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Title: Symplectic particle-in-cell model for space-charge beam dynamics simulation

Abstract

Space-charge effects play an important role in high intensity particle accelerators and were studied using a variety of macroparticle tracking models. In this paper, we propose a symplectic particle-in-cell (PIC) model and compare this model with a recently published symplectic gridless particle model and a conventional nonsymplectic PIC model for long-term space-charge simulation of a coasting beam. Using the same step size and the same number of modes for the space-charge Poisson solver, all three models show qualitatively similar emittance growth evolutions and final phase space shapes in the benchmark examples. Quantitatively, the symplectic PIC and the symplectic gridless particle models agree with each other very well, while the nonsymplectic PIC model yields different emittance growth value. Here, using finer step size, the emittance growth from the nonsymplectic PIC converges towards that from the symplectic PIC model.

Authors:
 [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1439365
Alternate Identifier(s):
OSTI ID: 1461155
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Volume: 21; Journal Issue: 5; Related Information: © 2018 authors. Published by the American Physical Society.; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Qiang, Ji. Symplectic particle-in-cell model for space-charge beam dynamics simulation. United States: N. p., 2018. Web. doi:10.1103/PhysRevAccelBeams.21.054201.
Qiang, Ji. Symplectic particle-in-cell model for space-charge beam dynamics simulation. United States. doi:10.1103/PhysRevAccelBeams.21.054201.
Qiang, Ji. Tue . "Symplectic particle-in-cell model for space-charge beam dynamics simulation". United States. doi:10.1103/PhysRevAccelBeams.21.054201.
@article{osti_1439365,
title = {Symplectic particle-in-cell model for space-charge beam dynamics simulation},
author = {Qiang, Ji},
abstractNote = {Space-charge effects play an important role in high intensity particle accelerators and were studied using a variety of macroparticle tracking models. In this paper, we propose a symplectic particle-in-cell (PIC) model and compare this model with a recently published symplectic gridless particle model and a conventional nonsymplectic PIC model for long-term space-charge simulation of a coasting beam. Using the same step size and the same number of modes for the space-charge Poisson solver, all three models show qualitatively similar emittance growth evolutions and final phase space shapes in the benchmark examples. Quantitatively, the symplectic PIC and the symplectic gridless particle models agree with each other very well, while the nonsymplectic PIC model yields different emittance growth value. Here, using finer step size, the emittance growth from the nonsymplectic PIC converges towards that from the symplectic PIC model.},
doi = {10.1103/PhysRevAccelBeams.21.054201},
journal = {Physical Review Accelerators and Beams},
number = 5,
volume = 21,
place = {United States},
year = {Tue May 29 00:00:00 EDT 2018},
month = {Tue May 29 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevAccelBeams.21.054201

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