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

Journal Article · Wed Nov 10 04:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1831136· OSTI ID:20630259

Beche, J -F; Byrd, J; De Santis, S; Denes, P; Placidi, M; Turner, W; Zolotorev, M ^[1]

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1. Lawrence Berkeley National Laboratory, Berkeley, California (United States)

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.

• OSTI ID: 20630259
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 732; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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