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Proceedings Paper

X-ray and UV detection with the Micro-Hole and Strip Plate gaseous detector
Author(s): J. F. C. A. Veloso; J. M. F. dos Santos; A. Breskin; R. Chechik
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Paper Abstract

We present a review on the research carried out with the Micro-Hole & Strip plate (MHSP) gaseous electron multiplier. In this new device charge multiplication occurs in two stages: radiation-induced electrons are multiplied in small holes and the resulting avalanche is further multiplied on anode strips patterned on the multiplier's bottom electrode. This structure provides fast multiplication process, has a high total gain even in noble gas mixtures and provides good localization properties. Detectors based on this principle have shown gains above 104 and energy resolution of about 14% for 5.9-keV X-rays; large gains were obtained at high gas pressures as well, allowing for efficient detection of higher-energy X-rays. The properties of UV-photon detectors comprising an MHSP coupled to semitransparent CsI photocathodes or with reflective ones deposited on the multiplier's top surface were investigated. The operation mechanism of these detectors and their most significant results are presented.

Paper Details

Date Published: 18 August 2005
PDF: 9 pages
Proc. SPIE 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, 58980I (18 August 2005); doi: 10.1117/12.620488
Show Author Affiliations
J. F. C. A. Veloso, Univ. of Aveiro (Portugal)
Univ. of Coimbra (Portugal)
J. M. F. dos Santos, Univ. of Coimbra (Portugal)
A. Breskin, The Weizmann Institute of Science (Israel)
R. Chechik, The Weizmann Institute of Science (Israel)

Published in SPIE Proceedings Vol. 5898:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV
Oswald H. W. Siegmund, Editor(s)

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