Development of High-Purity NaI(T1) Crystals for the SABRE Dark Matter Experiment

开发用于 SABRE 暗物质实验的高纯度 NaI(T1) 晶体

基本信息

批准号：
2014198
负责人：
Jay Benziger
金额：
$ 24万
依托单位：
Princeton University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-07-01 至 2023-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2014198&HistoricalAwards=false
关键词：
Development Purity NaI T1 Crystals

项目摘要

Astrophysical observations and cosmological data give strong evidence that nearly a quarter of the Universe consists of dark matter. Weakly interacting massive particles (WIMPs) and axions have been proposed as theoretically favored candidates for dark matter. Despite the strong evidence for the existence of dark matter, neither WIMPs nor axions have been conclusively detected. The DAMA/LIBRA experiment claims for more than a decade to have detected dark matter with an array of low background NaI(Tl) crystal scintillators. However, other experiments with different detectors have not seen evidence for dark matter, even though they have very high sensitivity. Because the sensitivity to dark matter may depend on details of the detector material, a new search for evidence of dark matter with NaI(Tl) detectors with much lower background than DAMA/LIBRA achieved is needed. This award will fund the SABRE (Sodium-iodide with Active Background REjection) experiment which has been focused on the development of new crystals with lower background than DAMA/LIBRA. The development of high purity crystals can affect many fields of research, perhaps even semiconductors which presently have trace levels of radioactivity that affect their reliability. The effort also involves many fields and attracts students with a wide range of backgrounds. SABRE also promotes strong relationships with industrial partners, who then brought new products and services to all customers. Collaboration with RMD, Sigma Aldrich, Seastar Chemicals, and Sandfire has brought high purity products and sensitive assay services to the market. Collaboration with the Mellen Company has led to an invention that can be used to purify materials with higher efficiency.The research funded by this award will support the development and testing of a low-background NaI(Tl) crystal detector exploiting the new zone-refining technique developed by Princeton in collaboration with Mellen Company in order to improve the present record established with NaI-33; and the development of a crystal growth facility underground at the Canfranc Laboratory, Spain. SABRE will have two phases: phase 1 consists of one detector at the Gran Sasso Laboratory (LNGS), in Italy, which works as a proof-of-principle (PoP) for testing the radio-purity of crystals; in phase 2, twin detectors will be built in the northern and southern hemispheres. The SABRE-south is planned to be installed in the SUPL (Stawell Underground Physics Laboratory), a new underground laboratory in Australia under construction. The two detectors will enhance the potentiality to differentiate a dark matter signal from seasonal and local effects.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

天体物理学观察结果和宇宙学数据提供了有力的证据，表明宇宙的近四分之一由暗物质组成。已经提出了弱相互作用的巨大颗粒（wimps）和轴作为暗物质的理论上有利的候选者。尽管有强有力的证据表明存在暗物质，但尚未最终检测到wimps和轴子。 Dama/Libra实验声称拥有十多年来使用低背景NAI（TL）晶体闪烁体的阵列检测到的暗物质。但是，其他检测器的实验也没有看到暗物质的证据，即使它们具有很高的灵敏度。由于对暗物质的敏感性可能取决于检测器材料的细节，因此需要与NAI（TL）检测器相比，需要远低于达马/天秤座的nai（TL）探测器。该奖项将资助Saber（带有主动背景拒绝的钠碘化物），该实验的重点是发展低于Dama/Libra的新晶体的发展。高纯度晶体的发展可能会影响许多研究领域，甚至可能会影响半导体，这些半导体目前具有影响其可靠性的痕量放射性。这项工作还涉及许多领域，并吸引了具有广泛背景的学生。 Saber还促进了与工业合作伙伴的牢固关系，后者随后为所有客户带来了新产品和服务。与RMD，Sigma Aldrich，Seastar Chemicals和Sandfire的合作为市场带来了高纯度产品和敏感测定服务。与Mellen Company的合作导致了一项发明，该发明可用于以较高的效率净化材料。该奖项资助的研究将支持Princeton与Mellen Company开发的新的区域改装技术的低背景NAI（TL）水晶探测器的开发和测试，以与Mellen Company合作，以改善与Nai-33的合作，以改善目前的创纪录。以及西班牙Canfranc实验室地下的水晶生长设施的发展。军刀将有两个阶段：第1阶段由意大利的Gran Sasso实验室（LNGS）的一个检测器组成，该检测器是测试晶体无线电的原则证明（POP）；在第2阶段，将在北半球和南半球建造双探测器。安排安排在澳大利亚正在建设的新地下实验室的SUPL（Stawell Underground Physics Laboratory）中安装。这两个检测器将提高区分暗物质信号与季节性和本地效应的潜力。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的影响评估标准通过评估来支持的。

项目成果

期刊论文数量（14）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Dark matter search with the SABRE experiment

通过 SABRE 实验寻找暗物质

DOI：
10.1088/1742-6596/1342/1/012060
发表时间：
2020
期刊：
Journal of Physics: Conference Series
影响因子：
0
作者：
D’Imperio, Giulia
通讯作者：
D’Imperio, Giulia

The SABRE project and the SABRE Proof-of-Principle

DOI：
10.1140/epjc/s10052-019-6860-y
发表时间：
2019-04-26
期刊：
EUROPEAN PHYSICAL JOURNAL C
影响因子：
4.4
作者：
Antonello, M.;Barberio, E.;Xu, J.
通讯作者：
Xu, J.

SABRE: WIMP modulation detection in the northern and southern hemisphere

SABRE：北半球和南半球的 WIMP 调制检测

DOI：
10.1088/1742-6596/718/4/042021
发表时间：
2016
期刊：
Journal of Physics: Conference Series
影响因子：
0
作者：
Froborg, F
通讯作者：
Froborg, F

The SABRE experiment

军刀实验

DOI：
10.1142/s0217751x22400164
发表时间：
2022
期刊：
International Journal of Modern Physics A
影响因子：
1.6
作者：
Zani, A.;D’Angelo, D.;Vignoli, C.;Di Carlo, G.;Di Giacinto, A.;Ianni, A.;Orlandi, D.;Mariani, A.;Copello, S.;Tomei, C.
通讯作者：
Tomei, C.

Characterization of SABRE crystal NaI-33 with direct underground counting

通过直接地下计数表征 SABRE 晶体 NaI-33

DOI：
10.1140/epjc/s10052-021-09098-5
发表时间：
2021
期刊：
The European Physical Journal C
影响因子：
0
作者：
Antonello, M.;Arnquist, I. J.;Barberio, E.;Baroncelli, T.;Benziger, J.;Bignell, L. J.;Bolognino, I.;Calaprice, F.;Copello, S.;Dafinei, I.
通讯作者：
Dafinei, I.