An integrated micromegas UV-photon detector


Melai, Joost and Lyashenko, Alexey and Breskin, Amos and Graaf, Harry van der and Timmermans, Jan and Visschers, Jan and Salm, Cora and Schmitz, Jurriaan (2010) An integrated micromegas UV-photon detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 633 . pp. 194-197. ISSN 0168-9002

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Abstract:Preliminary results of a photon detector combining a Micromegas-like multiplier coated with a UV-sensitive CsI photocathode are described. The multiplier is made in a CMOS compatible InGrid technology, which allows to postprocess it directly on the surface of an imaging IC. This method is aimed at building light-sensitive imaging detectors where all elements are monolithically integrated. We show that the CsI photocathode deposited in the InGrid mesh does not alter the device performance. Maximum gains of 6000 were reached in a single-grid element operated in Ar/CH4, with a 2% ion backflow fraction returning to the photocathode.
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Copyright:© 2011 Elsevier
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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