Aging in gaseous photodetectors

This paper describes the present status of aging studies in various photosensitive detectors. New experimental data are presented on aging of trimethylamine (TMA) and ethylferrocene (EF) photosensitive vapors as well as on CsI and SbCs photocathodes. A new explanation of the aging process for CsI ph...

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Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 515; no. 1; pp. 292 - 301
Main Authors Francke, T, Peskov, V
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2003
Subjects
Aging
Photocathodes
Photosensitive detectors
29.40
Aging
Photosensitive detectors
Photocathodes
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Summary:This paper describes the present status of aging studies in various photosensitive detectors. New experimental data are presented on aging of trimethylamine (TMA) and ethylferrocene (EF) photosensitive vapors as well as on CsI and SbCs photocathodes. A new explanation of the aging process for CsI photocathodes based on solid-state physics theory is given. Finally, based on our studies, a general conclusion is made that thin polymer deposits on a detector's cathode due to aging can provoke breakdowns through the Malter-type mechanism, or more precisely, via an explosive field emission mechanism.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2003.09.013