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.
@article{arxiv.physics/0601119,
title = {Advances in Thick GEM-like gaseous electron multipliers. Part II: low-pressure operation},
author = {C. K. Shalem and R. Chechik and A. Breskin and K. Michaeli and N. Ben-Haim},
journal= {arXiv preprint arXiv:physics/0601119},
year = {2019}
}
Comments
19 pages, 13 figures. Submitted to Nuclear Instruments and Methods A, Dec 21, 2005