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Title: Beam loading compensation for the NLC low frequency linacs

Abstract

The NLC low rf linacs are heavily loaded by a beam of about 130 ns in macropulse length (90 bunches) and a current up to 2.75 Amps. Beam loading voltage generates a large energy spread along the bunch train. This energy spread is critical for lattice design and, if not properly compensated, induces emittance growth and in turn lowers the luminosity of the machine. In this paper, the authors study the {Delta}F and {Delta}T beam loading compensation techniques for the NLC low rf linacs. They will apply these methods to the NLC low rf linacs to demonstrate the efficacy of these methods. Finally, they discuss a hybrid {Delta}T + {Delta}F method to improve the efficiency of beam loading compensation.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Stanford Univ., Stanford Linear Accelerator Center, CA (US)
Sponsoring Org.:
USDOE Office of Energy Research, Washington, DC (US)
OSTI Identifier:
666088
Report Number(s):
SLAC-PUB-7429
ON: DE98059103; TRN: US200305%%1112
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: Supercedes report DE98059103; PBD: Mar 1997; PBD: 1 Mar 1997
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; DESIGN; EFFICIENCY; LINEAR ACCELERATORS; LUMINOSITY

Citation Formats

Li, Z, Miller, R, Farkas, D, Raubenheimer, T, Tang, H, and Yeremian, D. Beam loading compensation for the NLC low frequency linacs. United States: N. p., 1997. Web. doi:10.2172/666088.
Li, Z, Miller, R, Farkas, D, Raubenheimer, T, Tang, H, & Yeremian, D. Beam loading compensation for the NLC low frequency linacs. United States. https://doi.org/10.2172/666088
Li, Z, Miller, R, Farkas, D, Raubenheimer, T, Tang, H, and Yeremian, D. 1997. "Beam loading compensation for the NLC low frequency linacs". United States. https://doi.org/10.2172/666088. https://www.osti.gov/servlets/purl/666088.
@article{osti_666088,
title = {Beam loading compensation for the NLC low frequency linacs},
author = {Li, Z and Miller, R and Farkas, D and Raubenheimer, T and Tang, H and Yeremian, D},
abstractNote = {The NLC low rf linacs are heavily loaded by a beam of about 130 ns in macropulse length (90 bunches) and a current up to 2.75 Amps. Beam loading voltage generates a large energy spread along the bunch train. This energy spread is critical for lattice design and, if not properly compensated, induces emittance growth and in turn lowers the luminosity of the machine. In this paper, the authors study the {Delta}F and {Delta}T beam loading compensation techniques for the NLC low rf linacs. They will apply these methods to the NLC low rf linacs to demonstrate the efficacy of these methods. Finally, they discuss a hybrid {Delta}T + {Delta}F method to improve the efficiency of beam loading compensation.},
doi = {10.2172/666088},
url = {https://www.osti.gov/biblio/666088}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Mar 01 00:00:00 EST 1997},
month = {Sat Mar 01 00:00:00 EST 1997}
}