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Title: Linac automated beam phase control system.

Abstract

Adjustment of the rf phase in a linear accelerator is crucial for maintaining optimal performance. If phasing is incorrect, the beam will in general have an energy error and increased energy spread. While an energy error can be readily detected and corrected using position readings from beam position monitors at dispersion locations, this is not helpful for correcting energy spread in a system with many possible phase errors. Uncorrected energy spread results in poor capture efficiency in downstream accelerators, such as the Advanced Photon Source's (APS's) particle accumulator ring (PAR) or booster synchrotron. To address this issue, APS has implemented beam-to-rf phase detectors in the linac, along with software for automatic correction of phase errors. We discuss the design, implementation, and performance of these detectors and how they improved APS top-up operations.

Authors:
; ; ; ; ;  [1]
  1. (APS)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
973463
Report Number(s):
ANL/ASD/CP-119180
TRN: US1001815
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 2006 Linear Accelerator Conference (LINAC 06); Aug. 21, 2006 - Aug. 25, 2006; Knoxville, TN
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; BEAM POSITION; CONTROL SYSTEMS; DESIGN; EFFICIENCY; IMPLEMENTATION; LINEAR ACCELERATORS; MONITORS; PERFORMANCE; PHOTONS; TANKS

Citation Formats

Pasky, S. J., Lill, R. M., Sereno, N. S., Erwin, L L., Borland, M. D., and Accelerator Systems Division. Linac automated beam phase control system.. United States: N. p., 2006. Web.
Pasky, S. J., Lill, R. M., Sereno, N. S., Erwin, L L., Borland, M. D., & Accelerator Systems Division. Linac automated beam phase control system.. United States.
Pasky, S. J., Lill, R. M., Sereno, N. S., Erwin, L L., Borland, M. D., and Accelerator Systems Division. Sun . "Linac automated beam phase control system.". United States. doi:.
@article{osti_973463,
title = {Linac automated beam phase control system.},
author = {Pasky, S. J. and Lill, R. M. and Sereno, N. S. and Erwin, L L. and Borland, M. D. and Accelerator Systems Division},
abstractNote = {Adjustment of the rf phase in a linear accelerator is crucial for maintaining optimal performance. If phasing is incorrect, the beam will in general have an energy error and increased energy spread. While an energy error can be readily detected and corrected using position readings from beam position monitors at dispersion locations, this is not helpful for correcting energy spread in a system with many possible phase errors. Uncorrected energy spread results in poor capture efficiency in downstream accelerators, such as the Advanced Photon Source's (APS's) particle accumulator ring (PAR) or booster synchrotron. To address this issue, APS has implemented beam-to-rf phase detectors in the linac, along with software for automatic correction of phase errors. We discuss the design, implementation, and performance of these detectors and how they improved APS top-up operations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Conference:
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