Low-Frequency Noise Performance of Microstrip-Coupled Lumped-Element Aluminum KIDs using Hydrogenated Amorphous Silicon Parallel-Plate Capacitors for NEW-MUSIC
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866914152939782144 |
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| author | Hempel-Costello, Simon Beyer, Andrew D. Cunnane, Dan Day, Peter K. Defrance, Fabien Frez, Cliff Gavidia, Adriana Golwala, Sunil R. Kim, Junhan Martin, Jean-Marc Sadou, Yann Sayers, Jack Shu, Shibo Yu, Shiling |
| author_facet | Hempel-Costello, Simon Beyer, Andrew D. Cunnane, Dan Day, Peter K. Defrance, Fabien Frez, Cliff Gavidia, Adriana Golwala, Sunil R. Kim, Junhan Martin, Jean-Marc Sadou, Yann Sayers, Jack Shu, Shibo Yu, Shiling |
| contents | We present measurements of the low-frequency noise of microstrip-coupled, lumped-element aluminum kinetic inductance detectors that use hydrogenated amorphous silicon parallel-plate capacitors (Al/a-Si:H MS-PPC-LEKIDs), which are under development for the Next-generation Extended Wavelength Multiband Submillimeter Inductance Camera (NEW-MUSIC). We show that, under dark conditions, these devices are generation recombination (GR) noise dominated down to 0.1 Hz and, under optical load, they are likely dominated by GR and photon noise down to tenths of a Hz and possibly lower, both in spite of the use of a-Si:H PPCs. Our measurements set limits on the low-frequency two-level-system (TLS) noise of the a-Si:H material that are consistent with higher frequency measurements in the 0.1-10 kHz regime. These results establish that our MS-PPC-LEKID design for NEW-MUSIC will be photon-noise-limited under a range of observing conditions and, more generally, that a-Si:H PPC-KIDs are a viable new detector technology for even low modulation-rate applications such as astronomy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_08898 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Low-Frequency Noise Performance of Microstrip-Coupled Lumped-Element Aluminum KIDs using Hydrogenated Amorphous Silicon Parallel-Plate Capacitors for NEW-MUSIC Hempel-Costello, Simon Beyer, Andrew D. Cunnane, Dan Day, Peter K. Defrance, Fabien Frez, Cliff Gavidia, Adriana Golwala, Sunil R. Kim, Junhan Martin, Jean-Marc Sadou, Yann Sayers, Jack Shu, Shibo Yu, Shiling Instrumentation and Methods for Astrophysics We present measurements of the low-frequency noise of microstrip-coupled, lumped-element aluminum kinetic inductance detectors that use hydrogenated amorphous silicon parallel-plate capacitors (Al/a-Si:H MS-PPC-LEKIDs), which are under development for the Next-generation Extended Wavelength Multiband Submillimeter Inductance Camera (NEW-MUSIC). We show that, under dark conditions, these devices are generation recombination (GR) noise dominated down to 0.1 Hz and, under optical load, they are likely dominated by GR and photon noise down to tenths of a Hz and possibly lower, both in spite of the use of a-Si:H PPCs. Our measurements set limits on the low-frequency two-level-system (TLS) noise of the a-Si:H material that are consistent with higher frequency measurements in the 0.1-10 kHz regime. These results establish that our MS-PPC-LEKID design for NEW-MUSIC will be photon-noise-limited under a range of observing conditions and, more generally, that a-Si:H PPC-KIDs are a viable new detector technology for even low modulation-rate applications such as astronomy. |
| title | Low-Frequency Noise Performance of Microstrip-Coupled Lumped-Element Aluminum KIDs using Hydrogenated Amorphous Silicon Parallel-Plate Capacitors for NEW-MUSIC |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2511.08898 |