Observation of full charge collection efficiency in heavily irradiated n plus p strip detectors irradiated up to 3 x 1015 neq/cm2

被引:29
作者
Mandic, Igor [1 ]
Cindro, Vladimir [1 ]
Gorisek, Andrej [1 ]
Kramberger, Gregor [1 ]
Mikuz, Marko [1 ,2 ]
Zavrtanik, Marko [1 ]
机构
[1] Jozef Stefan Inst, Ljubljana, Slovenia
[2] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia
关键词
Microstrip detectors; P-type silicon; Radiation Hardness; Super LHC; SILICON DETECTORS; MICROSTRIP DETECTORS; NEUTRONS; BIAS;
D O I
10.1016/j.nima.2009.08.004
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
In this work we report measurements of signals caused by fast electrons from a Sr-90 source detected by n-type readout strips implanted in p-type bulk silicon, read out with a SCT128 chip. Charge collection measurements with detectors irradiated with reactor neutrons Up to 10(16) n(eq)/cm(2) were performed up to very high reverse bias voltages of over 2000V. The most probable value of collected charge measured with detectors irradiated up to 3 x 10(15) n(eq)/cm(2) was as high as that measured before irradiation. Detectors irradiated to 10(16) n(eq)/cm(2) also exhibited very good performance. Because of the large resistance of the heavily irradiated silicon detectors they can be biased with a high forward voltage, allowing charge collection measurements to also be performed in the forward bias mode of operation. Simulations of charge collection in an irradiated detector were compared to measurements. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:474 / 477
页数:4
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