Compton imaging of MeV gamma-rays with the Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT)

被引：37

作者：

Aprile, E. ^{[1
]}

Curioni, A. ^{[1
]}

Giboni, K. L. ^{[1
]}

Kobayashi, M. ^{[1
]}

Oberlack, U. G. ^{[2
]}

Zhang, S. ^{[1
]}

机构：

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

[2] Rice Univ, Dept Phys & Astron, Houston, TX USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2008年 / 593卷 / 03期

基金：

中国国家自然科学基金;

关键词：

liquid xenon; time projection chambers; gamma rays; gamma ray imaging; Compton imaging;

D O I：

10.1016/j.nima.2008.05.039

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT) is the first realization of a liquid xenon time projection chamber for Compton imaging of MeV gamma-ray sources in astrophysics. By measuring the energy deposit and the three spatial coordinates of individual gamma-ray scattering points, the location of the source in the sky is inferred with Compton kinematics reconstruction. The angular resolution is determined by the detector's energy and spatial resolutions, as well as by the separation in space between the first and second scattering. The imaging response of LXeGRIT was established with y-rays from radioactive sources, during calibration and integration at the Columbia Astrophysics Laboratory, prior to the 2000 balloon flight mission. In this paper we describe in detail the various steps involved in imaging sources with LXeGRIT and present experimental results on angular resolution and other parameters which characterize its performance as a Compton telescope. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：414 / 425

页数：12

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