Distributed beam loss monitor based on the Cherenkov effect in an optical fiber

This review discusses a distributed beam loss monitor which is based on the Cherenkov effect in an optical fiber and which has been installed at the VEPP-5 Injection Complex at the Budker Institute of Nuclear Physics. The principle of the device operation consists in detecting the Cherenkov radiatio...

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Bibliographic Details
Published in:Physics Uspekhi 2015-01, Vol.58 (5), p.516-519
Main Authors: Maltseva, Yu I, Emanov, F A, Petrenko, A V, Prisekin, V G
Format: Article
Language:English
Subjects:
beam loss monitor
Beams (radiation)
charged particle accelerator
Charged particles
Cherenkov radiation
Detectors
Devices
electrons
Monitors
optical fiber
Optical fibers
Particle beams
photomultiplier tube
positrons
Walls
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Summary:This review discusses a distributed beam loss monitor which is based on the Cherenkov effect in an optical fiber and which has been installed at the VEPP-5 Injection Complex at the Budker Institute of Nuclear Physics. The principle of the device operation consists in detecting the Cherenkov radiation generated in an optical fiber by relativistic charged particles that are produced in an electromagnetic shower when highly relativistic beam particles (electrons or positrons) hit the accelerator vacuum chamber wall. Our experiments used a photomultiplier tube (PMT) to detect the Cherenkov light. Knowing when the PMT signal arrives tells us where the beam loss occurs. Using a optical fiber allowed a detector spatial resolution of . The way to improve the resolution is to optimize the monitor working conditions and optical fiber and PMT parameters, potentially leading to a resolution of as fine as according to our estimates.
ISSN:1063-7869
1468-4780
DOI:10.3367/UFNe.0185.201505m.0553