator: Two-dimensional periodic surface lattices
for charged particle acceleration
Authors: I. V. Konoplev
First page: 111302
Abstract: Author(s): I. V. Konoplev
Interest in “all-metal” surface periodic structures to control charged particle beam dynamics and properties, and to generate coherent radiation in the THz frequency range has recently risen exponentially. While such structures have the benefits of metal, they are capable of providing similar proper…
[Phys. Rev. Accel. Beams 25, 111302] Published Tue Nov 22, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 111302 (2022)
PubDate: 2022-11-22T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.111302
Issue No: Vol. 25, No. 11 (2022)
- Ka-band linearizer structure studies for a compact light source
Authors: A. Castilla; R. Apsimon, G. Burt, X. Wu, A. Latina, X. Liu, I. Syratchev, W. Wuensch, B. Spataro, A. W. Cross
First page: 112001
Abstract: Author(s): A. Castilla, R. Apsimon, G. Burt, X. Wu, A. Latina, X. Liu, I. Syratchev, W. Wuensch, B. Spataro, and A. W. Cross
The CompactLight design for a next-generation x-ray free-electron laser utilizes a C-band injector. This requires that the harmonic system used to linearize the beam’s phase space must operate at X-band rf or higher. We investigate the optimum frequency for the harmonic system in the range of freque…
[Phys. Rev. Accel. Beams 25, 112001] Published Wed Nov 09, 2022
Keywords: Radio Frequency Calculations and Technology
Citation: Phys. Rev. Accel. Beams 25, 112001 (2022)
PubDate: 2022-11-09T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.112001
Issue No: Vol. 25, No. 11 (2022)
- Suppression of eddy-current effects in beam injection using a pulsed
sextupole magnet with a new ceramic chamber
Authors: Chikaori Mitsuda; Hiroyuki Takaki, Ryota Takai, Takashi Nogami, Takashi Uchiyama, Yukinori Kobayashi, Takashi Obina, Yao Lu, Atsushi Yokoyama
First page: 112401
Abstract: Author(s): Chikaori Mitsuda, Hiroyuki Takaki, Ryota Takai, Takashi Nogami, Takashi Uchiyama, Yukinori Kobayashi, Takashi Obina, Yao Lu, and Atsushi Yokoyama
At the Photon Factory storage ring (PF ring) of the High Energy Accelerator Research Organization (KEK), a pulsed sextupole magnet (PSM) has been used for top-up injection for the first time. Following its successful operation at the KEK, this new injection scheme was expanded to one with a nonlinea…
[Phys. Rev. Accel. Beams 25, 112401] Published Tue Nov 29, 2022
Keywords: Magnet Calculations and Technology
Citation: Phys. Rev. Accel. Beams 25, 112401 (2022)
PubDate: 2022-11-29T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.112401
Issue No: Vol. 25, No. 11 (2022)
- Manufacturing studies and rf test results of the 1.3 GHz fundamental
power coupler prototypes
Authors: Zhen-Yu Ma et al.
First page: 113501
Abstract: Author(s): Zhen-Yu Ma et al.
