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中国物理学会2005年秋季学术会议于9月18-20日在武汉顺利召开.2005年是世界物理年,为此中国物理学会举办了一系列的纪念活动.这次由中国科学院武汉物理与数学研究所和武汉大学共同承办的中国物理学会2005年秋季学术会议是“世界物理年在中国”的重要学术活动之一,吸引了来自全国物理学界的学者和研究生代表参加,还特别邀请了欧洲物理学会主席以及部分海外华人物理学家参加. 相似文献
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《中国光学与应用光学文摘》2006,(6)
第二届数字电视与无线多媒休通信国际论坛,2005,1 1.第八届全国激光科学技术青年学术交流会,2005 .11.中国仪器仪表学会2005年第五届精密工程学术研讨会,2005,11.引用会议文献一览表~~ 相似文献
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微波消解-ICP-AES测定鄱阳湖流域沉积物中微量元素 总被引:8,自引:0,他引:8
为了研究鄱阳湖沉积物中微量元素近几年来随季节、年度及沿程的变化情况,对2003年和2005年不同季节采集的鄱阳湖流域各采样点底泥进行了ICP-AES测定.结果表明,鄱阳湖沉积物中各元素的含量随着季节和年度变化而发生一定改变,枯水期普遍大于丰水期;南矶山2005年Cu和Pb含量较2003年有所降低;蔡家湾则与南矶山相反;姚公渡2005年Cu含量也较2003年低,Pb含量则高于2003年;与鄱阳湖流域底泥背景值相比,所测几个样点的Cu,Pb,Cr和Zn含量均在一定程度上超标;除大坞河外,其余各样点As含量均在背景值范围内;从饶河到鄱阳湖入湖口处,各元素含量呈逐渐降低趋势.文章提出的研究方法操作简便,效率高,劳动强度低. 相似文献
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X射线光谱分析的现状与趋势--参加国际NAMALS8、IRRMA6、TXRF 2005会议有感 总被引:1,自引:0,他引:1
罗立强 《光谱学与光谱分析》2006,26(1):189-191
1会议概况 2005年,有三个与X射线光谱分析紧密相关的国际会议召开,他们分别是国际NAMALS 8、IRRMA 6和TXRF 2005会议.笔者有幸参加了这三个会议,从中也了解到目前国际X射线光谱分析领域的研究现状和发展趋势. 相似文献
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Electron Cloud Instability has been studied in the operation of BEPC. The BEPCⅡ began the commissioning in November 2006 and the positron beam current has reached 500 mA. Because of such a high beam current, some instabilities such as ECI, bunch lengthening et al, have appeared during the operation. The experimental investigation on ECI during the commissioning of BEPCⅡ will be reported in this paper. 相似文献
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4W1磁铁电源控制系统的改造 总被引:2,自引:0,他引:2
在北京正负电子对撞机(BEPC)中用于同步辐射~X~光研究的插入件4W1磁铁由主线圈绕组和补偿线圈绕组组成,由两台高精度直流电源(主电源和辅助电源)供电. 2004~年11月, BEPC开机使用的两台主电源和辅助电源是重新设计制造的,采用新的控制接口PSI和控制器PSC进行控制. 这套系统是在~BEPCⅡ磁铁电源控制样机PSC/PSI完成的基础上仅用1个月的时间完成的. 在运行初期经过多次调试和修改后, 安全无故障运行历时4个月,为同步辐射提供两条X光束线,保证了用户顺利地进行实验. 它是第一个投入运行的BEPCⅡ储存环控制系统的一个新系统. 介绍了基于EPICS平台开发的4W1磁铁电源新的控制系统和4W1磁铁
升降流的特点以及控制升降流应用程序的研制. 相似文献
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ZHAO Ji-Jiu WANG Chun-Hong LEI Ge GAO Wen-Chun WANG Xiao-Li LI Gang YUE Ke-Juan ZHAO Zhuo LIU Jia XU Shi-Fu HUANG Song XUE Peng KONG Deng-Ming MA Mei WANG Jin-Can XU Guang-Lei 《中国物理C(英文版)》2006,30(11):1100-1106
The BEPCⅡ project is for upgrading the Beijing Electron Positron Collider to reach a higher luminosity.BEPCⅡ is designed as micro-β plus multi-bunches with double rings and has adopted cryogenic superconducting technology. The BEPCⅡ control system is a distributed system based on EPICS. In the past few years, we went through the design stage, R&D stage, development stage and the system will be installated. The BEPCⅡ machine commissioning with beam will start in October 2006. This paper describes the BEPCⅡ~control system and the progress of its development. 相似文献
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This paper describes the beam commissioning process of BEPCⅡ Injector Linac. Aiming at the beam design goal and the beam physics characteristics of this injector linac, the beam commissioning method has been proposed, and some problems met in the beam commissioning process have been analyzed and studied. In addition, the preliminary beam commissioning results have been obtained. 相似文献
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Development of picosecond time‐resolved X‐ray absorption spectroscopy by high‐repetition‐rate laser pump/X‐ray probe at Beijing Synchrotron Radiation Facility
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Hao Wang Can Yu Xu Wei Zhenhua Gao Guang-Lei Xu Da-Rui Sun Zhenjie Li Yangfan Zhou Qiu-Ju Li Bing-Bing Zhang Jin-Qiang Xu Lin Wang Yan Zhang Ying-Lei Tan Ye Tao 《Journal of synchrotron radiation》2017,24(3):667-673
A new setup and commissioning of transient X‐ray absorption spectroscopy are described, based on the high‐repetition‐rate laser pump/X‐ray probe method, at the 1W2B wiggler beamline at the Beijing Synchrotron Radiation Facility. A high‐repetition‐rate and high‐power laser is incorporated into the setup with in‐house‐built avalanche photodiodes as detectors. A simple acquisition scheme was applied to obtain laser‐on and laser‐off signals simultaneously. The capability of picosecond transient X‐ray absorption spectroscopy measurement was demonstrated for a photo‐induced spin‐crossover iron complex in 6 mM solution with 155 kHz repetition rate. 相似文献
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QIN Qing HUANG Nan LIU Wei-Bin LIU Yu-Dong PENG Yue-Mei QIU Jing WANG Dou WANG Xin-Hao WANG Na WANG Jiu-Qing WEI Yuan-Yuan WEN Xue-Mei XING Jun XU Gang Yu Cheng-Hui ZHANG Chuang ZHANG Yuan ZHAO Zheng ZHOU De-Min 《中国物理C(英文版)》2009,33(Z2)
During the 1st and 2nd stages of the commissioning of the upgrade project of the Beijing Electron Positron Collider(BEPC Ⅱ),which started on Nov.12,2006 and Oct.24,2007,respectively,we got the luminosity one tenth of its design value,provided beams to synchrotron radiation users for about 4 months,and studied beam dynamics as well.In this paper,some beam dynamics studies on the storage rings and their preliminary results are given. 相似文献
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In this paper,a dedicated synchrotron radiation (SR) mode for the BEPCⅡ with an emittance of 85 nm has been designed,including the linear lattice,chromaticity correction and dynamic aperture optimization.The emittance of the new mode is about 60% of the previous mode used for routine operation of the BEPCⅡ .The effect of wigglers on the linear lattice was compensated and the total dynamic aperture including the wigglers’ nonlinear effect was estimated.The preliminary commissioning at the end of 2008 and the formal operation with the new mode confirmed its merits. 相似文献