Understanding neutrino interactions and oscillations with off-axis neutrino beams

了解中微子与离轴中微子束的相互作用和振荡

• 批准号: MR/S034102/1
• 负责人: Mark Scott
• 金额: $ 155.88万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=MR%2FS034102%2F1
• 关键词: Understanding; neutrino; interactions; oscillations; off

Explaining the observed excess of matter compared to antimatter in the early universe is one of the biggest questions in physics. Neutrino oscillations can violate the CP symmetry, potentially by an amount large enough to produce this excess. Understanding neutrino oscillations is an essential step to understanding the universe we see today.Hyper-Kamiokande will use a 200-kiloton water Cherenkov detector to measure neutrino oscillations with unprecedented statistical precision. The challenge now is to reduce the systematic uncertainties of Hyper-Kamiokande to ensure the success of its oscillation measurements. Addressing this challenge is the focus of my fellowship.The dominant systematics in long-baseline oscillation experiments are due to the difficulty in relating what is observed in the detector to the neutrino energy. The E61 experiment has been designed to measure neutrino interactions over a range of angles off the J-PARC neutrino beam axis. The peak energy of the neutrino beam decreases as the off-axis angle increases, allowing E61 to directly relate neutrino energy to what is seen in the detector. This link enables E61 to produce a data-driven mapping between neutrino energy and the signatures observed in the detector, significantly reducing the systematic uncertainty associated with this.The E61 method requires a detailed understanding of the E61 detector, in particular the detector fiducial volume. To achieve this I will produce an optical calibration system for the E61 detector that will both map the detector volume and measure the detector response to a known signal. The system will deploy calibration sources and high-resolution cameras within the detector to build a 3D model of the full apparatus, producing an in-situ measurement of both the detector response and geometry, rather than relying on ex-situ measurements of one to calculate the other. This will be developed using a staged approach, with a prototype system installed in the E61 test beam experiment. The prototype will provide essential feedback for the full calibration system, whiile the test beam will provide valuable physics data for the calibration of water Cherenkov detectors.The research that this fellowship enables will address the key challenges in neutrino oscillation physics in two new ways: the use of off-axis beams to understand neutrino interactions and a novel calibration system to understand water Cherenkov detectors. Together these will produce the world's most sensitive search for CP violation in neutrino oscillations.

在早期宇宙中，解释与反物质相比，观察到的物质过剩是物理学中最大的问题之一。中微子振荡可能违反CP对称性，可能会产生足够大的量以产生这种过量。了解中微子振荡是了解我们今天看到的宇宙的重要步骤。Hyper-Kamiokande将使用200千克的水切伦科夫检测器来测量具有前所未有的统计精度的中微子振荡。现在的挑战是减少超级kamiokande的系统不确定性，以确保其振荡测量的成功。解决这一挑战的是我的团契的重点。长基线振荡实验的主要系统学是由于难以将检测器中观察到的与中微子能量相关联。 E61实验已设计为在J-PARC中微子梁轴上测量中微子相互作用。中微子束的峰值能随轴角的增加而降低，从而使E61可以将中微子能量与检测器中的中微子能量直接相关。该链接使E61能够在中微子能量与检测器中观察到的签名之间产生数据驱动的映射，从而大大降低了与此相关的系统不确定性。E61方法需要对E61检测器（特别是检测器iducecials量）进行详细的了解。为了实现这一目标，我将为E61检测器生成一个光学校准系统，该系统既可以映射检测器的体积并测量检测器对已知信号的响应。该系统将在检测器内部署校准源和高分辨率摄像机，以构建完整设备的3D模型，从而产生对检测器响应和几何形状的原位测量，而不是依靠一个测量值来计算另一个。这将使用分阶段方法开发，并在E61测试梁实验中安装了原型系统。该原型将为完整的校准系统提供必要的反馈，在测试光束将提供有价值的物理数据以校准Cherenkov探测器的校准。这项研究金启用的研究将解决中微子振荡物理学的关键挑战，以两种新的方式来了解非轴向光束的使用：了解中性射击量和了解Neptrino clibritions和一种新颖的碳水化合物。这些将共同产生世界上最敏感的对中微子振荡中CP违规的搜索。

项目成果

Supernova Model Discrimination with Hyper-Kamiokande

使用 Hyper-Kamiokande 进行超新星模型判别

• DOI: 10.3847/1538-4357/abf7c4
• 发表时间: 2021
• 期刊: The Astrophysical Journal
• 作者: Abe K

Pre-supernova Alert System for Super-Kamiokande

超级神冈的超新星爆发前警报系统

• DOI: 10.3847/1538-4357/ac7f9c
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: 越阪部晃永;山﨑慈恵;Bhagyshree J;田中祐梨子;小川公美;Zdravko L;Frederic B;角谷徹仁;L. N. Machado 他 Super-Kamiokande collaboration
• 通讯作者: L. N. Machado 他 Super-Kamiokande collaboration

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

Scintillator ageing of the T2K near detectors from 2010 to 2021

2010 年至 2021 年 T2K 近探测器闪烁体老化

• DOI: 10.1088/1748-0221/17/10/p10028
• 发表时间: 2022
• 期刊: Journal of Instrumentation
• 影响因子: 1.3
• 作者: K.Abe;T.Ishida;Y.Oyama et al.
• 通讯作者: Y.Oyama et al.

Search for proton decay via p ? µ + K 0 in 0.37 megaton-years exposure of Super-Kamiokande

通过 p 寻找质子衰变？

• DOI: 10.1103/physrevd.106.072003
• 发表时间: 2022
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Matsumoto R