Title :
Evaluation of new 5 inch photomultiplier for use in threshold Cherenkov detectors with aerogel radiator
Author :
Wojtsekhowski, B. ; Zorn, C. ; Flyckt, S.O.
Author_Institution :
Thomas Jefferson Nat. Accel. Facility, Newport News, PA, USA
Abstract :
A cost effective alternative to UV-sensitive 5 inch PMTs often used with threshold Aerogel Cherenkov detectors has been developed and tested. The photomultiplier -XP4572-is a variation of the Photonis XP4512 glass window tube with improved electron collection efficiency. Fast timing and high gain were only moderately compromised. The effective quantum efficiency has been measured as twice that of a Burle 8854 Quantacon when exposed to a Cherenkov spectrum generated by Ru-106 electrons (⩽3.54 MeV) through 1 cm of high index, high transparency Matsushita Electric aerogel (n=1.05). This new phototube is being installed in an aerogel-based Cherenkov detector for Hall A at Jefferson Lab
Keywords :
Cherenkov counters; aerogels; photomultipliers; 5 inch; Cherenkov spectrum; Matsushita Electric aerogel; Photonis XP4512 glass window tube; aerogel radiator; effective quantum efficiency; electron collection efficiency; photomultiplier; threshold Cherenkov detectors; threshold aerogel Cherenkov detectors; Costs; Detectors; Electric variables measurement; Electron tubes; Glass; Photoelectricity; Photomultipliers; Testing; Timing; Windows;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2000 IEEE
Conference_Location :
Lyon
Print_ISBN :
0-7803-6503-8
DOI :
10.1109/NSSMIC.2000.949289