The superconducting radiofrequency electron linear accelerator of the Shanghai HIgh repetition rate XFEL aNd Extreme light facility (SHINE) will use 600 TESLA-style cavities with 1.3 GHz fundamental power couplers for continuous-wave operation. The first batch of 26 1.3 GHz coupler prototypes has be…
[Phys. Rev. Accel. Beams 25, 113501] Published Tue Nov 15, 2022
Keywords: Other Accelerator Subsystems and Technologies
Citation: Phys. Rev. Accel. Beams 25, 113501 (2022)
PubDate: 2022-11-15T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.113501
Issue No: Vol. 25, No. 11 (2022)
- Editorial: A Welcoming Home for Applied Science
Authors: Jessica Thomas; Michael Thoennessen
First page: 100001
Abstract: Author(s): Jessica Thomas and Michael Thoennessen
[Phys. Rev. Accel. Beams 25, 100001] Published Tue Oct 11, 2022
Citation: Phys. Rev. Accel. Beams 25, 100001 (2022)
PubDate: 2022-10-11T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.100001
Issue No: Vol. 25, No. 10 (2022)
- Charging mechanisms and orbital dynamics of charged dust grains in the LHC
Authors: P. Bélanger; R. Baartman, G. Iadarola, A. Lechner, B. Lindstrom, R. Schmidt, D. Wollmann
First page: 101001
Abstract: Author(s): P. Bélanger, R. Baartman, G. Iadarola, A. Lechner, B. Lindstrom, R. Schmidt, and D. Wollmann
Dust grains interacting with the beam of particle accelerators are believed to be the cause of several detrimental effects such as beam losses, emittance growth, pressure bursts, and even quenches of superconducting magnets. Experimental observations suggest that these grains are positively charged …
[Phys. Rev. Accel. Beams 25, 101001] Published Thu Oct 13, 2022
Keywords: High-Energy Accelerators and Colliders
Citation: Phys. Rev. Accel. Beams 25, 101001 (2022)
PubDate: 2022-10-13T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.101001
Issue No: Vol. 25, No. 10 (2022)
- Aperture measurements with ac dipoles and movable collimators in the Large
Hadron Collider
Authors: N. Fuster-Martínez; R. Bruce, M. Hofer, T. Persson, S. Redaelli, R. Tomás
First page: 101002
Abstract: Author(s): N. Fuster-Martínez, R. Bruce, M. Hofer, T. Persson, S. Redaelli, and R. Tomás
This paper presents a first experimental demonstration of a new nondestructive method for aperture measurements based on ac dipoles. In high intensity particle colliders, such as the CERN Large Hadron Collider (LHC), aperture measurements are crucial for a safe operation while optimizing the optics …
[Phys. Rev. Accel. Beams 25, 101002] Published Wed Oct 19, 2022
Keywords: High-Energy Accelerators and Colliders
Citation: Phys. Rev. Accel. Beams 25, 101002 (2022)
PubDate: 2022-10-19T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.101002
Issue No: Vol. 25, No. 10 (2022)
- Mechanisms to control laser-plasma coupling in laser wakefield electron
acceleration
Authors: L. T. Dickson; C. I. D. Underwood, F. Filippi, R. J. Shalloo, J. Björklund Svensson, D. Guénot, K. Svendsen, I. Moulanier, S. Dobosz Dufrénoy, C. D. Murphy, N. C. Lopes, P. P. Rajeev, Z. Najmudin, G. Cantono, A. Persson, O. Lundh, G. Maynard, M. J. V. Streeter, B. Cros
First page: 101301
Abstract: Author(s): L. T. Dickson, C. I. D. Underwood, F. Filippi, R. J. Shalloo, J. Björklund Svensson, D. Guénot, K. Svendsen, I. Moulanier, S. Dobosz Dufrénoy, C. D. Murphy, N. C. Lopes, P. P. Rajeev, Z. Najmudin, G. Cantono, A. Persson, O. Lundh, G. Maynard, M. J. V. Streeter, and B. Cros
Experimental results, supported by precise modeling, demonstrate optimization of a plasma-based injector with intermediate laser pulse energy ($<1\text{ }\text{ }\mathrm{J}$), corresponding to a normalized vector potential ${a}_{0}=2.15$, using ionization injection in a tailored plasma density pr…
[Phys. Rev. Accel. Beams 25, 101301] Published Wed Oct 12, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 101301 (2022)
PubDate: 2022-10-12T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.101301
Issue No: Vol. 25, No. 10 (2022)
- Characterization of laser wakefield acceleration efficiency with octave
spanning near-IR spectrum measurements
Authors: M. J. V. Streeter et al.
First page: 101302
Abstract: Author(s): M. J. V. Streeter et al.
