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arXiv 2205.04549physics.ins-detnucl-ex
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CUORE低温量热计的能量相关电热响应模型

An Energy-dependent Electro-thermal Response Model of CUORE Cryogenic Calorimeter

CUORE Collaboration, D. Q. Adams, C. Alduino, K. Alfonso, F. T. Avignone, O. Azzolini, G. Bari, F. Bellini, G. Benato, M. Beretta, M. Biassoni, A. Branca, C. Br… 展开作者

CUORE Collaboration, D. Q. Adams, C. Alduino, K. Alfonso, F. T. Avignone, O. Azzolini, G. Bari, F. Bellini, G. Benato, M. Beretta, M. Biassoni, A. Branca, C. Brofferio, C. Bucci, J. Camilleri, A. Caminata, A. Campani, L. Canonica, X. G. Cao, S. Capelli, C. Capelli, L. Cappelli, L. Cardani, P. Carniti, N. Casali, E. Celi, D. Chiesa, M. Clemenza, S. Copello, O. Cremonesi, R. J. Creswick, A. D'Addabbo, I. Dafinei, F. Del Corso, S. Dell'Oro, S. Di Domizio, S. Di Lorenzo, V. Dompè, D. Q. Fang, G. Fantini, M. Faverzani, E. Ferri, F. Ferroni, E. Fiorini, M. A. Franceschi, S. J. Freedman, S. H. Fu, B. K. Fujikawa, S. Ghislandi, A. Giachero, A. Gianvecchio, L. Gironi, A. Giuliani, P. Gorla, C. Gotti, T. D. Gutierrez, K. Han, E. V. Hansen, K. M. Heeger, R. G. Huang, H. Z. Huang, J. Johnston, G. Keppel, Yu. G. Kolomensky, R. Kowalski, M. Li, R. Liu, L. Ma, Y. G. Ma, L. Marini, R. H. Maruyama, D. Mayer, Y. Mei, S. Morganti, T. Napolitano, M. Nastasi, J. Nikkel, C. Nones, E. B. Norman, A. Nucciotti, I. Nutini, T. O'Donnell, M. Olmi, J. L. Ouellet, S. Pagan, C. E. Pagliarone, L. Pagnanini, M. Pallavicini, L. Pattavina, M. Pavan, G. Pessina, V. Pettinacci, C. Pira, S. Pirro, S. Pozzi, E. Previtali, A. Puiu, S. Quitadamo, A. Ressa, C. Rosenfeld, S. Sangiorgio, B. Schmidt, N. D. Scielzo, V. Sharma, V. Singh, M. Sisti, D. Speller, P. T. Surukuchi, L. Taffarello, F. Terranova, C. Tomei, K. J. Vetter, M. Vignati, S. L. Wagaarachchi, B. S. Wang, B. Welliver, J. Wilson, K. Wilson, L. A. Winslow, S. Zimmermann, S. Zucchelli

摘要:

稀有事件低温地下观测站(CUORE)是在$^{130}\text{Te}$中寻找无中微子双β衰变($0νββ$)的最灵敏的实验。CUORE使用988 TeO $_2$量热计的低温阵列,在$\sim$ 10 mK下运行,总质量为741 kg。为了进一步提高灵敏度,必须很好地理解检测器的响应。在这里,我们提出了一个非线性热模型的CUORE实验的探测器的基础上。我们已经研究了平衡和动态电热模型的探测器,通过数值拟合非线性微分方程的CUORE通道的一个子集的探测器数据,以及表征和代表的所有通道。我们证明,热电子效应和电场依赖的电阻在NTD-Ge热敏电阻单独是不足以描述我们的探测器的能量依赖的脉冲形状。我们在热敏电阻的指数温度依赖性中引入了经验二阶校正因子,这与能量依赖的脉冲形状数据产生了极好的一致性,最高可达6 MeV。我们还提出了一个噪声分析,使用拟合的热参数,并表明,固有的热噪声是可以忽略不计相比,我们的探测器所观察到的噪声。

英文摘要:

The Cryogenic Underground Observatory for Rare Events (CUORE) is the most sensitive experiment searching for neutrinoless double-beta decay ($0νββ$) in $^{130}\text{Te}$. CUORE uses a cryogenic array of 988 TeO$_2$ calorimeters operated at $\sim$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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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