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Proceedings Paper

Development of hybrid MSGC with a conductive capillary plate
Author(s): Yuji Nishi; Toru Tanimori; Atsuhiko Ochi; Yasuro Nishi; Hidenori Toyokawa
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Paper Abstract

An intermediate electron multiplier for a MicroStrip Gas Chamber has been developed using a capillary plate. Our purpose was to develop a capillary plate as an intermediate electron multiplier able to be steadily operated under a medium gain of about one hundred and under a high counting rate. The capillary plate used here consists of a bundle of fine glass capillaries each with a diameter of 100 micrometers and a thickness of 1 mm, and has a 9.5 X 9 cm2 detection area and a 57% opening aperture ratio. In order to avoid the charge-up effect on the surfaces of the capillaries, some conductivity was added on the capillaries surfaces, and consequently about a 40 M(Omega) resistivity appeared between both sides of the plate. The conductivity dramatically improved the plates performance: the capillary plate was operated stable with counting rates up to 105 cps/mm2 and no decrease in the gas gain was observed. The capillary plate sufficiently satisfies the requirements for a pre-amplification device for an MSGC. In this paper, a 2D MSGC combined with the above conductive capillary plate was examined, and found to achieve stable operation with a sufficient gain under a high counting rate with no discharge problems.

Paper Details

Date Published: 6 October 1999
PDF: 10 pages
Proc. SPIE 3774, Detectors for Crystallography and Diffraction Studies at Synchrotron Sources, (6 October 1999); doi: 10.1117/12.367114
Show Author Affiliations
Yuji Nishi, Tokyo Institute of Technology (Japan) and CREST/Japan Science and Technology Corp. (Japan)
Toru Tanimori, Tokyo Institute of Technology (Japan) and CREST/Japan Science and Technology Corp. (Japan)
Atsuhiko Ochi, Tokyo Institute of Technology (Japan) and CREST/Japan Science and Technology Corp. (Japan)
Yasuro Nishi, Tokyo Institute of Technology (Japan)
Hidenori Toyokawa, Japan Synchrotron Radiation Research Institute (Japan)


Published in SPIE Proceedings Vol. 3774:
Detectors for Crystallography and Diffraction Studies at Synchrotron Sources
George W. Fraser; Edwin M. Westbrook; Gareth E. Derbyshire, Editor(s)

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