Evaluation of 256-pixel TES microcalorimeter arrays with electrodeposited Bi absorbers

U. Morita*, Y. Yamakawa, T. Fujimori, Y. Ishisaki, T. Ohashi, Y. Takei, K. Yoshida, T. Yoshino, K. Mitsuda, N. Y. Yamasaki, R. Fujimoto, H. Sato, Y. Minoura, N. Takahashi, T. Homma, S. Shoji, Y. Kuroda, M. Onishi


研究成果: Article査読

8 被引用数 (Scopus)


We succeeded in fabricating 256-pixel arrays of Ti/Au transition edge sensor (TES) microcalorimeters with electrodeposited microabsorbers made of Bi, and report on their test results. We confirmed all pixels tested so far were alive, however most of the microabsorbers were stripped off during cooling cycles. We investigated some pixels by irradiating with 5.9 keV X-rays, and confirmed that they actually worked as microcalorimeters. The X-ray pulses are represented by a sum of two components with different decay times. The ratio of the two components fluctuates from pulse to pulse, which limits the energy resolution to ∼ 200 eV. We discuss the pulse shape of two decay-time components considering thermal conductivities, i.e., inside microabsorbers, between microabsorbers and TES.

ジャーナルNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
出版ステータスPublished - 2006 4月 14

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 器械工学


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