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https://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: | https://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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| file47a7411cac8244f28d71cc58b5c0f7a3.pdf | 426.67 kB | Adobe PDF | View/Open |
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