CUORE: Phase-I Construction and Crystal Bolometer Research and Development

CUORE：一期建设及晶体辐射热计研发

• 批准号: 0605119
• 负责人: Frank Avignone
• 金额: $ 137.66万
• 依托单位: University South Carolina Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0605119&HistoricalAwards=false
• 关键词: CUORE; Phase; Construction; Crystal; Bolometer

PROPOSAL NUMBER: 0605119INSTITUTION: University South Carolina Research FoundationNSF PROGRAM: PHY ¨C INTERMEDIATE ENERGY NUCLEAR SCIENCEPRINCIPAL INVESTIGATOR: Avignone, Frank T. TITLE: CUORE: Phase-I Construction and Crystal Bolometer Research and Development ABSTRACTThe intellectual merit of experimental neutrino-less double beta decay efforts has been greatly enhanced by the observation of the oscillations of atmospheric neutrinos, the confirmation of oscillations of solar neutrinos by SuperKamiokande, the demonstration by the SNO experiment that the flux of 8-B neutrinos predicted by Bahcall is correct, and by the recent confirmation of the large Mikheyev-Smirnov-Wolfenstein mixing angle solution of the solar-neutrino problem by the KamLAND experiment. However, these neutrino oscillation data cannot yield the mass scale of neutrinos, nor can they be used to determine that neutrinos are Majorana particles. If the mass of the electron neutrino is ¡Ü 0.2 eV, and neutrinos are Majorana particles, neutrino-less double beta decay is the only hope of determining the mass scale and it is the only practical experiment for determining that they are Majorana particles. Knowledge of the mass would determine what role, if any, neutrinos play as Hot Dark Matter candidates, and if they are Majorana particles, this opens the door to leptogenesis as a possible mechanism for the tiny particle over anti-particle asymmetry in the early universe that would have led to the particle dominated universe observed today.Hence, CUORE (Cryogenic Underground Observatory for Rare Events), as a neutrino-less double beta decay experiment, has significant discovery potential. This proposal is a request to support the University of South Carolina (USC) in: 1) the first phase of the construction of the 130-Te CUORE experiment; the USC group proposes to take responsibility for the production of the electronic components necessary to instrument the 988 TeO2 bolometers; and 2) an R&D program to determine the technical feasibility and cost of constructing CUORE with Te enriched to 85% in 130-Te. The broader impacts of this project relate to development of ultralow background Ge detectors, transferred now to commercial companies. The low background technology has been used to produce an ultra low background Ge detector for the Savannah River Low-Background Counting Facility. This facility is used for US government work related to Homeland Defense and National Defense.

提案编号：0605119机构：南卡罗来纳州大学研究基金会美国国家科学基金会物理学-中间能核科学首席执行官：Avignone，Frank T。标题：CUORE：第一阶段建设和晶体测辐射热计研究与开发 无中微子双β衰变实验研究的学术价值得到了极大的提高：对大气中微子振荡的观测，SuperKamiokande对太阳中微子振荡的证实，SNO实验对Bahcall预言的8-B中微子通量的验证，以及最近由KamLAND实验证实的太阳中微子问题的大Mikheyev-Smirnov-Wolfenstein混合角解。然而，这些中微子振荡数据不能产生中微子的质量尺度，也不能用来确定中微子是马约拉纳粒子。如果电子中微子的质量是~ 0.2eV，中微子是马约拉纳粒子，那么无中微子双β衰变是确定质量尺度的唯一希望，也是确定它们是马约拉纳粒子的唯一实际实验。质量的知识将决定什么样的角色，如果有的话，中微子作为热暗物质的候选者，如果他们是马约拉纳粒子，这打开了一扇大门，leptogenesis作为一种可能的机制，在早期宇宙中的反粒子不对称性，这将导致今天观察到的粒子主导的宇宙。低温地下稀有事件观测站（Cryogenic Underground Observatory for Rare Events）作为一个无中微子双β衰变实验，具有重大的发现潜力。该提案要求支持南卡罗来纳州大学（USC）：1）130-Te CUORE实验建设的第一阶段; USC集团建议负责生产988 TeO 2测辐射热计所需的电子元件; 2）一项研发计划，以确定建设130-Te中Te富集至85%的CUORE的技术可行性和成本。该项目的更广泛影响涉及超低背景锗探测器的开发，现已转移到商业公司。低本底技术已被用于生产超低本底锗探测器的萨凡纳河低本底计数设施。该设施用于与国土防御和国防有关的美国政府工作。