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中国散裂中子源首次打靶成功

2017-09-01 17:35:51   央广网

中国散裂中子源主体工程(记者黄光辉摄)

央广网东莞9月1日消息(记者黄光辉) 位于广东东莞的国家大科学工程——中国散裂中子源(CSNS)首次打靶成功,获得中子束流。这标志着中国散裂中子源主体工程顺利完工,进入试运行阶段。预计2018年春CSNS将按计划全部完工,正式对国内外用户开放。建成后的CSNS将成为世界第四台脉冲式散裂中子源,在材料科学和技术、生命科学、物理、化学化工、资源环境、新能源等诸多领域具有广泛应用前景,将为我国产生高水平的科研成果提供有力支撑,并为解决国家可持续性发展和国家安全战略需求的许多瓶颈问题提供先进平台。

中国散裂中子源环形加速器(记者黄光辉摄)

今天上午中国散裂中子源工程总指挥、中科院院士陈和生表示,中国科学院从2006年起支持了相关关键技术的预研,攻克了诸多技术难题。加速器、靶站和谱仪工艺设备的批量生产在全国近百家合作单位完成,许多设备的研制达到国内外先进水平,设备国产化率达到96.7%以上。2011年10月CSNS举行了工程奠基典礼;2014年10月,加速器首台设备——负氢离子源投入安装;2017年7月,快循环同步加速器成功将质子束流加速到设计能量1.6GeV。2017年8月28日, CSNS终于优质、按期完成了主要建设任务,质子束流在低流强和高流强状态下均一次打靶就获得成功,这表明加速器和靶站设计科学合理,证明了各项设备加工制造与安装调试的高质量和高可靠性,调试进度大大超过国际上其他散裂中子源调试过程,创造了高能物理研究所历史上的又一次辉煌。

中国散裂中子源工程加速器技术部副主任王生(记者黄光辉摄)

CSNS将是国际前沿的高科技、多学科应用的大型研究平台。首批建设的三台谱仪为通用粉末衍射仪、多功能反射仪、小角散射仪。通用粉末衍射仪主要用于研究物质的晶体结构和磁结构,以满足来自材料科学、纳米科学、凝聚态物理和化学等众多领域的科学研究和工业应用的需求。多功能反射仪通过分析来自样品的反射中子,研究物质的表面和界面结构,主要应用领域包括各种新兴薄膜材料的结构、磁性低维结构及表面磁性、聚合物LB膜及生物膜的结构和界面现象等。小角散射谱仪用于探测物质体系在1~100纳米尺度内的微观和介观结构,实验应用范围将包含化学、物理、生物、材料和地质等广泛学科,服务于国家能源、环境、生物和新材料等诸多高科技研发领域。

中国散裂中子源工程总指挥、中科院院士陈和生介绍工程进展(记者黄光辉摄)

CSNS是国家“十一五”期间立项、“十二五”期间重点建设的重大科技基础设施,由中国科学院和广东省共同建设,法人单位为中国科学院高能物理研究所,共建单位为中国科学院物理研究所。2006年项目选址于广东省东莞市大朗镇,2007年2月中国科学院和广东省政府,高能所与东莞市政府分别签订了散裂中子源落户东莞共建协议。

科研人员在离子源放电室安装设备(记者黄光辉摄)

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