CsI calorimeter with 3-D position resolution

被引：12

作者：

Schopper, F ^{[1
]}

Andritschke, R ^{[1
]}

Shaw, H ^{[1
]}

Nefzger, C ^{[1
]}

Zoglauer, A ^{[1
]}

Schönfelder, V ^{[1
]}

Kanbach, G ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-81245 Munich, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 442卷 / 1-3期

关键词：

CsI; 3-D;

D O I：

10.1016/S0168-9002(99)01261-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

New gamma-ray calorimeter have been developed for the MEGA Compton camera. They consist of arrays of small CsI(Tl) scintillator bars read out by Silicon PIN-diodes and low noise, self-triggering frontend electronics. The length of the bars (the thickness of the calorimeter) can be varied for different applications to fit the stopping power needed and the light loss tolerable. In this paper we present calibration results from 2 cm long bars with diodes on one side, and 8 cm long bars with diodes on two opposite sides. Double-sided readout gives 3-D information of interactions which will be used to overcome the limited position resolution in Anger-cameras at high energies. Simpler detection devices like Anger-cameras might finally resolve only the centre of gravity. As events from gamma-rays with energies of MeV do extend over several cm, it is a prerequisite for an imaging device to resolve the interaction structure in detail. Combining CsI(Tl) scintillators, Silicon PIN-photodiodes and frontend electronics inside the housing results in a cheap rugged design. While the development in our institute is mainly done for the Compton camera prototype, many other applications are conceivable. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：394 / 399

页数：6

共 4 条

[1] THE OPTIMIZATION OF SMALL CSI(TL) GAMMA-RAY DETECTORS [J].

BIRD, AJ ;

CARTER, T ;

DEAN, AJ ;

RAMSDEN, D ;

SWINYARD, BM .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1993, 40 (04) :395-399

[2] Gamma ray spectroscopy with CsI(Tl) scintillator coupled to silicon drift chamber [J].

Fiorini, C ;

Longoni, A ;

Perotti, F ;

Labanti, C ;

Lechner, P ;

Struder, L .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1997, 44 (06) :2553-2560

[3] PROPERTIES OF CSI(TL) RENAISSANCE OF AN OLD SCINTILLATION MATERIAL [J].

GRASSMANN, H ;

LORENZ, E ;

MOSER, HG .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1985, 228 (2-3) :323-326

[4] Si pad detectors [J].

Weilhammer, P ;

Nygard, E ;

Dulinski, W ;

Czermak, A ;

Djama, F ;

Gadomski, S ;

Roe, S ;

Rudge, A ;

Schopper, F ;

Strobel, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 383 (01) :89-97

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