共查询到17条相似文献,搜索用时 62 毫秒
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介绍了透射光栅在北京同步辐射装置3W1B光束线光源输出特性诊断中的应用。借助透射光栅进行了能量标定及分辨率的测量,并定性地给出了束线的高次谐波情况。 相似文献
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3B1B光束线是北京同步辐射装置(BSRF)3B1光刻束线的一条分支束线,其光路和布局如图1所示.从北京正负电子对撞(BEPC)储存环3B1弯转磁铁处引出的同步辐射水平线偏振光,光源水平方向发散角为±3.75mrad,竖直方向发散角为±0.2mrad,在距源13.5m处由一块柱面准直扫描镜M1反射后,水平方向的汇聚角为±1.25mrad,竖直方向发散角不变.在距源24m处,有一块可升降的旋转抛物面反射镜M2.它降下时,光通过供其他实验站使用;升起时,将光反射聚焦于上方0.6m处生物光学实验站光栅… 相似文献
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随着第四代同步辐射光源的兴起,得益于X射线亮度和相干性的大幅度提升,同步辐射实验技术在谱学、散射和成像等方面取得了显著进步。这些技术能够探测复杂非均匀体系和动态变化过程中的物质结构、成分、化学价态、电子态和磁性等关键信息,在基础科学领域和应用基础研究中发挥关键作用。文章旨在介绍第四代同步辐射光源的线站技术优势,并结合具体例子探讨其在若干物理研究中的应用,同时也讨论了当前存在的工程技术挑战。希望人们能够了解第四代同步辐射光源的光束线站的特点和应用潜力,以促进其在各个科研领域的推广。 相似文献
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北京同步辐射实验室过去的10年里从无到有,从纸面设计到装置建成,从抽象概念到具体实践,经历了近10个春秋,在参加者的共同努力下,目前已取得了可喜的成果.北京正负电子对撞机(BEPC)在同步辐射专用模式下已正常运行了~600小时.截止到1991年6月申请同步辐射机时的用户已经超过60,他们中的大部分人已经在北京同步辐射装置(BSRF)上做了实验并且取得了满意的结果.过去的10年是值得纪念的10年. 相似文献
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Upgrading design of the 3B1A beamline for x-ray nanometre lithography of microelectronic devices at BSRF 下载免费PDF全文
Beijing Synchrotron Radiation Facility is a partly dedicated synchrotron radiation source operated in either parasitic or dedicated mode. The 3B1A beamline, extracted from a bending magnet, was originally designed as a soft x-ray beamline for submicro x-ray lithography with critical lateral size just below 1μm in 1988 and no change has been made since it was built. But later the required resolution of x-ray lithography has changed from sub-micrometre to the nanometre in the critical lateral size. This beamline can longer more meet the requirement for x-ray nano lithography and has to be modified to fit the purpose. To upgrade the design of the 3B1A beamline for x-ray nano lithography, a mirror is used to reflect and scan the x-ray beam for the nano lithography station, but the mirror's grazing angle is changed to 27.9mrad in the vertical direction, and the convex curve needs to be modified to fit the change; the tiny change of mirror scanning angle is firstly considered to improve the uniformity of the x-ray spot on the wafer by controlling the convex curve. 相似文献
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主要关于上海同步辐射装置(SSRF)储存环电子引发产生的韧致辐射和中子辐射的研究. 中子和光子经多种组合材 料(厚度在5cm~115cm之间)屏蔽后的剂量特征由蒙特卡罗代码MCNP和EGSnrc估算得到; 蒙特卡罗计算表明, 单一的材料如铅, 铁和聚乙烯对高能中子是无效的生物屏蔽材料, 而组合材料如铅或者铁加聚乙烯和铅或者铁加混凝土被认为是屏蔽高能中子很好的组合材料. 铅铁等高Z材料加点包含有氢的低Z材料如聚乙烯是同时屏蔽高能中子和韧致辐射的一种比较好的组合材料选择. 相似文献
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主要关于上海同步辐射装置(SSRF)储存环电子引发产生的韧致辐射和中子辐射的研究.中子和光子经多种组合材料(厚度在5cm-115cm之间)屏蔽后的剂量特征由蒙特卡罗代码McNP和EGSnrc估算得到;蒙特卡罗计算表明,单一的材料如铅,铁和聚乙烯对高能中子是无效的生物屏蔽材料,而组合材料如铅或者铁加聚乙烯和铅或者铁加混凝土被认为是屏蔽高能中子很好的组合材料.铅铁等高Z材料加点包含有氢的低Z材料如聚乙烯是同时屏蔽高能中子和韧致辐射的一种比较好的组合材料选择. 相似文献
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理想波导短程透镜的研究 总被引:4,自引:0,他引:4
报道无曲率奇点,无像差光波导短程透镜的研究。在透镜面型设计上,应用前文提出的过渡区母线函数形式,有效地消除了透镜卷边两端的曲率奇点,具体设计和研制了理想光波导短程透镜。 相似文献
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Calculation of Transmitted Efficiency and Output Characteristics for Beijing Synchrotron Radiation Facility (BSRF) 3B3 Beamline 下载免费PDF全文
Based on the radiation characteristics of the bend magnet source, the output characteristics of the BSRF-3B3 beamline was analyzed and discussed. The result is the foundation of adjustment and diagnosis of the beamline. A calculation model is provided to analyze characteristics of beamlines attached to bend magnet sources. 相似文献
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LI Chao-Yang PAN Hai-Bin WEI Shen PAN Cong-Yuan AN Ning DU Xue-Wei ZHU Jun-Fa WANG Qiu-Ping 《中国物理C(英文版)》2013,(11):104-107
Tile photoelectron spectroscopy beamline at National Synchrotron Radiation Laboratory (NSRL) is equipped with a spherical grating monochromator with the included angle of 174. Three gratings with line density of 200, 700 and 1200 lines/mm are used to cover the energy region from 60 eV to 1000 eV. After several years' operation, the spectral resolution and flux throughput were deteriorated, and realignment was necessary to improve the performance. First, the wavelength scanning mechanism, the optical components position and the exit slit guide direction are aligned according to tile design value. Second, the gratings are checked by Atomic Force Microscopy (AFM) and then the gas absorption spectrum is measured to optimize the focusing condition of the monoehromator. The spectral resolving power E/AE is recovered to the designed value of 1000@244 eV. The flux at the end station for the 200 lines/ram grating is about 1010 photons/sec/200 mA, which is in accordance with the design. The photon flux for the 700 lines/mm grating is about 5 108 photons/sec/200mA, which is lower than expected. This poor flux throughput may be caused by carbon contamination on the optical components. The 1200 lines/ram grating has roughness much higher than expected so the diffraction efficiency is too low to detect any signal. A new grating would be ordered. After the alignment, the beamline has significant performance improvements in both the resolving power aim the flux throughput for 200 and 700 lines/ram gratings and is provided to users. 相似文献