Abstract
SRON is developing X-ray transition edge sensor (TES) calorimeters arrays, as a backup technology for X-IFU instrument on the ATHENA space observatory. These detectors are based on a superconducting TiAu bilayer TES with critical temperature of 100 mK on a 1 μm thick SiN membrane with Au or Au/Bi absorbers. Number of devices have been fabricated and measured using a Frequency Division Multiplexing (FDM) readout system with 1-5 MHz bias frequencies. We measured IV curves, critical temperature, thermal conductance, noise and also X-ray energy resolution at number of selected bias points. So far our best calorimeter shows 3.9 eV X-ray resolution at 6 keV. Here we present a summary of our results and the latest status of development of X-ray calorimeters at SRON.
Original language | English |
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Title of host publication | Proceedings of SPIE : Space Telescopes and Instrumentation 2018 |
Subtitle of host publication | Ultraviolet to Gamma Ray |
Editors | S. Nikzad, J.-W.A. Herder, den, K. Nakazawa |
Publisher | SPIE |
Volume | 10699 |
ISBN (Print) | 9781510619517 |
DOIs | |
Publication status | Published - 2018 |
Event | SPIE astronomical telescopes and instrumentation 2018 - Austin, United States Duration: 10 Jun 2018 → 15 Jun 2018 |
Conference
Conference | SPIE astronomical telescopes and instrumentation 2018 |
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Country/Territory | United States |
City | Austin |
Period | 10/06/18 → 15/06/18 |
Keywords
- ATHENA
- calorimeters
- SiN membrane
- TES arrays
- transition edge sensor
- X-IFU
- X-ray spectrometer