The TES-based Cryogenic AntiCoincidence Detector (CryoAC) of ATHENA X-IFU: a large area silicon microcalorimeter for background particles detection
arXiv:2401.10827 · doi:10.1007/s10909-023-03034-5
Abstract
We are developing the Cryogenic AntiCoincidence detector (CryoAC) of the ATHENA X-IFU spectrometer. It is a TES-based particle detector aimed to reduce the background of the instrument. Here, we present the result obtained with the last CryoAC single-pixel prototype. It is based on a 1 cm2 silicon absorber sensed by a single 2mm x 1mm Ir/Au TES, featuring an on-chip heater for calibration and diagnostic purposes. We have illuminated the sample with 55Fe (6 keV line) and 241Am (60 keV line) radioactive sources, thus studying the detector response and the heater calibration accuracy at low energy. Furthermore, we have operated the sample in combination with a past-generation CryoAC prototype. Here, by analyzing the coincident detections between the two detectors, we have been able to characterize the background spectrum of the laboratory environment and disentangle the primary (i.e. cosmic muons) and secondaries (mostly secondary photons and electrons) signatures in the spectral shape.
Accepted for publication in the Journal of Low Temperature Physics for LTD-20 special issue
References in corpus (4)
- Review of the particle background of the Athena X-IFU instrument
- ATHENA X-IFU Demonstration Model: First joint operation of the main TES Array and its Cryogenic AntiCoincidence Detector (CryoAC)
- The Demonstration Model of the ATHENA X-IFU Cryogenic AntiCoincidence Detector
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Cited by in corpus (3)
- Thermalization of a SQUID chip at cryogenic temperature: Thermal conductance measurement for GE 7031 Varnish Glue, Apiezon N Grease and Rubber Cement between 20 and 200 mK
- The end-to-end simulator of the ATHENA X-IFU Cryogenic AntiCoincidence detector (CryoAC)
- The TES-based Cryogenic AntiCoincidence Detector of ATHENA X-IFU: Validation of the thermal end-to-end simulator towards the updated Demonstration Model (DM 1.1)