CHICSi -: a compact ultra-high vacuum compatible detector system for nuclear reaction experiments at storage rings.: II.: Detectors

被引:11
作者
Golubev, P
Avdeichikov, V
Carlén, L
Jakobsson, B
Siwek, A
van Veldhuizen, EJ
Westerberg, L
Whitlow, HJ
机构
[1] Lund Univ, Dept Phys, SE-22100 Lund, Sweden
[2] Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[3] Svedberg Lab, SE-75121 Uppsala, Sweden
关键词
multi-detector system; ultra-high vacuum compatibility; ultra-thin detectors;
D O I
10.1016/S0168-9002(03)00302-4
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We describe the detectors for identification of charged particles and fragments in CHICSi, a large solid angle multitelescope system mounted inside an ultra-high vacuum (UHV), cluster-jet target chamber. CHICSi performs nuclear reaction experiments at storage rings. The telescopes consist of a first very thin, 10-14 mum Si detector, a second 300 mum (or possibly 500 pm) ion implanted Si detector supplemented by a 6 mm GSO(Ce) scintillator read out by a photodiode (PD) or by a third 300 mum Si detector. The telescopes provide full charge separation up to Z = 17 and mass resolution up to A = 9 in the energy range 0.7-60A MeV. The thin p-i-n diode detector, etched out from a 280 mum Si wafer, and the GSO/PD detector, both exclusively developed for CHICSi, provide an energy resolution less than or equal to 8%, while the standard 300 mum detectors have less than or equal to 2% energy resolution. Radiation stability of the Si detectors is confirmed up to an integrated flux of 10(10) alpha particles. The GSO detector has 70% light collection efficiency with the optical coupling to the PD a simple open, 0.2 mm, gap. A new method, developed to perform absolute energy calibration for the GSO/PD detector is presented. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:96 / 115
页数:20
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