We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser to the plasma wakefield and from the plasma to the accelerated electron beam was diagnosed by simultaneous measurement of the deceleration of …
[Phys. Rev. Accel. Beams 25, 101302] Published Mon Oct 31, 2022
Keywords: New Acceleration Techniques
Citation: Phys. Rev. Accel. Beams 25, 101302 (2022)
PubDate: 2022-10-31T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.101302
Issue No: Vol. 25, No. 10 (2022)
- Design of the optical system for the gamma factory proof of principle
experiment at the CERN Super Proton Synchrotron
Authors: Aurélien Martens; Kevin Cassou, Ronic Chiche, Kevin Dupraz, Daniele Nutarelli, Yann Peinaud, Fabian Zomer, Yann Dutheil, Brennan Goddard, Mieczyslaw Witold Krasny, Thibaut Lefevre, Francesco Maria Velotti
First page: 101601
Abstract: Author(s): Aurélien Martens, Kevin Cassou, Ronic Chiche, Kevin Dupraz, Daniele Nutarelli, Yann Peinaud, Fabian Zomer, Yann Dutheil, Brennan Goddard, Mieczyslaw Witold Krasny, Thibaut Lefevre, and Francesco Maria Velotti
The Gamma Factory proof of principle experiment aims at colliding laser pulses with ultrarelativistic partially stripped ion beams at the CERN Super Proton Synchrotron. Its goals include the first demonstration of fast cooling of ultrarelativistic ion beams and opening up many possibilities for new …
[Phys. Rev. Accel. Beams 25, 101601] Published Fri Oct 07, 2022
Keywords: Design Studies
Citation: Phys. Rev. Accel. Beams 25, 101601 (2022)
PubDate: 2022-10-07T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.101601
Issue No: Vol. 25, No. 10 (2022)
- Design and operation of transfer lines for plasma wakefield accelerators
using numerical optimizers
Authors: R. Ramjiawan; S. Döbert, J. Farmer, E. Gschwendtner, F. M. Velotti, L. Verra, G. Zevi Della Porta, V. Bencini, P. N. Burrows
First page: 101602
Abstract: Author(s): R. Ramjiawan, S. Döbert, J. Farmer, E. Gschwendtner, F. M. Velotti, L. Verra, G. Zevi Della Porta, V. Bencini, and P. N. Burrows
The Advanced Wakefield (AWAKE) Experiment is a proof-of-principle experiment demonstrating the acceleration of electron beams via proton-driven plasma wakefield acceleration. AWAKE Run 2 aims to build on the results of Run 1 by achieving higher energies with an improved beam quality. As part of the …
[Phys. Rev. Accel. Beams 25, 101602] Published Thu Oct 13, 2022
Keywords: Design Studies
Citation: Phys. Rev. Accel. Beams 25, 101602 (2022)
PubDate: 2022-10-13T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.101602
Issue No: Vol. 25, No. 10 (2022)
- Plasma cleaning of the SLAC Linac Coherent Light Source II high energy
verification cryomodule cavities
Authors: B. Giaccone; P. Berrutti, M. Martinello, S. Posen, A. Cravatta, A. Netepenko, T. Arkan, A. Grassellino, B. Hartsell, J. Kaluzny, A. Penhollow, D. Gonnella, M. Ross, J. Fuerst, G. Hays, J. T. Maniscalco, M. Doleans
First page: 102001
Abstract: Author(s): B. Giaccone, P. Berrutti, M. Martinello, S. Posen, A. Cravatta, A. Netepenko, T. Arkan, A. Grassellino, B. Hartsell, J. Kaluzny, A. Penhollow, D. Gonnella, M. Ross, J. Fuerst, G. Hays, J. T. Maniscalco, and M. Doleans
Plasma cleaning is a technique that can be applied in superconducting radio-frequency cavities in situ in cryomodules to decrease their level of field emission (FE). We developed the technique for Linac Coherent Light Source II (LCLS-II) cavities and we present in this paper the full development and…
[Phys. Rev. Accel. Beams 25, 102001] Published Wed Oct 12, 2022
Keywords: Radio Frequency Calculations and Technology
Citation: Phys. Rev. Accel. Beams 25, 102001 (2022)
PubDate: 2022-10-12T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.102001
