Non-Accelerator Physics with The Super-Kamiokande Detector

超级神冈探测器的非加速器物理学

• 批准号: 2013073
• 负责人: Henry Sobel
• 金额: $ 47.3万
• 依托单位: University of California-Irvine
• 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: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2013073&HistoricalAwards=false
• 关键词: Non; Accelerator; Physics; Super; Kamiokande

This award will provide support for the group’s non-accelerator physics program at the Kamioka Laboratory in Japan with the Super-Kamiokande (Super-K) detector. Super-K has been a prime example of an astrophysics detector searching to help understand the properties of neutrinos and the search for proton decay since 1996. With the current upgrade, it is now preparing to precisely determine neutrino oscillation parameters with atmospheric neutrinos. Atmospheric neutrinos also provide an opportunity to understand the relative masses of the various neutrino flavors and are sensitive to the so-called Charge-Parity (CP)-violation phase, which could help identify why there is so much more matter than anti-matter in the Universe. This award will also support the possibility of observing other types of neutrino interactions that will extend the indirect search for dark matter to medium/low Dark Matter masses.The Kamioka Laboratory has an extensive program for involving the public, undergraduate students, and K-12 students in the excitement of this research. The graduate student working on the new system will be integrated into these activities and lecture on the physics that comes from looking at astroparticle physics in Super-K. Each summer, the group selects undergraduate students from UCI and high school students to work at UCI or in Japan. The State of California COSMOS program provides a residential academic experience for high school students with a mission to motivate the most creative minds of the new generation of prospective scientists, engineers, and mathematicians. UCI faculty create course “clusters” in topics from astrophysics to mathematical modeling to marine ecosystems just for COSMOS. Here, they propose to originate a cluster in experimental particle physics emphasizing detection techniques.A previous NSF grant supported the design, construction and installation of a new trigger system, the Wideband Intelligent Trigger (WIT) system, which completely processes all of the data in the un-triggered, raw stream and extracts electrons with high efficiency down 2.49 MeV, the limit of stable and reliable event reconstruction at Super-K. The UCI group will capitalize on the investment of the previous award and take the lead in WIT data analysis. Super-K is currently in the process of being upgraded with the addition of gadolinium in order to enhance its neutron detection capabilities. At present, neutrons are observed by the 2.2 MeV photon emitted from capture on Hydrogen after about 200 micro-sec. On average there are only seven detected photons and the detection efficiency is quite low. After dissolving 0.2% Gd2(SO4)3, 90% of the neutrons will capture on Gd which makes an 8 MeV gamma cascade and produces about 22 detected photons per capture after about 35 micro-sec. High efficiency neutron detection will benefit many physics topics in Super-K-Gd. This project advances the goals of the NSF Windows on the Universe Big Idea.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.

该奖项将为该小组在日本神冈实验室的非加速器物理项目提供支持，该项目拥有超级神冈探测器（Super-K）。自1996年以来，Super-K一直是天体物理探测器寻找中微子特性和寻找质子衰变的一个主要例子。随着目前的升级，它正准备用大气中微子精确地确定中微子振荡参数。大气中微子也提供了一个了解各种中微子的相对质量的机会，并且对所谓的电荷宇称（CP）违反相很敏感，这可以帮助确定为什么宇宙中的物质比反物质多得多。该奖项还将支持观测其他类型的中微子相互作用的可能性，这将把对暗物质的间接搜索扩展到中/低暗物质质量。神冈实验室有一个广泛的项目，让公众、本科生和K-12学生参与这项令人兴奋的研究。研究新系统的研究生将被整合到这些活动中，并讲授来自Super-K中天体粒子物理的物理知识。每年夏天，该小组从UCI挑选本科生和高中生到UCI或日本工作。加利福尼亚州COSMOS计划为高中生提供住宿学术体验，其使命是激发新一代未来科学家，工程师和数学家中最具创造力的头脑。UCI的教师们专门为COSMOS创建了从天体物理学到数学建模再到海洋生态系统的课程“集群”。在这里，他们建议在实验粒子物理学中建立一个强调检测技术的集群。先前的NSF拨款支持设计、建造和安装一个新的触发系统，宽带智能触发（WIT）系统，该系统完全处理未触发的原始流中的所有数据，并以低于2.49 MeV的高效率提取电子，这是Super-K稳定可靠的事件重建的极限。UCI集团将利用之前的投资，在WIT数据分析方面处于领先地位。Super-K目前正在进行升级，增加了钆，以增强其中子探测能力。目前，对中子的观测是在约200微秒后，由氢捕获产生的2.2 MeV光子。平均只能探测到7个光子，探测效率很低。溶解0.2% Gd2(SO4)3后，90%的中子捕获Gd，产生8 MeV级联，每次捕获约35微秒后产生约22个探测光子。高效率的中子探测将对Super-K-Gd的许多物理课题产生有益的影响。这个项目推进了NSF宇宙大构想窗口的目标。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

