First results on the GEM operated at low gas pressures

Authors
Chechik, R Breskin, A Garty, G Mattout, J Sauli, F Shefer, E
Citation
R. Chechik et al., First results on the GEM operated at low gas pressures, NUCL INST A, 419(2-3), 1998, pp. 423-428
Citations number
14
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
419
Issue
2-3
Year of publication
1998
Pages
423 - 428
Database
ISI
SICI code
0168-9002(199812)419:2-3<423:FROTGO>2.0.ZU;2-H
Abstract
We report on the properties of the Gaseous Electron Multiplier (GEM) operat ed at 10-40 Torr isobutane and methane. We found stable operation at gains of a few thousand, fast response and effective photon-feedback reduction. T he transmission of single electrons through the GEM apertures was studied. Ion-induced feedback, from a wire chamber following the GEM, was found to l imit the total two-stage multiplication at high GEM gains. A stable double- GEM operation with reduced ion-feedback was demonstrated. Some applications are discussed. (C) 1998 Elsevier Science B.V. All rights reserved.