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Title: Studies of single-photoelectron response and of performance in magnetic field of a H8500C-03 photomultiplier tube

We studied the single-photoelectron detection capabilities of a multianode photomultiplier tube H8500C-03 and its performance in high magnetic field. Our results show that the device can readily resolve signals at the single photoelectron level making it suitable for photon detection in both threshold and ring imaging Cherenkov detectors. We also found that a large longitudinal magnetic field, up to 300 Gauss, induces a change in the relative output of at most 55% for an edge pixel, and of at most 15% for a central pixel. The H8500C-03 signal loss in transverse magnetic fields it is significantly more pronounced than for the longitudinal case. Our studies of single photoelectron reduction in magnetic fields point to the field induced misfocusing of the photoelectron extracted from the photocathode as primary cause of signal loss. With appropriate shielding this PMT could function in high magnetic field environments.
 [1] ;  [1] ;  [2]
  1. JLAB
  2. Duke U.
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-PHY-13-1819; DOE/OR/23177-2933
DOE Contract Number:
AC05-06OR23177; FG02-03ER41231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Instrumentation; Journal Volume: 8
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Cherenkov detectors; Photon detectors for UV, visible and IR photons (vacuum) (photomultipliers, HPDs, others); Spectrometers; Cherenkov and transition radiation