The NEXT experiment: A high pressure xenon gas TPC for neutrinoless double beta decay searches
The NEXT experiment: A high pressure xenon gas TPC for neutrinoless double beta decay searches
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DOI：
10.1016/j.nima.2012.10.048
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发表时间：
2012-10
影响因子：
1.4
通讯作者：
D. Lorca;J. Mart'in-Albo;F. Monrabal;F. C. Collaboration
中科院分区：
文献类型：
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作者：
D. Lorca;J. Mart'in-Albo;F. Monrabal;F. C. Collaboration
无中子双β衰变（英语：Neutrinole-double beta decay，简称ββ0ν）是一种假设的、非常慢的核跃迁，其中两个中子同时经历β衰变而没有中微子的发射。这个过程的重要性超出了它的内在利益：一个明确的观察将建立中微子的马约拉纳性质，并证明轻子数的违反。NEXT是一个新的实验，使用放射纯高压氙气TPC寻找无中微子双β衰变，充满了100公斤浓缩的氘-136。NEXT将是第一个使用SOFT（分离，优化功能）技术的电致发光读出的大型高压气体TPC。该设计包括非对称TPC，在透明阴极后面有光电倍增管，在阳极后面有位置敏感的光像素。该实验已被批准于2014年在西班牙Canfranc Subterráneo（LSC）开始数据采集。
Neutrinoless double beta decay (ββ0ν) is a hypothetical, very slow nuclear transition in which two neutrons undergo beta decay simultaneously and without the emission of neutrinos. The importance of this process goes beyond its intrinsic interest: an unambiguous observation would establish a Majorana nature for the neutrino and prove the violation of lepton number. NEXT is a new experiment to search for neutrinoless double beta decay using a radiopure high-pressure xenon gas TPC, filled with 100kg of Xe enriched in Xe-136. NEXT will be the first large high-pressure gas TPC to use electroluminescence readout with SOFT (Separated, Optimized FuncTions) technology. The design consists in asymmetric TPC, with photomultipliers behind a transparent cathode and position-sensitive light pixels behind the anode. The experiment is approved to start data taking at the Laboratorio Subterráneo de Canfranc (LSC), Spain, in 2014.