TESTS OF A LARGE-AREA MWPC WITH A CSI PHOTOCATHODE

Authors
KRIZAN P KORPAR S STARIC M STANOVNIK A CINDRO M SKRK D ZAVRTANIK M HAMACHER T MICHEL E
Citation
P. Krizan et al., TESTS OF A LARGE-AREA MWPC WITH A CSI PHOTOCATHODE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 371(1-2), 1996, pp. 151-154
Citations number
8
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
371
Issue
1-2
Year of publication
1996
Pages
151 - 154
Database
ISI
SICI code
0168-9002(1996)371:1-2<151:TOALMW>2.0.ZU;2-G
Abstract
The relative quantum efficiency of several CsI photocathodes in an asy mmetric multiwire proportional chamber has been measured. The photocat hode surface of 24 x 24 cm(2) is divided into 7.5 x 7.5 mm(2) pads and the chamber is operated with methane at normal temperature and pressu re and a gas gain of about 10(5). During tests of the high rate perfor mance (similar to 2 MHz/cm(2)) of a smaller chamber (5 x 5 cm(2)), an interesting time variation of the count rate has been observed when il luminating the chamber with constant UV light.