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 low-noise front-end electronics is presented, emphasizing the innovative architectural design based on custom-designed Application-Specific Integrated Circuits (ASICs).
| Original language | English |
|---|---|
| Title of host publication | Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray |
| Editors | Jan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa |
| Number of pages | 15 |
| Volume | 11444 |
| Publisher | SPIE - International Society for Optical Engineering |
| Publication date | 2020 |
| Article number | 114448R |
| DOIs | |
| Publication status | Published - 2020 |
| Event | Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray - Online event Duration: 14 Dec 2020 → 18 Dec 2020 |
Conference
| Conference | Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray |
|---|---|
| Location | Online event |
| Period | 14/12/2020 → 18/12/2020 |
| Series | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| ISSN | 0277-786X |
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