Title of article
Observation of very fast response signals from Pb absorber coupled transition edge sensor gamma-ray microcalorimeter
Author/Authors
Damayanthi، نويسنده , , R.M.T. and Ohno، نويسنده , , Lisa M. and Hatakeyama، نويسنده , , S. and Takahashi، نويسنده , , H. and Maehata، نويسنده , , K. and Yasumune، نويسنده , , T. and Iyomoto، نويسنده , , N.، نويسنده ,
Pages
4
From page
30
To page
33
Abstract
We are developing a gamma-ray microcalorimeter for Positron Annihilation Spectroscopy. Our detector composed of a transition edge sensor (TES) thermometer and an epoxy coupled bulk Pb absorber has been reported an energy resolution of 4.7 keV FWHM at 662 keV with a tens of milliseconds long response time. To enhance the detector properties, we designed a new attachment method in the focus of improving the thermal coupling between the absorber and the TES. In the new design, we created epoxy-posts both on the TES film and on the absorber, and then they were connected together using an epoxy-dot put on the epoxy-post on the absorber. Measured current signal of this epoxy-post TES gamma-ray detector showed an ultra fast response with 80 μs fall time.
Keywords
Gamma-ray spectroscopy , Pb absorber , Transition edge sensor , Epoxy-post
Journal title
Astroparticle Physics
Record number
2019727
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