Investigation of the radiation damage of GaAs detectors by neutrons and photons

被引：18

作者：

Braunschweig, W ^{[1
]}

Kubicki, T ^{[1
]}

Lubelsmeyer, K ^{[1
]}

Pandoulas, D ^{[1
]}

Syben, O ^{[1
]}

Tenbusch, F ^{[1
]}

Toporowsky, M ^{[1
]}

Wilms, T ^{[1
]}

Wittmer, B ^{[1
]}

Xiao, WJ ^{[1
]}

机构：

[1] RHEIN WESTFAL TH AACHEN,INST PHYS 1,D-52056 AACHEN,GERMANY

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1996年 / 372卷 / 1-2期

关键词：

D O I：

10.1016/0168-9002(95)01297-4

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Surface barrier particle detectors, processed in Aachen using SI GaAs from several manufacturers, have been irradiated with neutrons (peak energy similar to 1 MeV) up to fluences of 4.0 x 10(14) n/cm(2) and with photons from a Co-60 source with a dose of 100 Mrad. All detectors work well after the irradiation. Detectors biased with 200 V during the neutron irradiation show no significant difference from those not biased. After irradiation with 4.0 X 10(14) n/cm(2) the leakage currents at 200 V are a factor of 4 greater than those before irradiation. At the highest radiation level the signal for minimum ionizing particles corresponds to 7200 electrons (at 200 V bias voltage) independent of peaking times between 40 ns and 2.2 mu s. The signals for alpha-particles (2.2 mu s peaking time, 200 V bias voltage) are about 20% of those before irradiation. The exposure to the 100 Mrad photon dose caused little change of the detector performance. The leakage currents were even reduced by about 10%.

引用

页码：111 / 116

页数：6

共 6 条

[1]

*CERN LHCC, 1994, 9438 CERNLHCC, P114

[2]

EDWARDS M, 1990, P LHC WORKSHOP, V3, P584

[3] RADIATION TESTS ON GAAS PARTICLE DETECTORS [J].

KARPINSKI, W ;

KUBICKI, T ;

LUBELSMEYER, K ;

TOPOROWSKY, M ;

WALLRAFF, W ;

HEIME, K ;

WULLER, R .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1992, 323 (03) :635-637

[4]

KUBICKI T, 1994, LARGE SCALE APPL RAD, V46

[5]

KUBICKI T, 9317 RWTH PITHA

[6]

TOPOROWSKY M, 1994, IN PRESS 4 INT C ADV

← 1 →