publication . Preprint . Article . 2014

Development of a Diehard GEM using PTFE insulator substrate

M Wakabayashi; K Komiya; T Tamagawa; Y Takeuchi; K Aoki; A Taketani; H Hamagaki;
Open Access English
  • Published: 25 Mar 2014
Abstract
We have developed the gas electron multiplier (GEM) using polytetrafluoroethylene (PTFE) insulator substrate (PTFE-GEM). Carbonization on insulator layer by discharges shorts the GEM electrodes, causing permanent breakdown. Since PTFE is hard to be carbonized against arc discharges, PTFE-GEM is expected to be robust against breakdown. Gains as high as 2.6x10^4 were achieved with PTFE-GEM (50 um thick) in Ar/CO2 = 70%/30% gas mixture at V_GEM = 730V. PTFE-GEM never showed a permanent breakdown even after suffering more than 40000 times discharges during the experiment. The result demonstrates that PTFE-GEM is really robust against discharges. We conclude that PTF...
Subjects
arXiv: Physics::Instrumentation and DetectorsPhysics::Plasma Physics
free text keywords: Physics - Instrumentation and Detectors, Instrumentation, Mathematical Physics, Optics, business.industry, business, Electrode, Optoelectronics, Carbonization, Nuclear physics, MicroMegas detector, Physics, Polytetrafluoroethylene, chemistry.chemical_compound, chemistry, Gas electron multiplier, Insulator (electricity), Substrate (chemistry)

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