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Further studies on the gain properties of a Gas Electron Multiplier with a Micr...
Mir, J. A.; Stephenson, R.; Rhodes, N. J.; Schooneveld, E. M.; Luz, H. Natal da; Veloso, J. F. C. A.; Santos, J. M. F. dos; Azevedo, C. D. R.A Gas Electron Multiplier with Micro-Induction Gap Amplifying Structure (GEM-MIGAS) is formed when the induction gap of the GEM is set between 50 and 100 [mu]m using kapton pillars spaced at regular intervals. This configuration combines the properties of a GEM and Micromegas, allowing operation in tandem to generate high charge gains. We measured the essential operational parameters of this system using argon-...
Short induction gap gas electron multiplier (GEM) for X-ray spectroscopy
Mir, J. A.; Stephenson, R.; Rhodes, N. J.; Schooneveld, E. M.; Veloso, J. F. C. A.; Santos, J. M. F. dosExperimental work was carried out to evaluate the performance of a Gas Electron Multiplier (GEM) operated with a micromesh readout plane that enabled the induction gap to be set at 50 [mu]m. We measured the essential operational parameters of this system using Ar(75%)-isobutane (25%) as the counter gas mixture. The measurements included the effective gain, effective gain stability, and the X-ray energy resoluti...
Application of the microhole and strip plate detector for neutron detection
Veloso, J. F. C. A.; Amaro, F.; Santos, J. M. F. dos; Mir, J. A.; Derbyshire, G. E.; Stephenson, R.; Rhodes, N. J.; Schooneveld, E. M.We introduce the microhole and strip plate (MHSP) detector as a micropattern detector for the detection of thermal and epithermal neutrons. Detection sensitivity is obtained by filling these detectors with 3He at high pressures. We propose the use of argon-xenon penning mixtures as the stopping gas as opposed to the usual carbon based stopping gases. These argon-xenon mixtures provide suitable gas gains for the...
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