Issue No: Vol. 25, No. 10 (2022)
- Stability analysis of rf accelerating mode with feedback loops under heavy
beam loading in SuperKEKB
Authors: Kazunori Akai
First page: 102002
Abstract: Author(s): Kazunori Akai
In SuperKEKB high-current beam operation, achieving the stability of the zero mode associated with the accelerating mode of the rf system is an important concern because of heavy beam loading. The issue is a more serious problem in the high-energy ring (HER) compared to the low-energy ring (LER) bec…
[Phys. Rev. Accel. Beams 25, 102002] Published Fri Oct 14, 2022
Keywords: Radio Frequency Calculations and Technology
Citation: Phys. Rev. Accel. Beams 25, 102002 (2022)
PubDate: 2022-10-14T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.102002
Issue No: Vol. 25, No. 10 (2022)
- Noninvasive beam-size measurements for linear induction accelerators
Authors: C. Ekdahl; H. V. Smith, W. B. Broste, H. A. Bender, N. D. Kallas, K. McCurdy, D. C. Moir, M. Sanchez, G. P. Salazar, W. C. Ogg
First page: 102801
Abstract: Author(s): C. Ekdahl, H. V. Smith, W. B. Broste, H. A. Bender, N. D. Kallas, K. McCurdy, D. C. Moir, M. Sanchez, G. P. Salazar, and W. C. Ogg
Diamagnetic loops (DML) can be used as a noninvasive method for the measurement of beam size in electron beam accelerators that use solenoidal magnetic transport. The loop fundamentally measures the magnetic flux excluded by a diamagnetic object. A comprehensive theory relates the rms beam radius to…
[Phys. Rev. Accel. Beams 25, 102801] Published Thu Oct 06, 2022
Keywords: Beam Control, Diagnostics, and Feedback
Citation: Phys. Rev. Accel. Beams 25, 102801 (2022)
PubDate: 2022-10-06T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.102801
Issue No: Vol. 25, No. 10 (2022)
- Picosecond timing planes for future collider detectors
Authors: P. W. Gorham; C. Campos, C. Hast, K. Jobe, C. Miki, L. Nguyen, M. Olmedo, R. Prechelt, C. Sonoda, G. S. Varner
First page: 102901
Abstract: Author(s): P. W. Gorham, C. Campos, C. Hast, K. Jobe, C. Miki, L. Nguyen, M. Olmedo, R. Prechelt, C. Sonoda, and G. S. Varner
We report experimental test-beam results on dielectric-loaded waveguide detectors that utilize microwave Cherenkov signals to time and characterize high energy particle showers. These results are used to validate models and produce high-fidelity simulations of timing plane systems that yield picosec…
[Phys. Rev. Accel. Beams 25, 102901] Published Mon Oct 10, 2022
Keywords: Particle and Radiation Detectors
Citation: Phys. Rev. Accel. Beams 25, 102901 (2022)
PubDate: 2022-10-10T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.102901
Issue No: Vol. 25, No. 10 (2022)
- Design development and implementation of an irradiation station at the
neutron time-of-flight facility at CERN
Authors: M. Ferrari; D. Senajova, O. Aberle, Y. Q. Aguiar, D. Baillard, M. Barbagallo, A.-P. Bernardes, L. Buonocore, M. Cecchetto, V. Clerc, M. Di Castro, R. Garcia Alia, S. Girod, J.-L. Grenard, K. Kershaw, G. Lerner, M. M. Maeder, A. Makovec, A. Mengoni, M. Perez Ornedo, F. Pozzi, C. V. Almagro, M. Calviani (for the n_TOF Collaboration)
First page: 103001
Abstract: Author(s): M. Ferrari, D. Senajova, O. Aberle, Y. Q. Aguiar, D. Baillard, M. Barbagallo, A.-P. Bernardes, L. Buonocore, M. Cecchetto, V. Clerc, M. Di Castro, R. Garcia Alia, S. Girod, J.-L. Grenard, K. Kershaw, G. Lerner, M. M. Maeder, A. Makovec, A. Mengoni, M. Perez Ornedo, F. Pozzi, C. V. Almagro, and M. Calviani (for the n_TOF Collaboration)
CERN’s “irradiation station” will investigate the effect of radiation on commercial materials, such as lubricants and gaskets, that are used regularly in accelerator beamlines and other radiation environments.
