Noise Reduction in Superconducting Sensor Measurements for SALER

The Superconducting Array for Low Energy Radiation (SALER) experiment uses superconducting tunnel junction (STJ) radiation detectors coupled to the ReA3 beamline at FRIB to search for BSM physics, initially targeting scalar and tensor current contributions to the weak force on the TeV scale. We do this by measuring the nuclear recoil spectra from the weak decay of short-lived implanted nuclei on the eV-scale. To achieve precision STJ measurements requires the implementation of magnetic shielding and infrared blocking to mitigate heat and magnetic field effects on the detectors. In this talk, I will present the design, testing, and operation results from our work on magnetic shielding and thermal windows for SALER towards improving STJ performance to ~2eV resolution at FRIB.