A new X-ray microcalorimeter based on a pixelated TES array

We are developing a new x-ray microcalorimeter based on superconducting transition edge sensors (TES) as an imaging sensor. This device has ten pixelated transition edge sensors with Iridium superconductive films. When a constant bias voltage is applied to all pixels, each pixel is operated at sligh...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2003-06, Vol.13 (2), p.653-656
Main Authors: Fukuda, D., Ohno, M., Takahashi, H., Kunieda, Y., Inou, T., Ohkubo, M., Ataka, M., Nakazawa, M.
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Calorimetry
Electronics
Energy resolution
Exact sciences and technology
Image sensors
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Optical imaging
Physics
Prototypes
Radiocommunications
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Shape
Superconducting devices
Superconducting films
Superconductivity
Telecommunications
Telecommunications and information theory
Temperature sensors
Testing, measurement, noise and reliability
Thermal instruments, apparatus and techniques
Voltage
X-ray imaging
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Summary:We are developing a new x-ray microcalorimeter based on superconducting transition edge sensors (TES) as an imaging sensor. This device has ten pixelated transition edge sensors with Iridium superconductive films. When a constant bias voltage is applied to all pixels, each pixel is operated at slightly different equilibrium temperature. This arises from the different thermal responses between pixels, so that response signal shapes would vary according to the position of the incident x-ray. We have fabricated a prototype of the pixelated array and examined its performance. The position dependency measurements by scanning the collimated x-ray over the device have successfully shown that the device is able to resolve its pixel position. The energy resolution of a test device was 13.1 eV (FWHM) for 3 keV x-rays.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2003.813986