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Title: Development of an Abort Gap Monitor for High-Energy Proton Rings

Abstract

The fill pattern in proton synchrotrons usually features an empty gap, longer than the abort kicker raise time, for machine protection. This gap is referred to as the 'abort gap', and any particles, which may accumulate in it due to injection errors and diffusion between RF buckets, would be lost inside the ring, rather than in the beam dump, during the kicker firing. In large proton rings, due to the high energies involved, it is vital to monitor the build up of charges in the abort gap with a high sensitivity. We present a study of an abort gap monitor based on a photomultiplier with a gated microchannel plate, which would allow for detecting low charge densities by monitoring the synchrotron radiation emitted. We show results of beam test experiments at the Advanced Light Source using a Hamamatsu 5916U MCP-PMT and compare them to the specifications for the Large Hadron Collider.

Authors:
; ; ; ; ; ;  [1]
  1. Lawrence Berkeley National Laboratory, Berkeley, California (United States)
Publication Date:
OSTI Identifier:
20630259
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 732; Journal Issue: 1; Conference: 11. beam instrumentation workshop, Knoxville, TN (United States), 3-6 May 2004; Other Information: DOI: 10.1063/1.1831136; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ADVANCED LIGHT SOURCE; BEAM INJECTION; BEAM MONITORS; CERN LHC; CHARGE DENSITY; COMPARATIVE EVALUATIONS; DIAGNOSTIC TECHNIQUES; PHOTOMULTIPLIERS; PHOTON EMISSION; PROTON BEAMS; PROTONS; RADIATION MONITORING; SAFETY; SYNCHROTRON RADIATION

Citation Formats

Beche, J -F, Byrd, J, De Santis, S, Denes, P, Placidi, M, Turner, W, and Zolotorev, M. Development of an Abort Gap Monitor for High-Energy Proton Rings. United States: N. p., 2004. Web. doi:10.1063/1.1831136.
Beche, J -F, Byrd, J, De Santis, S, Denes, P, Placidi, M, Turner, W, & Zolotorev, M. Development of an Abort Gap Monitor for High-Energy Proton Rings. United States. https://doi.org/10.1063/1.1831136
Beche, J -F, Byrd, J, De Santis, S, Denes, P, Placidi, M, Turner, W, and Zolotorev, M. 2004. "Development of an Abort Gap Monitor for High-Energy Proton Rings". United States. https://doi.org/10.1063/1.1831136.
@article{osti_20630259,
title = {Development of an Abort Gap Monitor for High-Energy Proton Rings},
author = {Beche, J -F and Byrd, J and De Santis, S and Denes, P and Placidi, M and Turner, W and Zolotorev, M},
abstractNote = {The fill pattern in proton synchrotrons usually features an empty gap, longer than the abort kicker raise time, for machine protection. This gap is referred to as the 'abort gap', and any particles, which may accumulate in it due to injection errors and diffusion between RF buckets, would be lost inside the ring, rather than in the beam dump, during the kicker firing. In large proton rings, due to the high energies involved, it is vital to monitor the build up of charges in the abort gap with a high sensitivity. We present a study of an abort gap monitor based on a photomultiplier with a gated microchannel plate, which would allow for detecting low charge densities by monitoring the synchrotron radiation emitted. We show results of beam test experiments at the Advanced Light Source using a Hamamatsu 5916U MCP-PMT and compare them to the specifications for the Large Hadron Collider.},
doi = {10.1063/1.1831136},
url = {https://www.osti.gov/biblio/20630259}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 732,
place = {United States},
year = {Wed Nov 10 00:00:00 EST 2004},
month = {Wed Nov 10 00:00:00 EST 2004}
}