A liquid xenon time projection chamber for γ-ray imaging in astrophysics:: present status and future directions

被引：19

作者：

Aprile, E

Curioni, A

Egorova, V

Giboni, KL

Oberlack, U

Ventura, S

Doke, T

Takizawa, K

Chupp, EL

Dunphy, PP

机构：

[1] Columbia Univ, Dept Phys, Columbia Astrophys Lab, New York, NY 10027 USA

[2] Waseda Univ, Tokyo, Japan

[3] Univ New Hampshire, Durham, NH 03824 USA

[4] Univ Padua, Ist Nazl Fis Nucl, I-35100 Padua, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2001年 / 461卷 / 1-3期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1016/S0168-9002(00)01220-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A liquid xenon time projection chamber (LXeTPC) has been developed to image cosmic gamma -rays in the energy band 0.2-20 MeV. Its performance as Gamma Ray Imaging Telescope (LXeGRIT instrument) has been tested during a high altitude balloon flight (Spring '99, New Mexico). The detector, with 400 cm(2) area and 7 cm drift gap, is filled with 7 l high purity LXe. Both ionization and scintillation light signals are detected to measure the energy deposits and the three spatial coordinates of individual gamma -ray interactions within the sensitive volume. During the. pre-flight calibration experiments the LXeGRIT instrument was extensively tested with gamma -ray sources in the laboratory: a 10% FWHM energy resolution at 1 MeV was determined, scaling with 1/rootE. The detector shows a linear response in the energy range 511 keV-4.4 MeV. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：256 / 261

页数：6

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