Beam studies of novel THGEM-based potential sampling elements for Digital Hadron Calorimetry

S. Bressler; L. Arazi; H. Natal da Luz; C. D. A. Azevedo; L. Moleri; E. Oliveri; M. Pitt; A. Rubin; J. M. F. dos Santos; J. F. C. A. Veloso; A. Breskin

arXiv · 1305.4657

Beam studies of novel THGEM-based potential sampling elements for Digital Hadron Calorimetry

S. Bressler·L. Arazi·H. Natal da Luz·C. D. A. Azevedo·L. Moleri·E. Oliveri·M. Pitt·A. Rubin·J. M. F. dos Santos·J. F. C. A. Veloso·A. Breskin

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Abstract

Beam studies of thin single- and double-stage THGEM-based detectors are presented. Several 10 x 10 cm^2 configurations with a total thickness of 5-6 mm (excluding readout electronics), with 1 x 1 cm^2 pads inductively coupled through a resistive layer to APV-SRS readout electronics, were investigated with muons and pions. Detection efficiencies in the 98% range were recorded with an average pad-multiplicity of ~1.1. The resistive anode resulted in efficient discharge damping, with few-volt potential drops; discharge probabilities were ~10^{-7} for muons and 10^{-6} for pions in the double-stage configuration, at rates of a few kHz/cm^2. These results, together with the robustness of THGEM electrodes against spark damage and their suitability for economic production over large areas make THGEM-based detectors highly competitive compared to the other technologies considered for the SiD-DHCAL.

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S. Bressler, L. Arazi, H. Natal da Luz, C. D. A. Azevedo, L. Moleri, E. Oliveri, M. Pitt, A. Rubin, J. M. F. dos Santos, J. F. C. A. Veloso, A. Breskin. 2013-05-20. Beam studies of novel THGEM-based potential sampling elements for Digital Hadron Calorimetry. https://arxiv.org/abs/1305.4657

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