[Phys. Rev. Accel. Beams 25, 103001] Published Thu Oct 20, 2022
Keywords: Targets, Collimators, and Beam Dumps
Citation: Phys. Rev. Accel. Beams 25, 103001 (2022)
PubDate: 2022-10-20T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.103001
Issue No: Vol. 25, No. 10 (2022)
- Analysis of photoinjector transverse phase space in action and phase
coordinates
Authors: Houjun Qian; Mikhail Krasilnikov, Zakaria Aboulbanine, Gowri Adhikari, Namra Aftab, Prach Boonpornpras, Georgi Georgiev, James Good, Matthias Gross, Christian Koschitzki, Xiangkun Li, Osip Lishilin, Anusorn Lueangaramwong, Raffael Niemczyk, Anne Oppelt, Guan Shu, Frank Stephan, Grygorii Vashchenko, Tobias Weilbach
First page: 103401
Abstract: Author(s): Houjun Qian, Mikhail Krasilnikov, Zakaria Aboulbanine, Gowri Adhikari, Namra Aftab, Prach Boonpornpras, Georgi Georgiev, James Good, Matthias Gross, Christian Koschitzki, Xiangkun Li, Osip Lishilin, Anusorn Lueangaramwong, Raffael Niemczyk, Anne Oppelt, Guan Shu, Frank Stephan, Grygorii Vashchenko, and Tobias Weilbach
Photoinjectors are the main high brightness electron sources for x-ray free electron lasers (XFELs). Photoinjector emittance reduction is one of the key knobs for improving XFEL lasing, so precise emittance measurement is critical. It is well known that rms emittance is very sensitive to low intensi…
[Phys. Rev. Accel. Beams 25, 103401] Published Thu Oct 27, 2022
Keywords: Particle-Beam Sources
Citation: Phys. Rev. Accel. Beams 25, 103401 (2022)
PubDate: 2022-10-27T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.103401
Issue No: Vol. 25, No. 10 (2022)
- Simulation and optimization of a miniaturized ion source for a neutron
tube
Authors: Ailin Zhang; Dong Li, Lechen Xu, Zijian Xiong, Junyi Zhang, Haiping Peng, Qing Luo
First page: 103501
Abstract: Author(s): Ailin Zhang, Dong Li, Lechen Xu, Zijian Xiong, Junyi Zhang, Haiping Peng, and Qing Luo
A miniaturized Penning ion source, capable of generating a milliampere ${\mathrm{H}}^{+}$ beam with low anode power supply and low gas consumption, was produced and tested for neutron tubes. For a better understanding and optimization of the Penning ion source, magnetic field, beam extraction system…
[Phys. Rev. Accel. Beams 25, 103501] Published Mon Oct 17, 2022
Keywords: Other Accelerator Subsystems and Technologies
Citation: Phys. Rev. Accel. Beams 25, 103501 (2022)
PubDate: 2022-10-17T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.103501
Issue No: Vol. 25, No. 10 (2022)
- Hamiltonian theory of the crossing of the $2{Q}_{x}−2{Q}_{y}=0$
nonlinear coupling resonance
Authors: A. Bazzani; F. Capoani, M. Giovannozzi
First page: 104001
Abstract: Author(s): A. Bazzani, F. Capoani, and M. Giovannozzi
In a recent paper, the adiabatic theory of Hamiltonian systems was successfully applied to study the crossing of the linear coupling resonance, ${Q}_{x}−{Q}_{y}=0$. A detailed explanation of the well-known phenomena that occur during the resonance-crossing process, such as emittance exchange and its…
[Phys. Rev. Accel. Beams 25, 104001] Published Mon Oct 24, 2022
Keywords: Single-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 25, 104001 (2022)
PubDate: 2022-10-24T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.104001
Issue No: Vol. 25, No. 10 (2022)
- Energy spread blowup by intrabeam scattering and microbunching at the
SwissFEL injector
Authors: Eduard Prat; Paolo Craievich, Philipp Dijkstal, Simone Di Mitri, Eugenio Ferrari, Thomas G. Lucas, Alexander Malyzhenkov, Giovanni Perosa, Sven Reiche, Thomas Schietinger
First page: 104401
Abstract: Author(s): Eduard Prat, Paolo Craievich, Philipp Dijkstal, Simone Di Mitri, Eugenio Ferrari, Thomas G. Lucas, Alexander Malyzhenkov, Giovanni Perosa, Sven Reiche, and Thomas Schietinger
