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Title: Longitudinal beam dynamics with a higher-harmonic cavity for bunch lengthening

Abstract

We discuss here the longitudinal beam dynamics in storage rings in the presence of a higher-harmonic cavity (HHC) system for bunch lengthening. First, we review the general conditions for HHC operations, both in active or passive modes, assuming the stability of the system. For uniform filling patterns, a distinction is made between operations with a normal-conducting HHC, where optimal conditions for bunch lengthening can be satisfied, and operations with a super-conducting HHC, where optimal conditions can be met only approximately. Furthermore, we report on the option to operate the NSLS-II storage ring with a passive, super-conducting third harmonic cavity (3HC) system. The stability and performance of the system in the presence of a gap in the uniform filling, which corresponds to the present mode of operation of the NSLS-II storage ring, is investigated with self-consistent Vlasov–Fokker–Planck simulations performed with the code SPACE.

Authors:
 [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1598492
Report Number(s):
[BNL-213617-2020-JAAM]
[Journal ID: ISSN 0217-751X]
Grant/Contract Number:  
[SC0012704; AC02-98CH10886]
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Modern Physics A
Additional Journal Information:
[ Journal Volume: 34]; Journal ID: ISSN 0217-751X
Publisher:
World Scientific
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Higher-harmonic; cavity; lengthening; Vlasov–Fokker–Planck

Citation Formats

Bassi, Gabriele, and Tagger, Jüri. Longitudinal beam dynamics with a higher-harmonic cavity for bunch lengthening. United States: N. p., 2019. Web. doi:10.1142/S0217751X19420405.
Bassi, Gabriele, & Tagger, Jüri. Longitudinal beam dynamics with a higher-harmonic cavity for bunch lengthening. United States. doi:10.1142/S0217751X19420405.
Bassi, Gabriele, and Tagger, Jüri. Wed . "Longitudinal beam dynamics with a higher-harmonic cavity for bunch lengthening". United States. doi:10.1142/S0217751X19420405.
@article{osti_1598492,
title = {Longitudinal beam dynamics with a higher-harmonic cavity for bunch lengthening},
author = {Bassi, Gabriele and Tagger, Jüri},
abstractNote = {We discuss here the longitudinal beam dynamics in storage rings in the presence of a higher-harmonic cavity (HHC) system for bunch lengthening. First, we review the general conditions for HHC operations, both in active or passive modes, assuming the stability of the system. For uniform filling patterns, a distinction is made between operations with a normal-conducting HHC, where optimal conditions for bunch lengthening can be satisfied, and operations with a super-conducting HHC, where optimal conditions can be met only approximately. Furthermore, we report on the option to operate the NSLS-II storage ring with a passive, super-conducting third harmonic cavity (3HC) system. The stability and performance of the system in the presence of a gap in the uniform filling, which corresponds to the present mode of operation of the NSLS-II storage ring, is investigated with self-consistent Vlasov–Fokker–Planck simulations performed with the code SPACE.},
doi = {10.1142/S0217751X19420405},
journal = {International Journal of Modern Physics A},
number = ,
volume = [34],
place = {United States},
year = {2019},
month = {12}
}

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Works referenced in this record:

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