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arXiv · 1407.6491

First results with a microcavity plasma panel detector

R. Ball·M. Ben-Moshe·Y. Benhammou·R. Bensimon·J. W. Chapman·M. Davies·E. Etzion·C. Ferretti·P. S. Friedman·D. S. Levin·Y. Silver·R. L. Varner·C. Weaverdyck·B. Zhou
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Abstract

A new type of gaseous micropattern particle detector based on a closed-cell microcavity plasma panel sensor is reported. The first device was fabricated with 1 x 1 x 2 mm cells. It has shown very clean signals of 0.6 to 2.5 volt amplitude, fast rise time of approximately 2 ns and FWHM of about 2 ns with very uniform signal shapes across all pixels. From initial measurements with beta particles from a radioactive source, a maximum pixel efficiency of greater than 95% is calculated, for operation of the detector over a 100V wide span of high voltages (HV). Over this same HV range, the background rate per pixel was measured to be 3 to 4 orders of magnitude lower than the rate with the cell illuminated by the beta source. Pixel-to-pixel count rate uniformity is within 3% and stable within 3% for many days. The time resolution is 2.4 ns, and a very low cell-to-cell crosstalk has been measured between cells separated by 2 mm.

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R. Ball, M. Ben-Moshe, Y. Benhammou, R. Bensimon, J. W. Chapman, M. Davies, E. Etzion, C. Ferretti, P. S. Friedman, D. S. Levin, Y. Silver, R. L. Varner, C. Weaverdyck, B. Zhou. 2014-07-24. First results with a microcavity plasma panel detector. https://doi.org/10.1016/j.nima.2014.11.028

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