共查询到19条相似文献,搜索用时 62 毫秒
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上海光源储存环X-ray针孔相机系统设计 总被引:1,自引:0,他引:1
上海光源(SSRF)储存环X-ray针孔相机系统主要由X-ray引出前端、衰减片、小孔、靶片、相机、PXI控制器及图像采集等构成,数据采集处理软件在LabVIEW平台上开发,与控制系统的接口通过EPICS Shared Memory IOCcore技术实现。2009年8月开始的长时间在线运行证明引出前端是安全的,在300mA运行时,测量引出窗的最高温度≤36℃。该系统设计合理、性能稳定,可在线实时测量数十μm束团横向截面尺寸,从而实现3.9nm·rad发射度的测量。 相似文献
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用于中子照相的2MeVRFQ加速器须注入50 mA@50keV的脉冲D+离子束,束流占空比为1/10,发射度0.2 π-mm-mrad.а=1.93,β=5.16cm/rad.为此,我们建立了两台基于2,415 GHz的永磁微波离子源实验台.当微波功率小于450 w时,引出氢离子流的总流强大于80 mA,质子比好于90%,束流的归一化均方根发射度约为0.2-0.3π-mm-mrad.LEBT(低能束流输运线)实验台使用-个半包围结构螺线管磁透镜,束流传输效率大于80%.为优化源体设计,对源室尺度和放电室内衬材料研究,为源体的优化提供了依据. 相似文献
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上海光源线站工程(二期)对机器保护系统提出的高要求是现有系统无法满足的,需对机器保护系统进行升级改造。本文使用FL-net技术实现了光源储存环所有联锁可编程逻辑控制器单元间的数据共享,解决了联锁系统跨单元通信的问题。机器保护系统的远程控制基于分布式EPICS设计,扩充部分通过统一接口形式和使用层次化设计方法,避免了对原系统的改动。新系统通过测试,在线运行可靠稳定,单元间联锁响应时间小于21 ms,满足加速器运行的需求,且改造后的系统更灵活、易扩充,可满足日后不同的联锁需求。 相似文献
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《核技术(英文版)》2015,(5)
The multi-bunch injection adopted at Shanghai Synchrotron Radiation Facility(SSRF) increases the injection rate greatly, with much less injection time than that of single bunch injection. It reduces massively the beam failure time during users' operation and prolongs the pulsed injection hardware lifetime. In this paper, the scheme to produce multi bunches for the RF electron gun is described. The filling result and beam orbit stability for top up operation is discussed. 相似文献
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Study of orbit stability in the SSRF storage ring 总被引:1,自引:0,他引:1
In this paper, analysis of the beam orbit stability and conceptual study of the dynamic orbit feedback in the SSRF storage ring are presented. It is shown that beam orbit position movement at the photon source points is smaller than the orbit stability requirements in horizontal plane, but exceeds the orbit stability requirements in vertical plane. A dynamic global orbit feedback system, which consists of 38 high-bandwidth air-coil correctors and 40 high-precise BPMs, is proposed to suppress the vertical beam orbit position movement. Numerical simulations show that this dynamic orbit feedback system can stabilize the vertical beam orbit position movement in the frequency range up to 100 Hz. 相似文献
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上海光源储存环直流流强监测系统设计 总被引:1,自引:0,他引:1
上海光源储存环调试运行需要一个分辨率达到微安量级的直流流强监测系统.为此设计完成的硬件系统包含一个Bergoz公司NPCT型探头、一个NI公司PXI总线数字电压表模块以及一个PXI总线的输入输出控制器.数据采集处理软件在LabVIEW平台上开发,与控制系统的接口通过EPICS Shated Memory IOCcore技术实现.实验室测试及仿真结果表明该系统直流流强测量分辨率可达2微安,束流寿命相对测量精度可望达到0.5%. 相似文献
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<正>There are various filling patterns in a storage ring for the users' requirements and consideration of the machine performances,such as beam lifetime,instability and chamber heating.These effects have been experimentally studied in the SSRF storage ring for typical filling patterns.Some experiment results and general trends of observations discussed in this paper.The explanations of the results are given. 相似文献
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The Shanghai Synchrotron Radiation Facility (SSRF) is a proposed 3rd generation light source with 3.5 GeV in energy. It is composed of 20 DBA celis resulting in a ring that is about 10 nm-rad in emittance and 396 m in circumference, and provides 10 straight sections of 7.24 m and other 10 straight sections of 5.0 m for the inclusion of insertion devices, injection components and RF cavities. The lattice has high flexibility, and the tunes and beta func-tions can be easily adjusted within a wide range to meet the requirements for different operation modes, including high beta mode and hybrid beta mode with and/or without dispersion in straight sections. In this paper, the results of linear optics design and dynamic aperture study are presented. 相似文献