Simulation of TES X-ray Microcalorimeters Designed for 14.4 keV Solar Axion Search

Shohei Mori; Y. Nishida; N. Iyomoto; Y. Yagi; R. Konno; T. Hayashi; K. Tanaka; N. Y. Yamasaki; K. Mitsuda; R. Sato; M. Saito; T. Homma

doi:10.1007/s10909-022-02902-w

Simulation of TES X-ray Microcalorimeters Designed for 14.4 keV Solar Axion Search

Shohei Mori^*, Y. Nishida, N. Iyomoto, Y. Yagi, R. Konno, T. Hayashi, K. Tanaka, N. Y. Yamasaki, K. Mitsuda, R. Sato, M. Saito, T. Homma

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

This study attempted to develop detection methods for solar axions using transition-edge-sensor (TES) microcalorimeters. Since the axion absorber comprised of iron-57 (⁵⁷Fe) is electroplated upon the membrane instead of directly onto the TES itself (with the absorber hence thermally connected to the TES via a gold thermal strap), some of the heat deposited into the absorber consequently escapes into the heat bath through the membrane before being detected by the TES. If the heat-loss depends upon the axion interaction position within the absorber, position dependence may degrade the energy resolution. Therefore, this study endeavored to evaluate the dependence of heat-loss and pulse shape on axion incident position with the COMSOL Multiphysics software package (using a finite element method). In addition, heat-loss and pulse shape were likewise evaluated when the energy was deposited directly within the gold thermal strap.

Original language	English
Pages (from-to)	518-524
Number of pages	7
Journal	Journal of Low Temperature Physics
Volume	209
Issue number	3-4
DOIs	https://doi.org/10.1007/s10909-022-02902-w
Publication status	Published - 2022 Nov

Keywords

COMSOL
Microcalorimeters
Sensors
Solar axions
TES

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1007/s10909-022-02902-w

Cite this

@article{6ea1e41c272b4ee2ae6235014151d979,

title = "Simulation of TES X-ray Microcalorimeters Designed for 14.4 keV Solar Axion Search",

abstract = "This study attempted to develop detection methods for solar axions using transition-edge-sensor (TES) microcalorimeters. Since the axion absorber comprised of iron-57 (57Fe) is electroplated upon the membrane instead of directly onto the TES itself (with the absorber hence thermally connected to the TES via a gold thermal strap), some of the heat deposited into the absorber consequently escapes into the heat bath through the membrane before being detected by the TES. If the heat-loss depends upon the axion interaction position within the absorber, position dependence may degrade the energy resolution. Therefore, this study endeavored to evaluate the dependence of heat-loss and pulse shape on axion incident position with the COMSOL Multiphysics software package (using a finite element method). In addition, heat-loss and pulse shape were likewise evaluated when the energy was deposited directly within the gold thermal strap.",

keywords = "COMSOL, Microcalorimeters, Sensors, Solar axions, TES",

author = "Shohei Mori and Y. Nishida and N. Iyomoto and Y. Yagi and R. Konno and T. Hayashi and K. Tanaka and Yamasaki, {N. Y.} and K. Mitsuda and R. Sato and M. Saito and T. Homma",

note = "Funding Information: This work was supported by JSPS KAKENHI Grant Number 21H03738. Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2022",

month = nov,

doi = "10.1007/s10909-022-02902-w",

language = "English",

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journal = "Journal of Low Temperature Physics",

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TY - JOUR

T1 - Simulation of TES X-ray Microcalorimeters Designed for 14.4 keV Solar Axion Search

AU - Mori, Shohei

AU - Nishida, Y.

AU - Iyomoto, N.

AU - Yagi, Y.

AU - Konno, R.

AU - Hayashi, T.

AU - Tanaka, K.

AU - Yamasaki, N. Y.

AU - Mitsuda, K.

AU - Sato, R.

AU - Saito, M.

AU - Homma, T.

N1 - Funding Information: This work was supported by JSPS KAKENHI Grant Number 21H03738. Publisher Copyright: © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

PY - 2022/11

Y1 - 2022/11

N2 - This study attempted to develop detection methods for solar axions using transition-edge-sensor (TES) microcalorimeters. Since the axion absorber comprised of iron-57 (57Fe) is electroplated upon the membrane instead of directly onto the TES itself (with the absorber hence thermally connected to the TES via a gold thermal strap), some of the heat deposited into the absorber consequently escapes into the heat bath through the membrane before being detected by the TES. If the heat-loss depends upon the axion interaction position within the absorber, position dependence may degrade the energy resolution. Therefore, this study endeavored to evaluate the dependence of heat-loss and pulse shape on axion incident position with the COMSOL Multiphysics software package (using a finite element method). In addition, heat-loss and pulse shape were likewise evaluated when the energy was deposited directly within the gold thermal strap.

AB - This study attempted to develop detection methods for solar axions using transition-edge-sensor (TES) microcalorimeters. Since the axion absorber comprised of iron-57 (57Fe) is electroplated upon the membrane instead of directly onto the TES itself (with the absorber hence thermally connected to the TES via a gold thermal strap), some of the heat deposited into the absorber consequently escapes into the heat bath through the membrane before being detected by the TES. If the heat-loss depends upon the axion interaction position within the absorber, position dependence may degrade the energy resolution. Therefore, this study endeavored to evaluate the dependence of heat-loss and pulse shape on axion incident position with the COMSOL Multiphysics software package (using a finite element method). In addition, heat-loss and pulse shape were likewise evaluated when the energy was deposited directly within the gold thermal strap.

KW - COMSOL

KW - Microcalorimeters

KW - Sensors

KW - Solar axions

KW - TES

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