Extended High-Mass Axion Search with an Auxetically Tuned Higher-Order-Mode Cavity
Abstract
Conventional high-mass axion haloscopes based on the TM010 mode lose detection volume as the resonant frequency increases. We report an extended axion search using a dielectric-restored TM020 cavity haloscope with symmetry-preserving auxetic tuning based on a single-degree-of-freedom mechanical architecture. Using a near-quantum-limited microwave receiver, we searched a frequency range of 4.98-5.07 GHz and exclude axion-photon couplings with sensitivity approaching the KSVZ benchmark. Together with two earlier searches, the present scans extend a multi-scan program based on this architecture, yielding nearly 300 MHz of contiguous high-mass axion coverage over 4.98-5.27 GHz, the first broad search reported with a single higher-order-mode haloscope. This work establishes higher-order-mode cavities as a practical, scalable route beyond the TM010 volume penalty.
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BibTeX
@misc{kim2026extended,
title = {{Extended High-Mass Axion Search with an Auxetically Tuned Higher-Order-Mode Cavity}},
author = {Jinsu Kim and Sungjae Bae and Junu Jeong and Younggeun Kim and Jihn E. Kim and Arjan F. van Loo and Yasunobu Nakamura and Seonjeong Oh and Taehyeon Seong and Yannis K. Semertzidis and Sergey Uchaikin and SungWoo Youn},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.09717},
eprint = {2609.09717},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.09717},
}
RIS
TY - UNPB
TI - Extended High-Mass Axion Search with an Auxetically Tuned Higher-Order-Mode Cavity
AU - Jinsu Kim
AU - Sungjae Bae
AU - Junu Jeong
AU - Younggeun Kim
AU - Jihn E. Kim
AU - Arjan F. van Loo
AU - Yasunobu Nakamura
AU - Seonjeong Oh
AU - Taehyeon Seong
AU - Yannis K. Semertzidis
AU - Sergey Uchaikin
AU - SungWoo Youn
PY - 2026
DA - 2026/09/09
PB - arXiv
DO - 10.48550/arxiv.2609.09717
UR - https://arxiv.org/abs/2609.09717
AB - Conventional high-mass axion haloscopes based on the TM_010 mode lose detection volume as the resonant frequency increases. We report an extended axion search using a dielectric-restored TM_020 cavity haloscope with symmetry-preserving auxetic tuning based on a single-degree-of-freedom mechanical architecture. Using a near-quantum-limited microwave receiver, we searched a frequency range of 4.98-5.07 GHz and exclude axion-photon couplings with sensitivity approaching the KSVZ benchmark. Together with two earlier searches, the present scans extend a multi-scan program based on this architecture, yielding nearly 300 MHz of contiguous high-mass axion coverage over 4.98-5.27 GHz, the first broad search reported with a single higher-order-mode haloscope. This work establishes higher-order-mode cavities as a practical, scalable route beyond the TM_010 volume penalty.
ER -