Development of a New TES Structure Using a Radiation Absorber Self-Adjusting the Operating Temperature

We propose a new structure of a TES and a series connection of radiation absorber, which can stabilize the absorber temperature through a negative feedback process in the absorber. We consider that this structure of the self-heating absorber might allow TES to improve detection efficiency with large...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2009-06, Vol.19 (3), p.473-476
Main Authors: Ohno, M., Takahashi, H., Nishimura, K., Minamikawa, Y., Damayanthi, R., Sato, H., Otani, C., Toyokawa, H., Tanida, H., Uruga, T.
Format: Article
Language:English
Subjects:
Applied sciences
Cooling
Cryogenic detectors
Design. Technologies. Operation analysis. Testing
Devices
Electrical engineering. Electrical power engineering
Electromagnets
Electronics
Energy resolution
Exact sciences and technology
Fluorescence
General equipment and techniques
Gold
Heating
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Integrated circuits
Joule heating
Negative feedback
Operating temperature
Optoelectronic and photonic sensors
Optoelectronic devices
Physics
Pixels
Reduction
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Sensors
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
Superconducting films
superconducting radiation detectors
Superconductors
Temperature sensors
Thermal sensors
Various equipment and components
X-ray spectroscopy
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Description
Summary:We propose a new structure of a TES and a series connection of radiation absorber, which can stabilize the absorber temperature through a negative feedback process in the absorber. We consider that this structure of the self-heating absorber might allow TES to improve detection efficiency with large effective area and high count rate by the cooling power inside the absorber. The 150 mum times 150 mum gold film absorber and the 25 mum times 25 mum heat sensor made by Iridium/Gold bi-layer superconductor which has a Tc of 110 mK are biased in series. In this device the gold film absorber generates the self Joule heating to a certain extent to maintain the temperature of the TES pixel. By the photon incidence to the gold film absorber, thermalization of the heat sensor induces the large current reduction, then the current through the gold film absorber also reduces, therefore the gold film absorber is expected to be cooled rapidly by the reduction of joule heating power. This TES pixel achieves the energy resolution of 34 eV (FWHM) @ 5.9 keV and the time decay constant of 150 mus. Furthermore, we tried to perform the experiment of X-ray fluorescence analysis in the SPring-8 synchrotron facility. This TES pixel succeeded to resolve into the energy peaks derived from the material elements which contained in a stainless steel sample.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2009.2019566