Speaker
Description
The CUORE (Cryogenic Underground Observatory for Rare Events) experiment is a ton-scale detector $ ^{[1]} $, operating at a cryogenic temperature around 10 mK, searching for neutrinoless double-beta decay of $ ^{130}\rm{Te} $ and other rare events. It owns today's largest milli-Kelvin infrastructure in the world $ ^{[2]} $. We envision an upgrade of the CUORE cryostat in order to host the new CUPID (CUORE Upgrade with Particle IDentification) $ ^{[3,4]} $ array and read-out system $ ^{[5]} $. The former will account for about 1500 bolometers, each served by a light detector; the latter will consequently lead to ~3 times higher thermal load coming from the CUPID wiring with respect to CUORE.
In this poster the cryogenics upgrades will be mainly introduced, with a particular focus on the PT (Pulse Tube) system and wiring thermalizations enhancements.
We foresee further improvements dedicated to the abatement of the vibrational noise, which in turn will improve the achievable energy resolution of bolometers. Thanks to the experience provided by CUORE, we can clearly demonstrate the effectiveness of the active Pulse Tube noise cancellation technique $ ^{[6]} $, which will also be strengthened and applied in CUPID.
[1]: D. Q. Adams et al. (CUORE Collaboration). CUORE opens the door to tonne-scale cryogenics experiments. Progress in Particle and Nuclear Physics 122, 103902 (2022).
[2]: A. D’Addabbo et al.. The CUORE Cryostat. J. Low Temp. Phys. 193, 867–875 (2018).
[3]: CUPID Collaboration, CUPID: CUORE (Cryogenic Underground Observatory for Rare Events) Upgrade with Particle IDentification arXiv:1504.04599
[4]: CUPID Collaboration, Optimization of the first CUPID detector module arXiv:2202.06279
[5]: CUPID Collaboration, Toward CUPID-1T arXiv:2203.08386
[6]: V. Dompè, C. Bucci, L. Canonica, A. D’Addabbo, S. Di Domizio, G. Fantini, P. Gorla, L. Marini, A. Nucciotti, I. Nutini, C. Rusconi, B. Schmidt, B. Welliver. The CUORE Pulse Tube Noise Cancellation Technique. J. Low Temp. Phys. 200, 286–294 (2020).
| Collaboration | CUORE / CUPID |
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