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Proceedings Paper

XENA: a liquid-xenon Compton telescope for gamma-ray astrophysics in the MeV regime
Author(s): Elena Aprile; Valeri Egorov; Karl-Ludwig Giboni; Steven M. Kahn; Tomotake Kozu; Uwe G. Oberlack; S. Centro; Sandro Ventura; Tadayoshi Doke; Jun Kikuchi; Edward L. Chupp; Philip P. Dunphy; Dieter H. Hartmann; Mark D. Leising; H. Bloemen
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Paper Abstract

XENA is a new Compton telescope concept, designed to image about 50% of the gamma-ray sky with a sensitivity that would significantly surpass CGRO/COMPTEL's multi-year sensitivity with a 2 weeks balloon flight from the Southern Hemisphere. The detector, based on liquid xenon time-projection chambers, is optimized for approximately 0.3 - 10 MeV and combines high efficiency within a 3 sr field-of-view with approximately 1 degree(s) angular resolution and excellent background reduction capability. XENA's primary scientific goal is the discovery and mapping of 60Fe radioactivity from the Galaxy, which is pivotal for understanding nucleosynthesis. XENA will detect 60Fe even if current predictions are 7X overestimated. At 1.8 MeV, XENA's sensitivity (6 10-6 cm-2 s-1) will significantly refine the COMPTEL 26Al mapping along the Southern Milky Way. Also, XENA would be the first instrument capable to decide whether the 3 - 7 MeV excess seen in Orion is indeed due to nuclear lines from 12C and 16O, and it could discover the predicted lower-energy lines. The scanned sky area includes many continuum (gamma) -ray sources as well, such as pulsars and numerous (gamma) -ray AGNs. Secondary scientific objectives include also supernova remnants, gamma-ray bursts, and solar flares.

Paper Details

Date Published: 1 July 1998
PDF: 12 pages
Proc. SPIE 3446, Hard X-Ray and Gamma-Ray Detector Physics and Applications, (1 July 1998); doi: 10.1117/12.312882
Show Author Affiliations
Elena Aprile, Columbia Univ. (United States)
Valeri Egorov, Columbia Univ. (United States)
Karl-Ludwig Giboni, Columbia Univ. (United States)
Steven M. Kahn, Columbia Univ. (United States)
Tomotake Kozu, Columbia Univ. (United States)
Uwe G. Oberlack, Columbia Univ. (United States)
S. Centro, Univ. of Padua (Italy)
Sandro Ventura, Univ. of Padua (Italy)
Tadayoshi Doke, Waseda Univ. (Japan)
Jun Kikuchi, Waseda Univ. (Japan)
Edward L. Chupp, Univ. of New Hampshire (United States)
Philip P. Dunphy, Univ. of New Hampshire (United States)
Dieter H. Hartmann, Clemson Univ. (United States)
Mark D. Leising, Clemson Univ. (United States)
H. Bloemen, Space Research Organization of the Netherlands-Utrecht (Netherlands)

Published in SPIE Proceedings Vol. 3446:
Hard X-Ray and Gamma-Ray Detector Physics and Applications
F. Patrick Doty; Richard B. Hoover, Editor(s)

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