GEM operation in negative ion drift gas mixtures
Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment 526,3 (2004) 409-412;
The first operation of GEM gas gain elements in negative ion gas mixtures is reported. Gains up to several thousand were obtained from single-stage GEMs in CS vapor at low pressure, and in mixtures of CS2 with Argon and Helium, some near I bar total pressure. (C) 2004 Elsevier B.V. All rights reserved.
negative ion tpc;; dark matter;; wimp;; drift;; gem;; detectors;; diffusion
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