First results with a microcavity plasma panel detector
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 1×1×2 mm cells. It has shown very clean signals of 0.6-2.5 V 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 β particles from a radioactive source, a maximum pixel efficiency greater than 95% is calculated, for operation of the detector over a 100 V wide span of high voltages (HV). Over this same HV range, the background rate per pixel was measured to be 3-4 orders of magnitude lower than the rate with which the cell was illuminated by the β 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.
- Publication:
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Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- June 2015
- DOI:
- 10.1016/j.nima.2014.11.028
- arXiv:
- arXiv:1407.6491
- Bibcode:
- 2015NIMPA.784...56B
- Keywords:
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- Micropattern gas detector;
- Particle detector;
- Plasma panel sensor;
- Physics - Instrumentation and Detectors
- E-Print:
- Submitted to NIM