TY - JOUR
T1 - Performance analyses of TES microcalorimeters with mushroom shaped X-ray absorbers made of Sn or Bi
AU - Ishisaki, Y.
AU - Morita, U.
AU - Koga, T.
AU - Shinozaki, K.
AU - Sato, K.
AU - Takai, N.
AU - Ohashi, T.
AU - Arakawa, T.
AU - Kudo, H.
AU - Sato, H.
AU - Kobayashi, H.
AU - Izumi, T.
AU - Ohtsuka, S.
AU - Mori, K.
AU - Shoji, S.
AU - Osaka, T.
AU - Homma, T.
AU - Mitsuda, K.
AU - Yamasaki, N. Y.
AU - Fujimoto, R.
AU - Iyomoto, N.
AU - Oshima, T.
AU - Futamoto, K.
AU - Takei, Y.
AU - Ichitsubo, T.
AU - Fujimori, T.
AU - Yoshida, K.
AU - Kuroda, Y.
AU - Onishi, M.
AU - Goto, M.
AU - Beppu, F.
N1 - Funding Information:
A part of this work was supported by KAKENHI 13440079, 14204017, 14079103, and “Nanotechnology Support Project” of MEXT Japan.
PY - 2004/3/11
Y1 - 2004/3/11
N2 - Performance of microcalorimeters with a Ti/Au transition-edge sensor (TES) and an electrodeposited absorber has been investigated. The absorbers are in a mushroom-shape made of Sn or Bi. With an Sn absorber we observed a long time scale component of 1.8 ms for X-ray pulses, which is due presumably to recombination of quasiparticles into phonons. As a result, the energy resolution is not good with the Sn absorber. Better energy resolution of 28±1 eV was obtained with an incomplete-shaped Bi absorber, although the long component was also seen with smaller level. A calorimeter with only a neck of the Au seed layer for the electrodeposition had the best energy resolution of 6.3±0.4 eV in spite of saturated pulses and relatively high transition temperature of 210 mK.
AB - Performance of microcalorimeters with a Ti/Au transition-edge sensor (TES) and an electrodeposited absorber has been investigated. The absorbers are in a mushroom-shape made of Sn or Bi. With an Sn absorber we observed a long time scale component of 1.8 ms for X-ray pulses, which is due presumably to recombination of quasiparticles into phonons. As a result, the energy resolution is not good with the Sn absorber. Better energy resolution of 28±1 eV was obtained with an incomplete-shaped Bi absorber, although the long component was also seen with smaller level. A calorimeter with only a neck of the Au seed layer for the electrodeposition had the best energy resolution of 6.3±0.4 eV in spite of saturated pulses and relatively high transition temperature of 210 mK.
KW - Microcalorimeter
KW - Transition edge sensor
KW - X-ray detectors
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U2 - 10.1016/j.nima.2003.11.370
DO - 10.1016/j.nima.2003.11.370
M3 - Article
AN - SCOPUS:12144291663
SN - 0168-9002
VL - 520
SP - 452
EP - 455
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1-3
ER -