FAST RICH DETECTOR WITH A CESIUM IODIDE PHOTOCATHODE AT ATMOSPHERIC-PRESSURE

被引：24

作者：

BRAEM, A

DIMAURO, A

NAPPI, E

LJUBICIC, A

PAIC, G

PIUZ, F

POSA, F

RIBEIRO, RS

SCOGNETTI, T

WILLIAMS, TD

机构：

[1] CERN, CH-1211 GENEVA 23, SWITZERLAND

[2] RUDJER BOSKOVIC INST, ZAGREB, CROATIA

[3] INFN, BARI, ITALY

[4] POLITECN BARI, BARI, ITALY

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1994年 / 343卷 / 01期

关键词：

D O I：

10.1016/0168-9002(94)90546-0

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

CsI photocathodes of 30 X 30 cm 2 size have been operated in a fast RICH detector composed of a NaF radiator and a multiwire proportional chamber with a cathode pad readout. Results are presented from tests with a 3 GeV/c proton beam. A Cherenkov angular resolution of 8 mrad is obtained by detecting a mean of 8 photoelectrons per ring. Methods are described for counting the Cherenkov photons and evaluating the differential quantum efficiency of the CsI photocathode. The results obtained with photons impinging at a large angle on the CsI layer are presented and discussed in comparison with higher quantum efficiencies observed under different experimental conditions.

引用

页码：163 / 172

页数：10

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