Design and Testing of Cryogenic Actuated Magnetic Shutter for Superconducting Quantum Sensors for SALER

The SALER experiment searches for BSM electroweak physics by measuring eV scale nuclear recoils from decaying short-lived isotopes with cryogenic quantum sensors. To achieve less than 10 eV FWHM resolution during measurement, these cryogenic sensors require magnetic shielding due to their susceptibility to magnetic interference. However, an external rare isotope ion beam needs to reach the cryogenic sensors once at operating temperature. To achieve this, we have designed and tested a pivoting magnetic shield. In this presentation, I will show our methodology, testing, and initial results.