中国‘超级显微镜’实现中子束输出里程碑

中国散裂中子源(CSNS)二期工程首个中子束线——中子技术开发站成功产出中子束,标志着该项目设备研制和安装工作的完成。该设施位于广东东莞,由中国科学院高能物理研究所运营,可像超级显微镜一样利用中子探测材料内部细节,支持可再生能源、航空航天和生物科学等领域的研究。

中国散裂中子源(CSNS)是我国首个、世界第四个脉冲散裂中子源,由中国科学院高能物理研究所运营,位于广东省东莞市。二期工程于2024年开始建设,计划于2029年完成,其质子加速器目标功率将提升至500千瓦,提高中子‘手电筒’的亮度,以捕捉材料中更微弱的结构信号,实现纳米级材料结构研究精度。

新完成的中子技术开发站作为中子探测技术开发的专用测试平台,具有超洁净环境以减少背景噪声、高效率以快速验证新技术。经过五年跨学科努力,科研人员解决了中子束精确控制、动态设备切换和重型部件搬运等设计与建造难题。这些突破将为国产科学仪器提供标准化测试条件,确保CSNS二期工程按时完成。

此外,CSNS最近实现了185千瓦束流功率在靶上的记录,并连续稳定运行72小时,此前在2024年已突破160千瓦和170千瓦。这一提升缩短了用户实验时间,提高了设施利用效率,并为前沿科学研究提供了更强技术支持。同时,它充分验证了二期工程束流功率提升的核心技术路径,推动中国散裂中子源技术向国际领先水平迈进。

该设施利用中子探测金属疲劳或电池性能等隐藏细节,支持材料科学领域的创新。

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