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

Authors
BRAEM A DIMAURO A NAPPI E LJUBICIC A PAIC G PIUZ F POSA F RIBEIRO RS SCOGNETTI T WILLIAMS TD
Citation
A. Braem et al., FAST RICH DETECTOR WITH A CESIUM IODIDE PHOTOCATHODE AT ATMOSPHERIC-PRESSURE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 343(1), 1994, pp. 163-172
Citations number
30
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
343
Issue
1
Year of publication
1994
Pages
163 - 172
Database
ISI
SICI code
0168-9002(1994)343:1<163:FRDWAC>2.0.ZU;2-N
Abstract
CsI photocathodes of 30 X 30 cm 2 size have been operated in a fast RI CH detector composed of a NaF radiator and a multiwire proportional ch amber with a cathode pad readout. Results are presented from tests wit h a 3 GeV/c proton beam. A Cherenkov angular resolution of 8 mrad is o btained by detecting a mean of 8 photoelectrons per ring. Methods are described for counting the Cherenkov photons and evaluating the differ ential quantum efficiency of the CsI photocathode. The results obtaine d with photons impinging at a large angle on the CsI layer are present ed and discussed in comparison with higher quantum efficiencies observ ed under different experimental conditions.