4–7 Dec 2026
北京
Asia/Shanghai timezone

Session

未来大装置上的丰富物理

6 Dec 2026, 08:30
北京

北京

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  1. Jiangdong Li (Peking university)
    06/12/2026, 08:30

    High-energy muon beams have broad potential in frontier scientific research, including muon colliders, as well as in applications such as muon imaging. However, owing to the short lifetime of muons, a significant fraction of muons decay before reaching high energies when accelerated using conventional techniques. To enable high-gradient acceleration with large energy gain while preserving beam...

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  2. 凌云 戴 (Hunan University)
    06/12/2026, 08:50

    We study the production of true muonium at a proposed large-crossing-angle e+e− collider. Accounting for initial state radiation and energy spread, we predict 140 visible ground-state decays per hour. We also assess the detection of its 2.55-mm decay length using a gas-pixel tracking system, and compare true muonium and positronium spectroscopic shifts as a new-physics benchmark.

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  3. Keping (可平) Xie (谢) (Tsung-Dao Lee Institute, Shanghai Jiao Tong University)
    06/12/2026, 09:10

    A multi-TeV muon collider is simultaneously a collider for high-energy neutrinos: The radiation of soft $W^\pm$ gauge bosons from the muon beams gives rise to collisions of $\mu^+\nu$, $\mu^-\bar{\nu}$ and $\nu\bar{\nu}$ at center-of-mass energies close to that of the $\mu^+\mu^-$ collisions in a controlled and theoretically predictable setting. We focus on the leading partonic processes...

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  4. 承恩 刘 (北京大学)
    06/12/2026, 09:30
  5. 金明 程 (中山大学)
    06/12/2026, 09:45

    为提高大气缪子成像中的有效缪子通量并缩短数据采集时间,开展三段式超导螺线管聚束系统设计与模拟研究。采用 CST 建立超导螺线管三维磁场模型,结合 TraceWin 分析不同磁场结构及缪子动量条件下的聚焦性能,并利用 PHITS 蒙特卡洛程序进一步研究具有能量和角度分布的大气缪子在磁场中的输运行为。所设计的螺线管由入口段、中间段和出口段组成,总长 2 m,三段长度分别为 0.5 m、1.0 m 和 0.5 m,直径分别为 1.0 m、0.75 m 和 0.5 m,基准轴向磁场强度分别为 5.5 T、3.5 T 和 5.5 T。束流动力学模拟表明,该结构对特定动量范围内的缪子具有明显聚焦作用,在距螺线管出口 0.5 m 和 1.5 m 处,目标区域内的归一化通量比分别达到 2.17 和 1.73。进一步结合 PHITS...

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