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Advances in Thick GEM-like gaseous electron multipliers. Part II: low-pressure operation

C. K. Shalem·R. Chechik·A. Breskin·K. Michaeli·N. Ben-Haim
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Abstract

We present results on THGEM operation at low gas pressures, in the range 0.5-50 Torr. Gaseous gain up to 100000 was recorded at 10 Torr of Isobutane in a single multiplier element, with pulses rise-time in the few ns range. Cascaded operation of two THGEMs is reported, with similar total gain but at lower voltages on each element. The present work encompasses a large variety of THGEM geometries and includes electric-field distribution calculations and electron transport simulations. We discuss the operation mechanism and some possible applications of THGEMs at low gas pressures.

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C. K. Shalem, R. Chechik, A. Breskin, K. Michaeli, N. Ben-Haim. 2006-01-17. Advances in Thick GEM-like gaseous electron multipliers. Part II: low-pressure operation. https://doi.org/10.1016/j.nima.2005.12.219

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