Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4347
Title: PACEM: a new concept for high avalanche-ion blocking
Authors: Veloso, J. F. C. A. 
Amaro, F. D. 
Azevedo, C. D. R. 
Santos, J. M. F. dos 
Breskin, A. 
Lyashenko, A. 
Chechik, R. 
Keywords: Gaseous electron multipliers; Gaseous photomultipliers; VUV scintillation; Photocathodes
Issue Date: 2007
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 581:1-2 (2007) 261-264
Abstract: We present the Photon-Assisted Cascaded Electron Multiplier (PACEM) as a potential alternative for ion back-flow suppression in gaseous cascade electron multipliers. Using a Micro Hole and Strip Plate-Gas Electron Multiplier (MHSP-GEM) configuration, the number of ions flowing back to the scintillation region is about 1.5 ions per primary electron at an optical gain of 6.5 and a drift field of 0.1 kV/cm, and about 10 ions per primary electron at an optical gain of 10 and a drift field of 0.5 kV/cm. These allow reaching ion back-flow values close to 10-4 and 10-5 at typical operation conditions of TPCs and GPMs, respectively.
URI: http://hdl.handle.net/10316/4347
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
filebaa21dcf52bf44778a5d2d501e39b0b3.pdf442.24 kBAdobe PDFView/Open
Show full item record

Page view(s)

89
checked on Oct 16, 2019

Download(s)

67
checked on Oct 16, 2019

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.