The Thick-COBRA: a new gaseous electron multiplier for radiation detectors

被引：26
|
作者：
Amaro, F. D. [1 ]
Santos, C. [2 ]
Veloso, J. F. C. A. [2 ]
Breskin, A. [3 ]
Chechik, R. [3 ]
dos Santos, J. M. F. [1 ]
机构：
[1] Univ Coimbra, Dept Phys, Coimbra, Portugal
[2] Univ Aveiro, Dept Phys, P-3800 Aveiro, Portugal
[3] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel
来源：
JOURNAL OF INSTRUMENTATION | 2010年 / 5卷
关键词：
Micropattern gaseous detectors (MSGC; GEM; THGEM; RETHGEM; MICROMEGAS; InGrid; etc); Electron multipliers (gas); Charge transport and multiplication in gas; Detector modelling and simulations II (electric fields; charge transport; multiplication and induction; pulse formation; electron emission; ION BLOCKING; STRIP PLATE; GEM; MICROHOLE; OPERATION;
D O I：
10.1088/1748-0221/5/10/P10002
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The operation principle and preliminary results of a novel gas-avalanche patterned hole electron multiplier, the Thick-COBRA (THCOBRA), are presented. This micro-hole structure is derived from the THGEM and MHSP. Sub-millimeter diameter holes are mechanically drilled in a thin G10 plate, Cu-clad on both faces; on one of the faces the Cu is etched to produce additional anode strips winding between circular cathode strips. Primary avalanches occurring within the holes are followed by additional ones at the anode-strips vicinity. Gains in excess of 5*10(4) were reached with 22.1 keV x-rays in Ar, Ne and Ar-10%CH(4), with 12.2% FWHM energy resolution in Ar-10%CH(4). Higher gains were measured with single photoelectrons. This robust multiplier may have numerous potential applications.
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收藏
页数：11
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