Operation of a novel large area, high gain, single stage gaseous electron multiplier

被引:4
作者
Amaro, F. D. [1 ]
Roque, R. [1 ]
Duarte, N., V [1 ]
Cortez, A. [2 ,3 ]
Mir, J. A. [1 ]
机构
[1] Univ Coimbra, Phys Dept, LIBPhys Coimbra Univ, Coimbra, Portugal
[2] Gran Sasso Sci Inst, I-67100 Laquila, Italy
[3] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Laquila, Italy
关键词
Gaseous detectors; Micropattern gaseous detectors (MSGC; GEM; THGEM; RETHGEM; MHSP; MICROPIC; MICROMEGAS; InGrid; etc); Gaseous imaging and tracking detectors; GEM; UNIFORMITY;
D O I
10.1088/1748-0221/16/01/P01033
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The operation of a novel large area micro-patterned gaseous electron multiplier, made from a 125 micron thick copper claded kapton foil, the COBRA_125, is presented. The COBRA_125 is equiped with 3 independent electrodes which allow to establish 2 independent multiplication regions in a single micro-patterened gaseous electron mutiplier. We report on the operation of a COBRA_125 with an active area of 100x100mm(2). Charge gains above 104 and energy resolutions in the range 18%-20% were achieved in a mixture of Ar-CH4 (90%-10%) by irradiation with X-rays from Fe-55 source. Gain and energy resolutions were stable over the detector area, with maximum deviation from the average values of 8% and 15%, respectively.
引用
收藏
页数:10
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