Development of hybrid MSGC with a conductive capillary plate

Yuji Nishi; Toru Tanimori; Atsuhiko Ochi; Yasuro Nishi; Hidenori Toyokawa

doi:10.1117/12.367114

6 October 1999 Development of hybrid MSGC with a conductive capillary plate

Yuji Nishi, Toru Tanimori, Atsuhiko Ochi, Yasuro Nishi, Hidenori Toyokawa

Proceedings Volume 3774, Detectors for Crystallography and Diffraction Studies at Synchrotron Sources; (1999) https://doi.org/10.1117/12.367114
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

Yuji Nishi, Toru Tanimori, Atsuhiko Ochi, Yasuro Nishi, and Hidenori Toyokawa "Development of hybrid MSGC with a conductive capillary plate", Proc. SPIE 3774, Detectors for Crystallography and Diffraction Studies at Synchrotron Sources, (6 October 1999); https://doi.org/10.1117/12.367114

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