Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4420
Title: MHSP in reversed-bias operation mode for ion blocking in gas-avalanche multipliers
Authors: Veloso, J. F. C. A. 
Amaro, F. D. 
Maia, J. M. 
Lyashenko, A. V. 
Breskin, A. 
Chechik, R. 
Santos, J. M. F. dos 
Bouianov, O. 
Bouianov, M. 
Keywords: Gaseous photomultipliers; Gas avalanche electron multipliers; Ion back-flow
Issue Date: 2005
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 548:3 (2005) 375-382
Abstract: We present recent results on the operation of gas-avalanche detectors comprising a cascade of gas electron multipliers (GEMs) and Mico-Hole & Strip Plate (MHSP) multiplier operated in reversed-bias (R-MHSP) mode. The operation mechanism of the R-MHSP is explained and its potential contribution to ion-backflow (IBF) reduction is demonstrated. IBF values of 4×10-3 were obtained in cascaded R-MHSP and GEM multipliers at gains of about 104, though at the expense of reduced effective gain in the first R-MHSP multiplier in the cascade.
URI: http://hdl.handle.net/10316/4420
DOI: 10.1016/j.nima.2005.04.063
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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