Low-Frequency Vibrational Noise Studies for the CUORE and CUPID Experiments

Cryogenic calorimeter detectors used to search for rare processes such as neutrinoless double beta decay (0𝜈𝛽𝛽) are sensitive to low frequency vibrational noise. The CUORE (Cryogenic Underground Observatory for Rare Events) Experiment currently utilizes cryogenic calorimeters to search for 0𝜈𝛽𝛽 in 130Te. CUPID (CUORE Upgrade with Particle Identification), a planned upgrade to CUORE, plans to improve the sensitivity to 0𝜈𝛽𝛽 by utilizing 100Mo. CUORE currently uses multiple methods of active noise cancellation to reduce the effect of low frequency vibrational noise, but the noise persists and degrades detector performance. Multiple forms of external noise sensors (accelerometers, seismometers, antennas, microphones) are used to computationally denoise the calorimetric signals which detect the energy of individual decay events. Recent studies show that there could be improvements to the existing computational denoising by including new noise sensors, namely cryogenic accelerometers to more directly detect the noise environment of the calorimeters. This talk will discuss current efforts of noise removal and the future prospects of vibrational noise reduction for the CUORE and CUPID experiments.