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http://hdl.handle.net/20.500.12386/30553
Title: | The cryogenic anticoincidence detector for ATHENA X-IFU: preliminary test of AC-S9 towards the demonstration model | Authors: | D'ANDREA, MATTEO MACCULI, CLAUDIO ARGAN, ANDREA LOTTI, Simone MINERVINI, GABRIELE PIRO, LUIGI Biasotti, Michele Ceriale, Valentina Gallucci, Giovanni Gatti, Flavio Torrioli, Guido VOLPE, ANGELA |
Issue Date: | 2018 | Volume: | Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray | Editors: | den Herder, Jan-Willem A.; Nikzad, Shouleh; Nakazawa, Kazuhiro | Series: | PROCEEDINGS OF SPIE | Number: | 10699 | First Page: | 106994T | Abstract: | Our team is developing the Cryogenic Anticoincidence Detector (CryoAC) of the ATHENA X-ray Integral Field Unit (X-IFU). It is a 4-pixels TES-based detector, which will be placed less than 1 mm below the main TES array detector. We are now producing the CryoAC Demonstration Model (DM): a single pixel prototype able to probe the detector critical technologies, i.e. the operation at 50 mK thermal bath, the threshold energy at 20 keV and the reproducibility of the thermal conductance between the suspended absorber and the thermal bath. This detector will be integrated and tested in our cryogenic setup at INAF/IAPS, and then delivered to SRON for the integration in the X-IFU Focal Plane Assemby (FPA) DM. In this paper we report the status of the CryoAC DM development, showing the main result obtained with the last developed prototype, namely AC-S9. This is a DM-like sample, which we have preliminary integrated and tested before performing the final etching process to suspend the silicon absorber. The results are promising for the DM, since despite the limitations due to the absence of the final etching (high thermal capacity, high thermal conductance, partial TES surface coverage), we have been able to operate the detector with T<SUB>B</SUB> = 50 mK and to detect 6 keV photons, thus having a low energy threshold fully compatible with our requirement (20 keV). | Conference Name: | Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray | Conference Place: | Austin, Texas, United States | Conference Date: | 10-15 June, 2018 | URI: | http://hdl.handle.net/20.500.12386/30553 | URL: | http://arxiv.org/abs/1807.02344v2 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10699/2313280/The-cyogenic-anticoincidence-detector-for-ATHENA-X-IFU--preliminary/10.1117/12.2313280.short?SSO=1 |
ISSN: | 0277-786X | ISBN: | 9781510619517 9781510619524 |
DOI: | 10.1117/12.2313280 | Bibcode ADS: | 2018SPIE10699E..4TD | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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106994T.pdf | PDF editoriale | 1.26 MB | Adobe PDF | View/Open |
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