Abstract
For the future satellite mission at the second sun–earth Lagrangian point (L2), we need to mitigate phonon propagation created by cosmic rays to superconducting detectors. We simulate phonon propagation in silicon substrate and show that putting a metal layer on the substrate or making hole in the substrate reduces the propagation. We also show a function which shows the response of a TES bolometer on a substrate. To validate these theoretical expectations, we make irradiation tests using two types of superconducting detectors: transition edge sensor bolometers and kinetic inductance detectors. From the tests, we show that putting metal can reduce correlations between detectors and number of hit events from charged particles.
Original language | English |
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Pages (from-to) | 118-129 |
Number of pages | 12 |
Journal | Journal of Low Temperature Physics |
Volume | 199 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Apr 1 2020 |
Externally published | Yes |
Keywords
- Cosmic microwave background
- Kinetic inductance detectors
- Phonon
- Transition edge sensors
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Condensed Matter Physics