A high sensitivity payload for balloon-borne hard X-ray astronomy

被引：18
|
作者：
D'Silva, JAR [1 ]
Madhwani, PP [1 ]
Tembhurne, N [1 ]
Manchanda, RK [1 ]
机构：
[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1998年 / 412卷 / 2-3期
关键词：
D O I：
10.1016/S0168-9002(98)00496-3
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A new balloon-borne Large Area Scintillation counter Experiment (LASE) has been built to detect ultrafast variations in the flux of X-ray sources in hard X-ray band upto 200 keV. Presently, the instrument consists of three modules, each made of a 3 mm and a 30 mm NaI(Tl) crystals. arranged in a back-to-back geometry and having an effective area of 400 cm(2). In final configuration, the payload will have an area of 2400 cm(2). The data is spectrum analyzed in 128 channels between 20 and 200 keV and each event is time-tagged to an accuracy of 25 mu s. The estimated sensitivity of the telescope is similar to 10(-6) cm(-2) s(-1) keV(-1) for 3 h of source observation. The detector design, background rejection, on-board trigger system, attitude control parameters and the flight performance are described briefly. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：342 / 354
页数：13
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