Operation of transition-edge sensors with excess thermal noise

I.J. Maasilta (Corresponding Author), K.M. Kinnunen, A.K. Nuottajärvi, J. Leppäniemi, Arttu Luukanen

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

The superconducting transition-edge sensor (TES) is currently one of the most attractive choices for ultra-high resolution calorimetry in the keV x-ray band, and is being considered for future ESA and NASA missions. We have performed a study on the noise characteristics of Au/Ti bilayer TESs, at operating temperatures around ~100 mK, with the SQUID readout at 1.5 K. Experimental results indicate that without modifications the back-action noise from the SQUID chip degrades the noise characteristics significantly. We present a simple and effective solution to the problem: by installing an extra shunt resistor which absorbs the excess radiation from the SQUID input, we have reduced the excess thermal (photon) noise power down by approximately a factor of five, allowing high resolution operation of the sensors.
Original languageEnglish
Pages (from-to)S242-S245
Number of pages4
JournalSuperconductor Science and Technology
Volume19
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

Thermal noise
SQUIDs
thermal noise
sensors
Sensors
Calorimetry
Resistors
NASA
high resolution
shunts
Photons
operating temperature
European Space Agency
resistors
installing
readout
Radiation
X rays
heat measurement
chips

Keywords

  • transition edge sensors
  • calorimeters
  • SQUID
  • superconducting microwave devices
  • superconducting transistors

Cite this

Maasilta, I. J., Kinnunen, K. M., Nuottajärvi, A. K., Leppäniemi, J., & Luukanen, A. (2006). Operation of transition-edge sensors with excess thermal noise. Superconductor Science and Technology, 19, S242-S245. https://doi.org/10.1088/0953-2048/19/5/S16
Maasilta, I.J. ; Kinnunen, K.M. ; Nuottajärvi, A.K. ; Leppäniemi, J. ; Luukanen, Arttu. / Operation of transition-edge sensors with excess thermal noise. In: Superconductor Science and Technology. 2006 ; Vol. 19. pp. S242-S245.
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Maasilta, IJ, Kinnunen, KM, Nuottajärvi, AK, Leppäniemi, J & Luukanen, A 2006, 'Operation of transition-edge sensors with excess thermal noise', Superconductor Science and Technology, vol. 19, pp. S242-S245. https://doi.org/10.1088/0953-2048/19/5/S16

Operation of transition-edge sensors with excess thermal noise. / Maasilta, I.J. (Corresponding Author); Kinnunen, K.M.; Nuottajärvi, A.K.; Leppäniemi, J.; Luukanen, Arttu.

In: Superconductor Science and Technology, Vol. 19, 2006, p. S242-S245.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Operation of transition-edge sensors with excess thermal noise

AU - Maasilta, I.J.

AU - Kinnunen, K.M.

AU - Nuottajärvi, A.K.

AU - Leppäniemi, J.

AU - Luukanen, Arttu

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AB - The superconducting transition-edge sensor (TES) is currently one of the most attractive choices for ultra-high resolution calorimetry in the keV x-ray band, and is being considered for future ESA and NASA missions. We have performed a study on the noise characteristics of Au/Ti bilayer TESs, at operating temperatures around ~100 mK, with the SQUID readout at 1.5 K. Experimental results indicate that without modifications the back-action noise from the SQUID chip degrades the noise characteristics significantly. We present a simple and effective solution to the problem: by installing an extra shunt resistor which absorbs the excess radiation from the SQUID input, we have reduced the excess thermal (photon) noise power down by approximately a factor of five, allowing high resolution operation of the sensors.

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KW - superconducting microwave devices

KW - superconducting transistors

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DO - 10.1088/0953-2048/19/5/S16

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