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Fast readout algorithm for cylindrical beam position monitors providing good accuracy for particle bunches with large offsets

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.5021607· OSTI ID:1431277
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Collider Accelerator Department
  2. Cornell Univ., Ithaca, NY (United States). CLASSE
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Here, a simple, analytically correct algorithm is developed for calculating “pencil” relativistic beam coordinates using the signals from an ideal cylindrical particle beam position monitor (BPM) with four pickup electrodes (PUEs) of infinitesimal widths. The algorithm is then applied to simulations of realistic BPMs with finite width PUEs. Surprisingly small deviations are found. Simple empirically determined correction terms reduce the deviations even further. The algorithm is then tested with simulations for non-relativistic beams. As an example of the data acquisition speed advantage, a FPGA-based BPM readout implementation of the new algorithm has been developed and characterized. Lastly, the algorithm is tested with BPM data from the Cornell Preinjector.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Grant/Contract Number:
AC02-98CH10886; SC0012704
OSTI ID:
1431277
Alternate ID(s):
OSTI ID: 1434557
OSTI ID: 1436278
Report Number(s):
BNL--203422-2018-JAAM
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 4 Vol. 89; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (6)

Beam position monitoring conference January 1990
Beam position monitoring
  • Shafer, Robert E.
  • The Physics of Particle Accelerators Vol. I (based on the US Particle Accelerator School (USPAS) Seminars and Courses), AIP Conference Proceedings https://doi.org/10.1063/1.41980
conference January 1992
Record high-average current from a high-brightness photoinjector journal January 2013
Demonstration of low emittance in the Cornell energy recovery linac injector prototype journal July 2013
Non-Intercepting Monitor of Beam Current and Position journal January 1971
Demonstration of Low Emittance in the Cornell Energy Recovery Linac Injector Prototype preprint January 2013

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