排序方式: 共有13条查询结果,搜索用时 140 毫秒
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2004—2007年BEPC高频系统从常温腔改建到超导腔, 逐渐解决了改频的物理问题和超导技术的工程难题, 实现了与国际先进技术接轨, 并按期保质完成了工程、调束任务. 高频系统是BEPCⅡ工程首个吸收国外超导技术、自主完成集成和调试成功的大型装置; 2006年7月国内首次超导高频大功率试验成功; 2006年11月完成系统联调, 按期投入BEPCⅡ首轮调束; 同年12月首次投入同步辐射运行; 2007年2至5月, 东、西两套超导高频系统在1MV以上的加速电压均已实现正/负电子1.89GeV注入积累和110/114mA对撞; 在同步辐射运行中, 逐渐达到2.5GeV/250mA、束流功率100kW, 接近国外同类机器水平; 束流试验证明两套高频系统的 相似文献
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Design study on very low Beta spoke cavity for China-ADS 总被引:1,自引:0,他引:1
Very low Beta superconducting spoke cavity is one of the key challenges for the China-ADS project. In this paper, a new structure of 3βλ/2 spoke cavity is first studied in detail. Its RF and mechanical properties are simulated using CST-MWS and ANSYS, and compared with the traditional βλ/2 spoke structure. 相似文献
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Twelve very low Beta superconducting single spoke cavities, whose Beta is only 0.12 (Spoke012) when operating at 325 MHz, are adopted in Injector I for China-ADS linac. This type of spoke cavity is believed to be one of the key challenges for its very low geometric Beta. So far, in collaboration with Peking University and Harbin Institute of Technology, IHEP has successfully designed, fabricated, and tested the Spoke012 prototype cavity. This paper presents the details of the design, fabrication and test results for Spoke012 prototype cavity. 相似文献
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用SLS—胶束荧光法监测延胡索乙素的血药浓度 总被引:1,自引:0,他引:1
廷胡索乙素是中药元胡中镇痛作用较强的有效成分,本文在8种表面活性剂中,筛选出十二烷基磺酸钠为胶束试剂,在最佳实验条件下,对灌胃后24h内的兔血浆中所含延胡索乙素的浓度进行劝态监测,求出最大吸收峰浓度为1.83μg/mL,达峰时间为2h,24h代谢后血浆中残留延胡索乙素的浓度为0.430μg/mL,实验表明口服元胡水煎剂其镇疼作用可延续6h。 相似文献
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延胡索乙素在兔体内脏的分布滞留研究 总被引:2,自引:0,他引:2
本文为了对药物在脏器中的分布滞瘤问题进行研究,首先给家兔口服元胡水煎液,24h之后,再采用高灵敏的胶束荧光法,对主要脏器中所含延胡索乙素进行测定,所测心肝、肾中的含量分别为0.0798μg/g,1.40μg/g,5.14μg/g,效果良好。 相似文献
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The simulation and analysis for electron multipacting phenomenon in a low β spoke superconducting cavity in ADS proton accelerator are proposed. Using both CST and Track3P codes, the electron multipacting calculation for β=0.12 spoke superconducting cavity is implemented. The methods of multipacting calculation on both codes are studied and described. With the comparison between the calculation results and the cavity vertical test result, the accuracy and reliability of different codes on calculating multipacting are analyzed. Multipacting calculation can help to understand the results of vertical test and also can help to do the optimization in cavity design. 相似文献
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米正辉 孙毅 潘卫民 王光伟 李中泉 戴建枰 马强 林海英 徐波 黄泓 王群要 许玉芬 赵光远 黄彤明 沙鹏 张新颖 孟繁博 李菡 陈旭 赵丹阳 张娟 彭应华 《中国物理 C》2013,(8):70-74
The tuning system plays a very important role when a superconducting cavity is in operation. It cooperates with other control loops to adjust the cavity frequency with high precision, reduce the reflection power, guarantee the stability of beam, and ensure the safety of the superconducting cavity. This paper focuses mainly on the tuning system working principle, the working state and problems that Beijing Electron Positron Collider (BEPC ) has encountered during operation. 相似文献