Performance of an X-ray single pixel TES microcalorimeter under DC and AC biasing
- SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584CA, Utrecht (Netherlands)
- Instituto de Ciencia de Materiales de Aragon CSIC-Universidad de Zaragoza Facultad de Ciencias 50009 Zaragoza SPAIN (Spain)
- ISAS-Jaxa (Japan)
We are developing Frequency Domain Multiplexing (FDM) for the read-out of TES imaging microcalorimeter arrays for future X-ray missions like IXO. In the FDM configuration the TES is AC voltage biased at a well defined frequencies (between 0.3 to 10 MHz) and acts as an AM modulating element. In this paper we will present a full comparison of the performance of a TES microcalorimeter under DC bias and AC bias at a frequency of 370 kHz. In both cases we measured the current-to-voltage characteristics, the complex impedance, the noise, the X-ray responsivity, and energy resolution. The behaviour is very similar in both cases, but deviations in performances are observed for detector working points low in the superconducting transition (R/R{sub N}<0.5). The measured energy resolution at 5.89 keV is 2.7 eV for DC bias and 3.7 eV for AC bias, while the baseline resolution is 2.8 eV and 3.3 eV, respectively.
- OSTI ID:
- 21325815
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1185; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALTERNATING CURRENT
BOLOMETERS
CALORIMETERS
COMPARATIVE EVALUATIONS
CRYOGENICS
DIRECT CURRENT
ELECTRIC POTENTIAL
ENERGY RESOLUTION
EV RANGE
IMPEDANCE
KEV RANGE
KHZ RANGE
MHZ RANGE
NOISE
PERFORMANCE
RADIATION DETECTORS
READOUT SYSTEMS
SUPERCONDUCTING DEVICES
X RADIATION
X-RAY DETECTION