RADES axion search results with a High-Temperature Superconducting cavity in an 11.7 T magnet

Mar 12, 2024
19 pages
e-Print:
Report number:
  • CERN-EP-2024-076,
  • MPP-2024-55

Citations per year

202320242025052
Abstract: (arXiv)
We describe the results of a haloscope axion search performed with an 11.7 T dipole magnet at CERN. The search used a custom-made radio-frequency cavity coated with high-temperature superconducting tape. A set of 27 h of data at a resonant frequency of around 8.84 GHz was analysed. In the range of axion mass 36.5676 μ\mueV to 36.5699 μ\mueV, corresponding to a width of 554 kHz, no signal excess hinting at an axion-like particle was found. Correspondingly, in this mass range, a limit on the axion to photon coupling-strength was set in the range between gaγ_{a\gamma}\gtrsim 6.2e-13 GeV1^{-1} and gaγ_{a\gamma}\gtrsim 1.54e-13 GeV1^{-1} with a 95% confidence level.
Note:
  • 19 pages, 8 figures
  • dark matter: direct detection
  • axion: mass
  • resonance: frequency
  • photon: coupling constant
  • axion: dark matter
  • cavity
  • superconductivity
  • CERN Lab
  • bending magnet
  • magnet