We present high-resolution measurements of the electron beam energy spread at the SwissFEL injector as a function of the electron bunch charge, the optics, and the longitudinal dispersion of the lattice. The measured values are in general an order of magnitude higher than what is predicted by standa…
[Phys. Rev. Accel. Beams 25, 104401] Published Tue Oct 04, 2022
Keywords: Relativistic, Multiple-Particle Dynamics
Citation: Phys. Rev. Accel. Beams 25, 104401 (2022)
PubDate: 2022-10-04T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.104401
Issue No: Vol. 25, No. 10 (2022)
- Explainable machine learning for breakdown prediction in high gradient rf
cavities
Authors: Christoph Obermair; Thomas Cartier-Michaud, Andrea Apollonio, William Millar, Lukas Felsberger, Lorenz Fischl, Holger Severin Bovbjerg, Daniel Wollmann, Walter Wuensch, Nuria Catalan-Lasheras, Marçà Boronat, Franz Pernkopf, Graeme Burt
First page: 104601
Abstract: Author(s): Christoph Obermair, Thomas Cartier-Michaud, Andrea Apollonio, William Millar, Lukas Felsberger, Lorenz Fischl, Holger Severin Bovbjerg, Daniel Wollmann, Walter Wuensch, Nuria Catalan-Lasheras, Marçà Boronat, Franz Pernkopf, and Graeme Burt
The occurrence of vacuum arcs or radio frequency (rf) breakdowns is one of the most prevalent factors limiting the high-gradient performance of normal conducting rf cavities in particle accelerators. In this paper, we search for the existence of previously unrecognized features related to the incide…
[Phys. Rev. Accel. Beams 25, 104601] Published Tue Oct 04, 2022
Keywords: Computing and Algorithms
Citation: Phys. Rev. Accel. Beams 25, 104601 (2022)
PubDate: 2022-10-04T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.104601
Issue No: Vol. 25, No. 10 (2022)
- rf cavity point-charge wakefield computation through a hybrid analytical
and numerical approach
Authors: L. Shi; Boris Podobedov
First page: 104602
Abstract: Author(s): L. Shi and Boris Podobedov
We study short-range geometric wakefields of a normal conducting third harmonic cavity, developed by ALBA, which is currently under investigation for the BESSY II main storage ring upgrade. As is commonly done to enhance the shunt impedance, the single cell cavity shape includes smooth nose-cone tra…
[Phys. Rev. Accel. Beams 25, 104602] Published Thu Oct 13, 2022
Keywords: Computing and Algorithms
Citation: Phys. Rev. Accel. Beams 25, 104602 (2022)
PubDate: 2022-10-13T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.104602
Issue No: Vol. 25, No. 10 (2022)
- Accelerated three-dimensional quasistatic particle-in-cell code
Authors: Tianhong Wang; Vladimir Khudik, Jihoon Kim, Gennady Shvets
First page: 104603
Abstract: Author(s): Tianhong Wang, Vladimir Khudik, Jihoon Kim, and Gennady Shvets
A new three-dimensional quasistatic particle-in-cell code for laser wakefield and plasma wakefield accelerators.
[Phys. Rev. Accel. Beams 25, 104603] Published Mon Oct 24, 2022
Keywords: Computing and Algorithms
Citation: Phys. Rev. Accel. Beams 25, 104603 (2022)
PubDate: 2022-10-24T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.104603
Issue No: Vol. 25, No. 10 (2022)
- Optimizing a superconducting radio-frequency gun using deep reinforcement
learning
Authors: David Meier; Luis Vera Ramirez, Jens Völker, Jens Viefhaus, Bernhard Sick, Gregor Hartmann
First page: 104604
Abstract: Author(s): David Meier, Luis Vera Ramirez, Jens Völker, Jens Viefhaus, Bernhard Sick, and Gregor Hartmann
Superconducting photoelectron injectors are promising for generating highly brilliant pulsed electron beams with high repetition rates and low emittances. Experiments such as ultrafast electron diffraction, experiments at the Terahertz scale, and energy recovery linac applications require such prope…
[Phys. Rev. Accel. Beams 25, 104604] Published Fri Oct 28, 2022
Keywords: Computing and Algorithms
Citation: Phys. Rev. Accel. Beams 25, 104604 (2022)
PubDate: 2022-10-28T10:00:00+00:00
DOI: 10.1103/PhysRevAccelBeams.25.104604
Issue No: Vol. 25, No. 10 (2022)
