Overtaking collision effects in a cw double-pass proton linac
Abstract
The recirculating superconducting proton linac has the advantage of reducing the number of cavities in the accelerator and the corresponding construction and operational costs. Beam dynamics simulations were done recently in a double-pass recirculating proton linac using a single proton beam bunch. For continuous wave (cw) operation, the high-energy proton bunch during the second pass through the linac will overtake and collide with the low-energy bunch during the first pass at a number of locations of the linac. These collisions might cause proton bunch emittance growth and beam quality degradation. Here, we study the collisional effects due to Coulomb space-charge forces between the high-energy bunch and the low-energy bunch. Our results suggest that these effects on the proton beam quality would be small and might not cause significant emittance growth or beam blowup through the linac. A 10 mA, 500 MeV cw double-pass proton linac is feasible without using extra hardware for phase synchronization.
- Authors:
-
- Chinese Academy of Sciences (CAS), Lanzhou (China). Inst. of Modern Physics; Univ. of Chinese Academy of Sciences, Beijing (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); China Scholarship Council
- OSTI Identifier:
- 1414630
- Alternate Identifier(s):
- OSTI ID: 1432236
- Grant/Contract Number:
- AC02-05CH11231; 201604910803
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Accelerators and Beams
- Additional Journal Information:
- Journal Name: Physical Review Accelerators and Beams Journal Volume: 20 Journal Issue: 12; Journal ID: ISSN 2469-9888
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 43 PARTICLE ACCELERATORS; low-energy multiple-particle dynamics
Citation Formats
Tao, Yue, Qiang, Ji, and Hwang, Kilean. Overtaking collision effects in a cw double-pass proton linac. United States: N. p., 2017.
Web. doi:10.1103/PhysRevAccelBeams.20.124202.
Tao, Yue, Qiang, Ji, & Hwang, Kilean. Overtaking collision effects in a cw double-pass proton linac. United States. https://doi.org/10.1103/PhysRevAccelBeams.20.124202
Tao, Yue, Qiang, Ji, and Hwang, Kilean. Fri .
"Overtaking collision effects in a cw double-pass proton linac". United States. https://doi.org/10.1103/PhysRevAccelBeams.20.124202.
@article{osti_1414630,
title = {Overtaking collision effects in a cw double-pass proton linac},
author = {Tao, Yue and Qiang, Ji and Hwang, Kilean},
abstractNote = {The recirculating superconducting proton linac has the advantage of reducing the number of cavities in the accelerator and the corresponding construction and operational costs. Beam dynamics simulations were done recently in a double-pass recirculating proton linac using a single proton beam bunch. For continuous wave (cw) operation, the high-energy proton bunch during the second pass through the linac will overtake and collide with the low-energy bunch during the first pass at a number of locations of the linac. These collisions might cause proton bunch emittance growth and beam quality degradation. Here, we study the collisional effects due to Coulomb space-charge forces between the high-energy bunch and the low-energy bunch. Our results suggest that these effects on the proton beam quality would be small and might not cause significant emittance growth or beam blowup through the linac. A 10 mA, 500 MeV cw double-pass proton linac is feasible without using extra hardware for phase synchronization.},
doi = {10.1103/PhysRevAccelBeams.20.124202},
journal = {Physical Review Accelerators and Beams},
number = 12,
volume = 20,
place = {United States},
year = {Fri Dec 22 00:00:00 EST 2017},
month = {Fri Dec 22 00:00:00 EST 2017}
}
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevAccelBeams.20.124202
https://doi.org/10.1103/PhysRevAccelBeams.20.124202
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 4 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Wide energy bandwidth superconducting accelerating cavities
journal, September 2015
- Qiang, Ji
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 795
Three-dimensional quasistatic model for high brightness beam dynamics simulation
journal, April 2006
- Qiang, Ji; Lidia, Steve; Ryne, Robert D.
- Physical Review Special Topics - Accelerators and Beams, Vol. 9, Issue 4
Physics design of an accelerator for an accelerator-driven subcritical system
journal, August 2013
- Li, Zhihui; Cheng, Peng; Geng, Huiping
- Physical Review Special Topics - Accelerators and Beams, Vol. 16, Issue 8
T HE C ONTINUOUS E LECTRON B EAM A CCELERATOR F ACILITY : CEBAF at the Jefferson Laboratory
journal, December 2001
- Leemann, Christoph W.; Douglas, David R.; Krafft, Geoffrey A.
- Annual Review of Nuclear and Particle Science, Vol. 51, Issue 1
Beam dynamics simulation of a double pass proton linear accelerator
journal, April 2017
- Hwang, Kilean; Qiang, Ji
- Physical Review Accelerators and Beams, Vol. 20, Issue 4
Physics design of a CW high-power proton Linac for accelerator-driven system
journal, January 2012
- Pande, Rajni; Roy, Shweta; Rao, S. V. L. S.
- Pramana, Vol. 78, Issue 2
An Object-Oriented Parallel Particle-in-Cell Code for Beam Dynamics Simulation in Linear Accelerators
journal, September 2000
- Qiang, Ji; Ryne, Robert D.; Habib, Salman
- Journal of Computational Physics, Vol. 163, Issue 2