First gadolinium loading to Super-Kamiokande

• DOI: 10.1016/j.nima.2021.166248
• 发表时间: 2021-09
• 期刊: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 作者: K. Abe;C. Bronner;Y. Hayato;K. Hiraide;M. Ikeda;S. Imaizumi;J. Kameda;Y. Kanemura;Y. Kataoka;S. Miki;M. Miura;S. Moriyama;Y. Nagao;M. Nakahata;S. Nakayama;T. Okada;K. Okamoto;A. Orii;G. Pronost;H. Sekiya;M. Shiozawa;Y. Sonoda;Y. Suzuki;A. Takeda;Y. Takemoto;A. Takenaka;H. Tanaka;S. Watanabe;T. Yano;S. Han;T. Kajita;K. Okumura;T. Tashiro;J. Xia;G. Megias;D. Bravo-Berguño;L. Labarga;L. Marti;B. Zaldivar;B. Pointon;F. Blaszczyk;E. Kearns;J. Raaf;J. Stone;L. Wan;T. Wester;J. Bian;N. J. Griskevich;W. Kropp;S. Locke;S. Mine;M. Smy;H. Sobel;V. Takhistov;J. Hill;J. Kim;I. Lim;R. Park;B. Bodur;K. Scholberg;C. Walter;L. Bernard;A. Coffani;O. Drapier;S. Hedri;A. Giampaolo;M. Gonin;T. Mueller;P. Paganini;B. Quilain;T. Ishizuka;T. Nakamura;J. Jang;J. Learned;L. Anthony;D. Martin;M. Scott;A. Sztuc;Y. Uchida;S. Cao;V. Berardi;M. Catanesi;E. Radicioni;N. Calabria;L. Machado;G. De Rosa;G. Collazuol;F. Iacob;M. Lamoureux;M. Mattiazzi;N. Ospina;L. Ludovici;Y. Maekawa;Y. Nishimura;M. Friend;T. Hasegawa;T. Ishida;T. Kobayashi;M. Jakkapu;T. Matsubara;T. Nakadaira;K. Nakamura;Y. Oyama;K. Sakashita;T. Sekiguchi;T. Tsukamoto;T. Boschi;J. Gao;F. Di Lodovico;J. Migenda;M. Taani;S. Zsoldos;Y. Kotsar;Y. Nakano;H. Ozaki;T. Shiozawa;A. Suzuki;Y. Takeuchi;S. Yamamoto;A. Ali;Y. Ashida;J. Feng;S. Hirota;T. Kikawa;M. Mori;T. Nakaya;R. Wendell;K. Yasutome;P. Fernandez;N. McCauley;P. Mehta;K. Tsui;Y. Fukuda;Y. Itow;H. Menjo;T. Niwa;K. Sato;M. Tsukada;J. Lagoda;S. Lakshmi;P. Mijakowski;J. Zalipska;J. Jiang;C. Jung;C. Vilela;M. Wilking;C. Yanagisawa;K. Hagiwara;M. Harada;T. Horai;H. Ishino;S. Ito;F. Kitagawa;Y. Koshio;W. Ma;N. Piplani;S. Sakai;G. Barr;D. Barrow;L. Cook;A. Goldsack;S. Samani;D. Wark;F. Nova;J.Y. Yang;S. J. Jenkins;M. Malek;J. McElwee;O. Stone;M. Thiesse;L. Thompson;H. Okazawa;S. Kim;J.W. Seo;I. Yu;A. Ichikawa;K. Nishijima;M. Koshiba;K. Iwamoto;Y. Nakajima;N. Ogawa;M. Yokoyama;K. Martens;M. Vagins;M. Kuze;S. Izumiyama;T. Yoshida;M. Inomoto;M. Ishitsuka;H. Ito;T. Kinoshita;R. Matsumoto;K. Ohta;M. Shinoki;T. Suganuma;J.F. Martin;H. Tanaka;T. Towstego;R. Akutsu;M. Hartz;A. Konaka;P. de Perio;N. Prouse;S. Chen;B.D. Xu;M. Posiadala-Zezula;D. Hadley;M. O'Flaherty;B. Richards;B. Jamieson;J. Walker;A. Minamino;G. Pintaudi;S. Sano;R. Sasaki

Search for Cosmic-Ray Boosted Sub-GeV Dark Matter Using Recoil Protons at Super-Kamiokande.

在 Super-Kamiokande 使用反冲质子寻找宇宙射线增强的亚 GeV 暗物质。

• DOI: 10.1103/physrevlett.130.031802
• 发表时间: 2023
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: Abe K

Measurement of the cosmogenic neutron yield in Super-Kamiokande with gadolinium loaded water

用负载钆的水测量 Super-Kamiokande 中的宇宙成因中子产率

• 发表时间: 2023
• 期刊: Physical review D Particles and fields
• 作者: M. Shinoki

Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV

使用 Super-Kamiokande-IV 寻找太阳中自旋味进动引起的太阳电子反中微子

• DOI: 10.1016/j.astropartphys.2022.102702
• 发表时间: 2022
• 期刊: Astroparticle Physics
• 影响因子: 3.5
• 作者: Abe, K.;Bronner, C.;Hayato, Y.;Ikeda, M.;Imaizumi, S.;Ito, H.;Kameda, J.;Kataoka, Y.;Miura, M.;Moriyama, S.
• 通讯作者: Moriyama, S.

Evaluation of gadolinium's action on water Cherenkov detector systems with EGADS

• DOI: 10.1016/j.nima.2020.163549
• 发表时间: 2020-04-11
• 期刊: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
• 影响因子: 1.4
• 作者: Marti, Ll;Ikeda, M.;Zhang, H.
• 通讯作者: Zhang, H.