Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1829892 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2007 | 4 Pages |
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 0.1Â kV/cm, and about 10 ions per primary electron at an optical gain of 10 and a drift field of 0.5Â kV/cm. These allow reaching ion back-flow values close to 10â4 and 10â5 at typical operation conditions of TPCs and GPMs, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
J.F.C.A. Veloso, F.D. Amaro, C.D.R. Azevedo, J.M.F. dos Santos, A. Breskin, A. Lyashenko, R. Chechik,