An energy-dependent electro-thermal response model of CUORE cryogenic calorimeter. (1st November 2022)

• Record Type: Journal Article
• Authors: Adams, D.Q.; Alduino, C.; Alfonso, K.; Avignone , F.T.; Azzolini, O.; Bari, G.; Bellini, F.; Benato, G.; Beretta, M.; Biassoni, M.; Branca, A.; Brofferio, C.; Bucci, C.; Camilleri, J.; Caminata, A.; Campani, A.; Canonica, L.; Cao, X.G.; Capelli, S.; Capelli, C.; Cappelli, L.; Cardani, L.; Carniti, P.; Casali, N.; Celi, E.; Chiesa, D.; Clemenza, M.; Copello, S.; Cremonesi, O.; Creswick, R.J.; D'Addabbo, A.; Dafinei, I.; Del Corso, F.; Dell'Oro, S.; Di Domizio, S.; Di Lorenzo, S.; Dompè, V.; Fang, D.Q.; Fantini, G.; Faverzani, M.; Ferri, E.; Ferroni, F.; Fiorini, E.; Franceschi, M.A.; Freedman, S.J.; Fu, S.H.; Fujikawa, B.K.; Ghislandi, S.; Giachero, A.; Gianvecchio, A.; Gironi, L.; Giuliani, A.; Gorla, P.; Gotti, C.; Gutierrez, T.D.; Han, K.; Hansen, E.V.; Heeger, K.M.; Huang, R.G.; Huang, H.Z.; Johnston, J.; Keppel, G.; Kolomensky, Yu.G.; Kowalski, R.; Li, M.; Liu, R.; Ma, L.; Ma, Y.G.; Marini, L.; Maruyama, R.H.; Mayer, D.; Mei, Y.; Morganti, S.; Napolitano, T.; Nastasi, M.; Nikkel, J.; Nones, C.; Norman, E.B.; Nucciotti, A.; Nutini, I.; O'Donnell, T.; Olmi, M.; Ouellet, J.L.; Pagan, S.; Pagliarone, C.E.; Pagnanini, L.; Pallavicini, M.; Pattavina, L.; Pavan, M.; Pessina, G.; Pettinacci, V.; Pira, C.; Pirro, S.; Pozzi, S.; Previtali, E.; Puiu, A.; Quitadamo, S.; Ressa, A.; Rosenfeld, C.; Sangiorgio, S.; Schmidt, B.; Scielzo, N.D.; Sharma, V.; Singh, V.; Sisti, M.; Speller, D.; Surukuchi, P.T.; Taffarello, L.; Terranova, F.; Tomei, C.; Vetter, K.J.; Vignati, M.; Wagaarachchi, S.L.; Wang, B.S.; Welliver, B.; Wilson, J.; Wilson, K.; Winslow, L.A.; Zimmermann, S.; Zucchelli, S.;
• Is Part Of: Journal of instrumentation. Volume 17:Number 11(2022)
• Publication Date: 2022-11-01
• Subjects: Cryogenic detectors -- Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc) -- Double-beta decay detectors; Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/17/11/P11023
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: The Cryogenic Underground Observatory for Rare Events (CUORE) is the most sensitive experiment searching for neutrinoless double-beta decay (0 νββ ) in 130 Te. CUORE uses a cryogenic array of 988 TeO2 calorimeters operated at ∼10 mK with a total mass of 741 kg. To further increase the sensitivity, the detector response must be well understood. Here, we present a non-linear thermal model for the CUORE experiment on a detector-by-detector basis. We have examined both equilibrium and dynamic electro-thermal models of detectors by numerically fitting non-linear differential equations to the detector data of a subset of CUORE channels which are well characterized and representative of all channels. We demonstrate that the hot-electron effect and electric-field dependence of resistance in NTD-Ge thermistors alone are inadequate to describe our detectors' energy-dependent pulse shapes. We introduce an empirical second-order correction factor in the exponential temperature dependence of the thermistor, which produces excellent agreement with energy-dependent pulse shape data up to 6 MeV. We also present a noise analysis using the fitted thermal parameters and show that the intrinsic thermal noise is negligible compared to the observed noise for our detectors.