Performance of a bridge-type TES microcalorimeter, excess noise characteristics and dependence of sensitivity on current

Y. Takei, K. Tanaka, R. Fujimoto, Y. Ishisaki, U. Morita, T. Morooka, T. Oshima, K. Futamoto, T. Hiroike, T. Koga, K. Mitsuda, T. Ohashi, N. Y. Yamasaki, Naoko Iyomoto, T. Ichitsubo, K. Sato, T. Fujimori, K. Shinozaki, S. Nakayama, K. Chinone

Research output: Contribution to journalArticle

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Abstract

Fully utilizing the benefit of strong electrothermal feedback, we achieved the energy resolution of 6.6 eV (FWHM) at 5.9 keV and a fast response time of 74 μs with our bridge-type Ti/Au transition-edge sensor (TES) microcalorimeter. The energy resolution of this device was limited by a noise that was larger than the intrinsic noise and the readout noise. This noise only appeared when the current through the TES was large (≳10 μA), and its level, defined as a fluctuation amplitude of the current through the TES, was in proportion to the inverse of the TES resistance. We also found that the TES sensitivity depended on the current through the TES, normalized with the critical current of the TES. When the current exceeded about 1% of the critical current, the TES sensitivity was significantly degraded. The critical current clearly correlated with the TES sensitivity, and hence the signal-to-noise ratio at the optimal operating point, among devices with different TES size and thickness. Thus, the critical current is one of the key parameters to determine the performance of the TES microcalorimeter.

Original languageEnglish
Pages (from-to)134-146
Number of pages13
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume523
Issue number1-2
DOIs
Publication statusPublished - May 1 2004

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calorimeters
sensitivity
sensors
Sensors
Critical currents
critical current
Full width at half maximum
readout
Signal to noise ratio
proportion
signal to noise ratios
Feedback
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Performance of a bridge-type TES microcalorimeter, excess noise characteristics and dependence of sensitivity on current. / Takei, Y.; Tanaka, K.; Fujimoto, R.; Ishisaki, Y.; Morita, U.; Morooka, T.; Oshima, T.; Futamoto, K.; Hiroike, T.; Koga, T.; Mitsuda, K.; Ohashi, T.; Yamasaki, N. Y.; Iyomoto, Naoko; Ichitsubo, T.; Sato, K.; Fujimori, T.; Shinozaki, K.; Nakayama, S.; Chinone, K.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 523, No. 1-2, 01.05.2004, p. 134-146.

Research output: Contribution to journalArticle

Takei, Y, Tanaka, K, Fujimoto, R, Ishisaki, Y, Morita, U, Morooka, T, Oshima, T, Futamoto, K, Hiroike, T, Koga, T, Mitsuda, K, Ohashi, T, Yamasaki, NY, Iyomoto, N, Ichitsubo, T, Sato, K, Fujimori, T, Shinozaki, K, Nakayama, S & Chinone, K 2004, 'Performance of a bridge-type TES microcalorimeter, excess noise characteristics and dependence of sensitivity on current', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 523, no. 1-2, pp. 134-146. https://doi.org/10.1016/j.nima.2003.12.025
Takei, Y. ; Tanaka, K. ; Fujimoto, R. ; Ishisaki, Y. ; Morita, U. ; Morooka, T. ; Oshima, T. ; Futamoto, K. ; Hiroike, T. ; Koga, T. ; Mitsuda, K. ; Ohashi, T. ; Yamasaki, N. Y. ; Iyomoto, Naoko ; Ichitsubo, T. ; Sato, K. ; Fujimori, T. ; Shinozaki, K. ; Nakayama, S. ; Chinone, K. / Performance of a bridge-type TES microcalorimeter, excess noise characteristics and dependence of sensitivity on current. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2004 ; Vol. 523, No. 1-2. pp. 134-146.
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