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Proceedings Paper

The silicon micro-strip detector plane for the LOFT/wide-field monitor
Author(s): A. Goldwurm; P. Ferrando; D. Götz; P. Laurent; F. Lebrun; O. Limousin; S. Basa; W. Bertoli; Eric Delagnes; Y. Dolgorouky; O. Gevin; A. Gros; C. Gouiffes; F. Jeanneau; C. Lachaud; M. Llored; C. Olivetto; G. Prevot; D. Renaud; J. Rodriguez; C. Rossin; S. Schanne; S. Soldi; P. Varniere
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Paper Abstract

The main objective of the Wide Field Monitor (WFM) on the LOFT mission is to provide unambiguous detection of the high-energy sources in a large field of view, in order to support science operations of the LOFT primary instrument, the LAD. The monitor will also provide by itself a large number of results on the timing and spectral behavior of hundreds of galactic compact objects, Active Galactic Nuclei and Gamma-Ray Bursts. The WFM is based on the coded aperture concept where a position sensitive detector records the shadow of a mask projected by the celestial sources. The proposed WFM detector plane, based on Double Sided micro-Strip Silicon Detectors (DSSD), will allow proper 2-dimensional recording of the projected shadows. Indeed the positioning of the photon interaction in the detector with equivalent fine resolution in both directions insures the best imaging capability compatible with the allocated budgets for this telescope on LOFT. We will describe here the overall configuration of this 2D-WFM and the design and characteristics of the DSSD detector plane including its imaging and spectral performances. We will also present a number of simulated results discussing the advantages that this configuration offers to LOFT. A DSSD-based WFM will in particular reduce significantly the source confusion experienced by the WFM in crowded regions of the sky like the Galactic Center and will in general increase the observatory science capability of the mission.

Paper Details

Date Published: 17 September 2012
PDF: 13 pages
Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84432H (17 September 2012); doi: 10.1117/12.925251
Show Author Affiliations
A. Goldwurm, AstroParticule et Cosmologie (France)
Service d'Astrophysique/IRFU/CEA Saclay (France)
P. Ferrando, AstroParticule et Cosmologie (France)
Service d'Astrophysique/IRFU/CEA Saclay (France)
D. Götz, Service d'Astrophysique/IRFU/CEA Saclay (France)
Astrophysique Instrumentation et Modélisation (AIM) in SAp/CEA Saclay (France)
P. Laurent, AstroParticule et Cosmologie (France)
Service d'Astrophysique/IRFU/CEA Saclay (France)
F. Lebrun, AstroParticule et Cosmologie (France)
Service d'Astrophysique/IRFU/CEA Saclay (France)
O. Limousin, Service d'Astrophysique/IRFU/CEA Saclay (France)
Astrophysique Instrumentation et Modélisation (AIM) in SAp/CEA-Saclay (France)
S. Basa, Lab. d'Astrophysique de Marseille (France)
W. Bertoli, AstroParticule et Cosmologie (France)
Eric Delagnes, SEDI/IRFU/CEA Saclay (France)
Y. Dolgorouky, AstroParticule et Cosmologie (France)
O. Gevin, SEDI/IRFU/CEA Saclay (France)
A. Gros, Service d'Astrophysique/IRFU/CEA Saclay (France)
Astrophysique Instrumentation et Modélisation (AIM) (France)
C. Gouiffes, Service d'Astrophysique/IRFU/CEA Saclay (France)
Astrophysique Instrumentation et Modélisation (AIM) (France)
F. Jeanneau, SEDI/IRFU/CEA Saclay (France)
C. Lachaud, AstroParticule et Cosmologie (France)
M. Llored, Lab. d'Astrophysique de Marseille (LAM) (France)
C. Olivetto, AstroParticule et Cosmologie (France)
G. Prevot, AstroParticule et Cosmologie (France)
D. Renaud, Service d'Astrophysique/IRFU/CEA Saclay (France)
Astrophysique Instrumentation et Modélisation (AIM) (France)
J. Rodriguez, Service d'Astrophysique/IRFU/CEA Saclay (France)
Astrophysique Instrumentation et Modélisation (AIM) (France)
C. Rossin, Lab. d'Astrophysique de Marseille (France)
S. Schanne, Service d'Astrophysique/IRFU/CEA Saclay (France)
Astrophysique Instrumentation et Modélisation (AIM) (France)
S. Soldi, Service d'Astrophysique/IRFU/CEA Saclay (France)
Astrophysique Instrumentation et Modélisation (AIM) (France)
P. Varniere, AstroParticule et Cosmologie (France)


Published in SPIE Proceedings Vol. 8443:
Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Stephen S. Murray; Jan-Willem A. den Herder, Editor(s)

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