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Mitigation of Finite Bandwidth Effects in Time-Division-Multiplexed SQUID Readout of TES Arrays
- Source :
- IEEE Transactions on Applied Superconductivity. 31(5)
- Publication Year :
- 2021
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 2021.
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Abstract
- Time division multiplexing (TDM) is being developed as the readout technology of the X-ray integral field unit (X-IFU), a 3,168-pixel X-ray transition-edge sensor (TES) imaging spectrometer that is part of the European Space Agency's Athena satellite mission. Recent improvements in the low X-ray event count rate performance of TDM have been driven by increases in multiplexer bandwidth and the mitigation of settling transients. These methods and design changes have improved the 32-row multiplexed resolution of a NASA LPA 2.5a array from an initial (2.73 ± 0.03) eV to (1.97 ± 0.01) eV resolution at 5.9 keV. We discuss these recent advances in TDM readout, which have been implemented in an 8-column × 32-row spectrometer that will be deployed at the Lawrence Livermore National Laboratory electron beam ion trap (EBIT) facility, and present a model that will inform the design of future systems.
- Subjects :
- Electronics And Electrical Engineering
Subjects
Details
- Language :
- English
- ISSN :
- 15582515 and 10518223
- Volume :
- 31
- Issue :
- 5
- Database :
- NASA Technical Reports
- Journal :
- IEEE Transactions on Applied Superconductivity
- Notes :
- 244904, , 80GSFC17C0003, , 80GSFC17M0002
- Publication Type :
- Report
- Accession number :
- edsnas.20210010976
- Document Type :
- Report
- Full Text :
- https://doi.org/10.1109/TASC.2021.3065279