Title of article
Study of CsI photocathodes: volume resistivity and ageing
Author/Authors
Vavra، نويسنده , , J. and Breskin، نويسنده , , A. and Buzulutskov، نويسنده , , A. and Chechik، نويسنده , , R. and Shefer، نويسنده , , E.، نويسنده ,
Pages
9
From page
154
To page
162
Abstract
Wire-chamber gaseous electron multipliers coupled to CsI photocathodes, provide interesting means for UV-photon imaging over a very large area. We report on the measurement of the CsI resistivity, important for the understanding of rate-dependent effects in CsI-based detectors. Photon counting at high rates is also closely connected to long-term photocathode stability. We present results on ageing of CsI photocathodes under high photon flux, with one atmosphere CH4 and under a detector gain of 105, for several substrate materials. We compare the ageing results with that of CsI photocathodes coated with thin NaF protective films.
Journal title
Astroparticle Physics
Record number
2000838
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