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Proceedings Paper

Microsphere plate electron multiplier: measurements and modeling
Author(s): Anton S. Tremsin; James F. Pearson; John Ernest Lees; George W. Fraser
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Paper Abstract

Microsphere plates (MSPs), a new type of electron multiplier, consisting of sintered disks of glass beads, have recently become available from El-Mul Technologies Ltd. The principles of MSP operation are similar to those of microchannel plates (MCPs). This paper reports a survey of the gain, resistance, dark noise, count rate capability, charge abstraction lifetime, and image characteristics of a number of standard 33 mm diameter microsphere plates (of thickness 0.7 and 1.4 mm), operated both singly and as two-stage multipliers. We also describe a simple Monte-Carlo model of MSP operation, which enables us to estimate numerically a number of MSP characteristics, including (1) output pulse height distributions (PHDs), (2) output electron spatial and energy distributions, and (3) transit time distributions.

Paper Details

Date Published: 1 September 1995
PDF: 13 pages
Proc. SPIE 2518, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, (1 September 1995); doi: 10.1117/12.218391
Show Author Affiliations
Anton S. Tremsin, Univ. of Leicester (United Kingdom)
James F. Pearson, Univ. of Leicester (United Kingdom)
John Ernest Lees, Univ. of Leicester (United Kingdom)
George W. Fraser, Univ. of Leicester (United Kingdom)

Published in SPIE Proceedings Vol. 2518:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI
Oswald H. W. Siegmund; John V. Vallerga, Editor(s)

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