Advances in ion back-flow reduction in cascaded gaseous electron multipliers incorporating R-MHSP elements

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dc.creatorLyashenko, A. V.
dc.creatorBreskin, A.
dc.creatorChechik, R.
dc.creatorVeloso, J. F. C. A.
dc.creatorSantos, J. M. F. Dos
dc.creatorAmaro, F. D.
dc.date2006-07-03
dc.date.accessioned2026-07-07T07:38:24Z
dc.date.available2026-07-07T07:38:24Z
dc.descriptionA new concept is presented for the reduction of ion back-flow in GEM-based cascaded gaseous electron multipliers, by incorporating Micro-Hole & Strip Plate (MHSP) elements operating in reversed-bias mode (R-MHSP). About an order of magnitude reduction in ion back-flow is achieved by diverting back-drifting ions from their original path. A R-MHSP/2GEM/MHSP cascaded multiplier operated at total gain of ~1.5*10^5 yielded ion back-flow fractions of 0.0015 and 0.0004, at drift fields of 0.5 and 0.1 kV/cm, respectively. A 2R-MHSP/MHSP cascaded multiplier operated at a total gain of ~10^5, yielded an ion back-flow fraction of 0.003. We discuss the concept for trapping back-flowing ions in these cascaded multipliers and the relevance to gaseous photomultiplier and TPC applications; directions for further future developments are outlined.
dc.description17 pages, 9 figures, submitted to JINST
dc.identifierhttps://arxiv.org/abs/physics/0607015
dc.identifierhttp://arxiv.org/abs/physics/0607015
dc.identifier2006 JINST 1 P10004
dc.identifierdoi:10.1088/1748-0221/1/10/P10004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/121069
dc.subjectInstrumentation and Detectors
dc.titleAdvances in ion back-flow reduction in cascaded gaseous electron multipliers incorporating R-MHSP elements
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