Title of article
MHSP in reversed-bias operation mode for ion blocking in gas-avalanche multipliers
Author/Authors
Veloso، نويسنده , , J.F.C.A. and Amaro، نويسنده , , F.D. and Maia، نويسنده , , J.M. and Lyashenko، نويسنده , , A.V. and Breskin، نويسنده , , A. and Chechik، نويسنده , , R. and dos Santos، نويسنده , , J.M.F. and Bouianov، نويسنده , , O. and Bouianov، نويسنده , , M.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
8
From page
375
To page
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.
Keywords
Gaseous photomultipliers , Gas avalanche electron multipliers , TPC , GEM , MHSP , Ion back-flow
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2005
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2199142
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