Title

MARGIE — minute of arc resolution hard X-ray/gamma ray imaging telescope for an ultra long duration balloon mission

Abstract

MARGIE (Minute of Arc Resolution Gamma ray Imaging Experiment) is proposed to be a sensitive, large field-of-view, high angular resolution, hard X-ray/gamma ray (20–511 keV) telescope capable of observing gamma ray bursts and point sources with <1′ resolution on a 100 day Ultra Long Duration Balloon (ULDB) mission. MARGIE will be designed to take full advantage of the weight, power, and telemetry capabilities appropriate for a ULDB mission. The current instrument design consists of five coded aperture γ-ray telescopes: a central telescope with 1892 cmb of detector area, 1.9′ angular resolution, and 8.3° half-angle field of view (FOV); and four side-looking telescopes, each with 1945 cmb detector area, 3.8′ resolution, and 26.1° FOV. The five γ-ray telescopes will be surrounded by 10e cmb of 1 cm thick NaI active anticoincidence shields designed both to provide shielding from background and to provide additional sensitive detector area for faint γ-ray bursts. The total instrument mass is 950 kg (science, not including NSBF electronics, ballast, etc.). The total instrument power requirement is 760 W.

Publication Date

2002

Journal Title

Advances in Space Research

Publisher

Elsevier

Digital Object Identifier (DOI)

10.1016/S0273-1177(02)00549-5

Document Type

Article

Rights

Copyright © 2002 Published by Elsevier Ltd.