A THRESHOLD GASEOUS 32-CHANNEL CERENKOV COUNTER OF THE EXCHARM SPECTROMETER

Authors
ALEEV AN AREFEV VA BALANDIN VP GAVRISHCHUK OP ZINCHENKO AI IVANCHENKO IM KAMBURYAN AF KAPISHIN MN KARPENKO NN KVIRIKASHVILI GA KEKELIDZE VD KIRILLOV DA KOSAREV IG KUZMIN NA MOROZOV AN ODISHVILI AK POTREBENIKOV YK PROGULOVA TB SASHIN VA SPASKOV VN TATISHVILI GT KHRISTOV PZ SEMENOV VK DEVITSIN EG KOZLOV VA ZAVERTYAEV MV
Citation
An. Aleev et al., A THRESHOLD GASEOUS 32-CHANNEL CERENKOV COUNTER OF THE EXCHARM SPECTROMETER, Instruments and experimental techniques, 39(4), 1996, pp. 492-497
Citations number
8
Categorie Soggetti
Instument & Instrumentation",Engineering
Journal title
Instruments and experimental techniques → ACNP
ISSN journal
00204412
Volume
39
Issue
4
Year of publication
1996
Pages
492 - 497
Database
ISI
SICI code
0020-4412(1996)39:4<492:ATG3CC>2.0.ZU;2-L
Abstract
A 32-channel threshold gaseous Cerenkov counter is described. The coun ter consists of a 420-cm-thick air radiator at atmospheric pressure. S pherical mirrors with a 214-cm radius of curvature along with FEU-125 and FEU-49B photomultipliers are used for collecting and detecting the Cerenkov radiation with the counter. Entrance windows of the photomul tipliers are coated with films of spectrum-shifting materials. The cha rged-particle detection efficiency at the plateau of the threshold res ponse (beta greater than or equal to 0.99984) is better than 97%. The counter is part of a charged-particle identifying system of the EXCHAR M spectrometer.