IsoDAR Neutrino Target R&D and Engineering

IsoDAR 中微子目标 R

• 批准号: 1707969
• 负责人: Michael Shaevitz
• 金额: $ 40.21万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-01 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707969&HistoricalAwards=false
• 关键词: IsoDAR; Neutrino; Target; R&D; Engineering

Neutrinos from accelerators and nuclear reactors have played a central role in our understanding of the properties of these elusive, hard-to-observe fundamental particles. Three different types of neutrino are known to exist, having been detected through their interaction via one of the known forces of nature. A fourth type of neutrino has been postulated, a so-called light sterile neutrino, that is presumed to only interact via gravity. This award funds the R&D and engineering necessary to bring the IsoDAR (Isotope Decay-At-Rest) experiment from the stage of a Conceptual Design Report to a Preliminary Design Report. IsoDAR is a novel, pure electron-antineutrino source that, when paired with an underground detector, allows for searches for sterile neutrinos and non-standard interactions. The issue that needs to be addressed is the high intensity targeting on a neutrino production target which has, so far, been studied with simulations and some initial engineering studies.Associated with this project, this program addresses four areas: 1) development of a globally competitive STEM workforce; 2) increased participation of women and minorities; 3) increased partnerships between academia and industry; and 4) improved well-being of individuals in society. This project will include a graduate student and students from the summer REU program, which averages 75% female participants. It will give them the opportunity to apprentice with industry contractors. Finally, this work has relevance for strong industrial collaboration because of the use of bright accelerators for isotope production and Accelerator Driven Systems (ADS) technology, applied, for example, to driving thorium reactors, thus supporting the development of safe nuclear energy sources.The IsoDAR antineutrino rates seem achievable with the proposed proton beam rates, but target cooling and radiation safety issues need more design work coupled with simulations. In addition, the target region has to use difficult materials such as lithium and beryllium to allow a large amount of 8Li to be produced. Thus, the design of the neutrino production target needs to be carefully engineered. The work being funded in this award is to bring the target engineering and cooling simulations to the level of a full detailed design with realistic costing. It will also fund a prototype test of the cooling simulation. The proposed target and cooling design study will explore the feasibility of new methods to target very high intensity beams. This is of high intellectual merit since high power targetry is an important question throughout the Intensity Frontier program. Thus, this award has the potential to be transformative in multiple areas of particle physics. In addition, developing a high intensity antineutrino source that can be taken to any large hydrogen-based neutrino detector will open up a large range possible future experiments.

来自加速器和核反应堆的中微子在我们理解这些难以捉摸、难以观察的基本粒子的特性方面发挥了核心作用。已知存在三种不同类型的中微子，通过已知的自然力之一的相互作用检测到中微子。人们假设了第四种类型的中微子，即所谓的轻惰性中微子，它被认为仅通过重力相互作用。该奖项资助将 IsoDAR（静止同位素衰变）实验从概念设计报告阶段转变为初步设计报告阶段所需的研发和工程。 IsoDAR 是一种新颖的纯电子反中微子源，与地下探测器配合使用时，可以搜索惰性中微子和非标准相互作用。需要解决的问题是针对中微子产生目标的高强度目标，迄今为止，已经通过模拟和一些初步工程研究对其进行了研究。与该项目相关，该计划涉及四个领域：1）培养具有全球竞争力的 STEM 劳动力； 2）增加妇女和少数族裔的参与； 3）加强学术界和工业界之间的伙伴关系； 4) 改善社会个人的福祉。该项目将包括一名研究生和 REU 夏季项目的学生，该项目平均有 75% 是女性参与者。这将使他们有机会向行业承包商当学徒。最后，这项工作与强有力的工业合作具有相关性，因为使用明亮加速器进行同位素生产和加速器驱动系统（ADS）技术，例如应用于驱动钍反应堆，从而支持安全核能源的开发。IsoDAR反中微子速率似乎可以通过拟议的质子束速率实现，但目标冷却和辐射安全问题需要更多的设计工作与模拟相结合。此外，目标区域必须使用锂和铍等困难材料才能大量生产8Li。因此，中微子产生目标的设计需要仔细设计。该奖项资助的工作是将目标工程和冷却模拟提升到具有实际成本的完整详细设计水平。它还将资助冷却模拟的原型测试。拟议的目标和冷却设计研究将探索瞄准极高强度光束的新方法的可行性。这是具有很高的智力价值，因为高功率目标是整个强度前沿计划的一个重要问题。因此，该奖项有可能在粒子物理学的多个领域产生变革。此外，开发一种可用于任何大型氢基中微子探测器的高强度反中微子源，将为未来开展大量可能的实验开辟道路。

项目成果

The shielding design concept for the ISODAR neutrino target

ISODAR中微子目标的屏蔽设计概念

• DOI: 10.1088/1748-0221/15/07/t07002
• 发表时间: 2020
• 期刊: Journal of Instrumentation
• 影响因子: 1.3
• 作者: Bungau, Adriana;Alonso, Jose;Bartoszek, Larry;Conrad, Janet M.;Dunton, Edward;Shaevitz, Michael H.
• 通讯作者: Shaevitz, Michael H.

Neutrino physics opportunities with the IsoDAR source at Yemilab

• DOI: 10.1103/physrevd.105.052009
• 发表时间: 2022-03-28
• 期刊: PHYSICAL REVIEW D
• 影响因子: 5
• 作者: Alonso, J.;Arguelles, C. A.;Winklehner, D.
• 通讯作者: Winklehner, D.