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The cryogenic anticoincidence detector for ATHENA X-IFU: preliminary test of AC-S9 towards the demonstration model
Author(s): Matteo D'Andrea; Claudio Macculi; Andrea Argan; Simone Lotti; Gabriele Minervini; Luigi Piro; Michele Biasotti; Valentina Ceriale; Giovanni Gallucci; Flavio Gatti; Guido Torrioli; Angela Volpe
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Paper 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 TB = 50 mK and to detect 6 keV photons, thus having a low energy threshold fully compatible with our requirement (20 keV).

Paper Details

Date Published: 6 July 2018
PDF: 11 pages
Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 106994T (6 July 2018); doi: 10.1117/12.2313280
Show Author Affiliations
Matteo D'Andrea, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Univ. of Rome "Tor Vergata" (Italy)
Claudio Macculi, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Andrea Argan, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Simone Lotti, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Gabriele Minervini, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Luigi Piro, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Michele Biasotti, Univ. degli Studi di Genova (Italy)
Valentina Ceriale, Univ. degli Studi di Genova (Italy)
Giovanni Gallucci, Istituto Nazionale di Fisica Nucleare (Italy)
Flavio Gatti, Univ. degli Studi di Genova (Italy)
Guido Torrioli, CNR-Istituto di Fotonica e Nanotecnologie (Italy)
Angela Volpe, Agenzia Spaziale Italiana (Italy)


Published in SPIE Proceedings Vol. 10699:
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa, Editor(s)

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