Chinese Physics C > 1996, Vol. 20 > Issue(S1): 23-29

A Two-Dimensional Position Sensitive Multi-Stage Detection System with a Wide Dynamic Range for Heavy Ion Reaction

Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China

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Abstract：
A two-dimensional position sensitive multi-stage detection system with a wide dynamic range for a heavy ion reaction is described in this paper. It consists of four parts:a longitudinal electric field gas filled Ionization Chamber (IC), a Position Sensitive Silicon Detector (PSSD) (45 mm×45 mm, 400 μm), a large area PIN Silicon Photodiode (SPD) (48 mm×48 mm, 300 μm),and a 16 element CsI(Tl) scintillation detector array. The energy resolutions for IC and PSSD tested with a source ²⁴¹Am(5.486 MeV) are 3% and 2.6%, respectively. The energy dynamic range for αparticle detection is about 2-130 MeV, and the fragments with ZValues from Z=2 to Z=21 are identified in the reaction of 25 MeV/u ⁴⁰Ar+ ¹¹⁵In. The Zresolving power is Z/△ Z≈ 44.5 (FWHM) for Z=18. The position resolution of PSSD is 0.86±0.03 mm (FWHM).
- particle identification,
- longitudinal electric field,
- energy resolution,
- position resolution

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Wang Jinchuan, Zhan Wenlong, Guo Zhongyan, Xi Hongfei, Zhou Jianqun, Zhao Youxiong, Lei Huaihong and Luo Yongfeng. A Two-Dimensional Position Sensitive Multi-Stage Detection System with a Wide Dynamic Range for Heavy Ion Reaction[J]. Chinese Physics C, 1996, 20(S1): 23-29.

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Received: 1995-03-15

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Supported by the National Natural Science Foundation of China and the Science Foundation of the Chinese Academy of Sciences.

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沈阳化工大学材料科学与工程学院沈阳 110142

A Two-Dimensional Position Sensitive Multi-Stage Detection System with a Wide Dynamic Range for Heavy Ion Reaction

Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou, China

Received Date:1995-03-15

Fund Project:Supported by the National Natural Science Foundation of China and the Science Foundation of the Chinese Academy of Sciences.

Abstract:A two-dimensional position sensitive multi-stage detection system with a wide dynamic range for a heavy ion reaction is described in this paper. It consists of four parts:a longitudinal electric field gas filled Ionization Chamber (IC), a Position Sensitive Silicon Detector (PSSD) (45 mm×45 mm, 400μm), a large area PIN Silicon Photodiode (SPD) (48 mm×48 mm, 300μm),and a 16 element CsI(Tl) scintillation detector array. The energy resolutions for IC and PSSD tested with a source²⁴¹Am(5.486 MeV) are 3% and 2.6%, respectively. The energy dynamic range forαparticle detection is about 2-130 MeV, and the fragments withZValues fromZ=2 toZ=21 are identified in the reaction of 25 MeV/u⁴⁰Ar+¹¹⁵In. TheZresolving power isZ/△Z≈ 44.5 (FWHM) forZ=18. The position resolution of PSSD is 0.86±0.03 mm (FWHM).