English

The Cryogenic System of DMRadio-50L

Instrumentation and Detectors 2026-07-07 v1
Authors: V. Ankel , C. Bartram , J. Begin , C. Bell , S. Chaudhuri , H. -M. Cho , J. Corbin , W. Craddock , S. Cuadra , A. Droster , J. Echevers , E. Engelhardt , J. T. Fry , J. Fu , K. D. Irwin , A. Keller , R. Kolevatov , A. Kunder , D. Li , M. Marangola , N. Otto , K. M. W. Pappas , E. Pariset , S. Puranam , P. Quassolo , N. M. Rapidis , C. P. Salemi , M. Simanovskaia , J. Singh , P. Stark , E. C. van Assendelft , K. van Bibber , K. J. Vetter , K. Wells , J. Wiedemann , L. Winslow , D. Wright , A. K. Yi , B. F. Zemenu
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Abstract

The DMRadio-50L experiment is designed to search for axion dark matter in the 5 kHz - 5 MHz frequency range using a lumped-element LC resonator and a toroidal magnet and to serve as a testbed for quantum sensors. This paper describes the custom cryogenic system developed to meet the stringent requirements of the experiment within a standard laboratory environment. The system is designed to cool a 200 kg detector assembly to temperatures as low as 50 mK while providing sufficient cooling power at multiple temperature stages. We present the conceptual design, technical implementation, and measured performance of the hybrid cryogenic system, which combines a horizontal dilution refrigerator with a large vertical payload cryostat.

Keywords

cryogenic system dilution refrigerator axion dark matter DMRadio low temperature detector

Cite

@article{arxiv.2607.05771,
  title  = {The Cryogenic System of DMRadio-50L},
  author = {V. Ankel and C. Bartram and J. Begin and C. Bell and S. Chaudhuri and H. -M. Cho and J. Corbin and W. Craddock and S. Cuadra and A. Droster and J. Echevers and E. Engelhardt and J. T. Fry and J. Fu and K. D. Irwin and A. Keller and R. Kolevatov and A. Kunder and D. Li and M. Marangola and N. Otto and K. M. W. Pappas and E. Pariset and S. Puranam and P. Quassolo and N. M. Rapidis and C. P. Salemi and M. Simanovskaia and J. Singh and P. Stark and E. C. van Assendelft and K. van Bibber and K. J. Vetter and K. Wells and J. Wiedemann and L. Winslow and D. Wright and A. K. Yi and B. F. Zemenu},
  journal= {arXiv preprint arXiv:2607.05771},
  year   = {2026}
}