J-PARC MLF中介子靶的现状与展望

Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI:10.22323/1.369.0124

S. Makimura, S. Matoba, N. Kawamura

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引用次数: 0

摘要

在J-PARC MLF MUSE (μ on Science Establishment)上，用3gev 333 microA质子束照射20mm厚各向同性石墨制成的μ子靶，产生了前所未有强度的脉冲μ子束。第一束介子于2008年9月26日成功产生。为了延长μ子靶的寿命，2014年9月安装了辐射损伤分布范围更广的μ子旋转靶。旋转靶已成功使用5年，没有更换过。与此同时，在2018年9月的长时间停运期间，发现了可能导致传输丢失的旋转系统故障。2018年9月至2019年7月，在仔细监测和准备措施的情况下，轮换目标运行。本报告将介绍J-PARC MLF MUSE旋转系统存在的问题及解决措施。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Status and Future Prospect of Muon Target at J-PARC MLF

A pulsed muon beam with unprecedented intensity will be generated by a 3 GeV 333 microA proton beam on a muon target made of 20 mm thick isotropic graphite at J-PARC MLF MUSE (Muon Science Establishment). The ﬁrst muon beam was successfully produced on September 26th, 2008. To extend the lifetime of the muon target, muon rotating target, in which the radiation damage is distributed to a wider area, was installed in September of 2014. The rotating target has been successfully used for five years without replacement. Meanwhile, the failure on the rotation system that leads the possibility of the loss of the transmission was found during the long-shutdown in September of 2018. The rotating target had been operated with the careful monitoring and the measures in preparation for the loss of the transmission from September 2018 to July 2019. In this report, the trouble of the rotation system and the measures at J-PARC MLF MUSE will be introduced.

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Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)

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