3 research outputs found
RADES axion search results with a High-Temperature Superconducting cavity in an 11.7 T magnet
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 eV to 36.5699 eV, 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 g 6.2e-13 GeV and
g 1.54e-13 GeV with a 95% confidence level.Comment: 19 pages, 8 figure
RADES axion search results with a High-Temperature Superconducting cavity in an 11.7 T magnet
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 eV to 36.5699 eV, 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 g 6.2e-13 GeV and g 1.54e-13 with a 95% confidence level.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 eV to 36.5699 eV, 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 g 6.2e-13 GeV and g 1.54e-13 GeV with a 95% confidence level
A proposal for a low-frequency axion search in the 1–2 μ eV range and below with the babyIAXO magnet
In the near future BabyIAXO will be the most powerful axion helioscope, relying on a custom-made magnet of two bores of 70 cm diameter and 10 m long, with a total available magnetic volume of more than 7 m3. In this document, it proposes and describe the implementation of low-frequency axion haloscope setups suitable for operation inside the BabyIAXO magnet. The RADES proposal has a potential sensitivity to the axion-photon coupling ga down to values corresponding to the KSVZ model, in the (currently unexplored) mass range between 1 and 2 eV, after a total effective exposure of 440 days. This mass range is covered by the use of four differently dimensioned 5-meter-long cavities, equipped with a tuning mechanism based on inner turning plates. A setup like the one proposed will also allow an exploration of the same mass range for hidden photons coupled to photons. An additional complementary apparatus is proposed using LC circuits and exploring the low energy range (≈ 10−4 − 10−1 eV). The setup includes a cryostat and cooling system to cool down the BabyIAXO bore down to about 5 K, as well as an appropriate low-noise signal amplification and detection chain