The XGIS instrument on-board THESEUS: the detection plane and on-board electronics

Journal
Date Issued
2020
Author(s)
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Virgilli, E.
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Bellutti, P.
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Bertuccio, G.
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Borghi, G.
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Ficorella, F.
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Gandola, M.
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Grassi, M.
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Lorenzi, P.
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Malcovati, P.
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Mele, F.
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Orleański, P.
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Picciotto, A.
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Rachevski, A.
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Rashevskaya, I.
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Santangelo, A.
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Sarra, P.
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Tenzer, C.
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Vacchi, A.
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Zampa, G.
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Zampa, N.
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Zorzi, Nicola
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Hedderman, Paul
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Winkler, M.
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Gemelli, Alessandro
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Kuvvetli, Ifran
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Pedersen, Søren Møller
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Tcherniak, Denis
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Bune Jensen, Lucas Christoffer
DOI
Abstract
The X and Gamma Imaging Spectrometer instrument on-board the THESEUS mission (selected by ESA in the framework of the Cosmic Vision M5 launch opportunity, currently in phase A) is based on a detection plane composed of several thousands of single active elements. Each element comprises a 4.5×4.5×30 mm3 CsI(Tl) scintillator bar, optically coupled at both ends to Silicon Drift Detectors (SDDs). The SDDs acts both as photodetectors for the scintillation light and as direct X-ray sensors. In this paper the design of the XGIS detection plane is reviewed, outlining the strategic choices in terms of modularity and redundancy of the system. Results on detector-electronics prototypes are also described. Moreover, the design and development of the lownoise front-end electronics is presented, emphasizing the innovative architectural design based on custom-designed Application-Specific Integrated Circuits (ASICs).
Coverage
Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray
All editors
den Herder, Jan-Willem A.; Nikzad, Shouleh;Nakazawa, Kazuhiro
Series
Volume
11444
Start page
114448R
Conferenece
Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray
Conferenece place
Online Only, California, United States
Conferenece date
14-18 December, 2020
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2020SPIE11444E..8RF
Rights
open.access
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