The anti-coincidence detector for the GLAST large area telescope

被引：40

作者：

Moiseev, A. A. ^{[1
]}

Hartman, R. C.

Ormes, J. F.

Thompson, D. J.

Amato, M. J.

Johnson, T. E.

Segal, K. N.

Sheppard, D. A.

机构：

[1] Univ Space Res Assoc, Columbia, MD 21044 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

ASTROPARTICLE PHYSICS | 2007年 / 27卷 / 05期

关键词：

gamma-ray telescope; plastic scintillating detector; particle detection efficiency;

D O I：

10.1016/j.astropartphys.2006.12.003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper describes the design, fabrication and testing of the Anti-Coincidence Detector (ACD) for the Gamma-ray Large Area Space Telescope (GLAST) Large Area Telescope (LAT). The ACD is LATs first-level defense against the charged cosmic ray background that outnumbers the gamma rays by 3-5 orders of magnitude. The ACD covers the top and four sides of the LAT tracking detector, requiring a total active area of similar to 8.3 m(2). The ACD detector utilizes plastic scintillator tiles with wavelength shifting fiber readout. In order to suppress self-veto by shower particles at high gamma-ray energies, the ACD is segmented into 89 tiles of different sizes. The overall ACD efficiency for detection of singly charged relativistic particles entering the tracking detector from the top or sides of the LAT exceeds the required 0.9997. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：339 / 358

页数：20

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