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Precise Measurement of Beam Extraction Efficiency for CRM

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Precise Measurement of Beam Extraction Efficiency for CRM

作者： GUAN Feng-ping LI Zhen-guo XIE Huai-dong WEN Li-peng GE Tao liu geng-shou

The extraction of the CRM is using a stripping foil with a water-cooled high-power Faraday cup behind the stripping foil to measure the proton *** efficiency is nearly 100%.By the end of 2009,the extraction beam current has reached 200μA. 1 Precise measurement of beam extraction efficiency After the H goes through stripping foil,it loses two *** proton is curved by the magnetic field into beamline and measured by the Faraday *** beam loss can be calculated by the beam diagnostic system through measuring the electron signal on stripping foil and proton current on Faraday

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Design and Experiments of Helical Resonator for Beam Pulsing System

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Design and Experiments of Helical Resonator for Beam Pulsing...

作者： LI Peng-zhan liu geng-shou YIN Zhi-guo AN Shi-zhong SONG Guo-fang ZHANG Tian-jue

The beam with short time-structure can be produced by the chopper in beam pulsing system. According to the requirement,sine wave signal with 2.2 MHz,6 kV amplitude will be applied to chopper. Serial/parallel resonance with lumped components has been tried in former experiment and the results showed that the existence of radiation impedance in open space restrains the increase of equivalent parallel impedance and efficiency of RF *** helical resonator is adopted to make an improvement based on simulation and *** tests have shown that the design of helical resonator satisfies the physical requirement.

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不同海拔对幼年牦牛生长发育的观察

青海畜牧兽医杂志 2014年第3期44卷 18-19页

作者：刘更寿青海省大通种牛场 810102

对幼年牦牛断乳后分别在海拔3200m和4229m地区饲养,结果高海拔饲养的牦牛的体重和各项体尺均显著高于低海拔饲养的牦牛。

关键词：幼年牦牛海拔生长发育

Installation and Commissioning of CYCIAE-100 RF Cavity

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Installation and Commissioning of CYCIAE-100 RF Cavity

作者： JI Bin XING Jian-sheng liu geng-shou YIN Zhi-guo ZHANG Tian-jue LEI Yu FU Xiao-liang LI Peng-zhan LV Yin-long ZHU Peng-fei FU Li-cheng liu Jie ZHANG De-zhi CUI Bai-yao DONG Huan-jun WANG Zhen-hui Division of the BRIF Project

The RF cavity is used to establish electrical field for the particle acceleration in the cyclotron,the stability of the RF cavity affects the RF system directly.A RF cavity with high quality can reduce thepower consum...

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原发性小肠肿瘤16例诊治临床表现特点分析

苏州大学学报（医学版） 2002年第1期22卷 68-69,71页

作者：钱爱民刘根寿邢春根苏州大学附属第二医院苏州215004

目的　总结原发性小肠肿瘤的诊断和治疗经验。方法　回顾性分析 1992～ 1999年收治的 16例原发性小肠肿瘤病例资料。结果　本组包括 8例良性肿瘤 ,8例恶性肿瘤 ,术前误诊率为 6 2 .5 %。其主要临床表现为出血、腹痛、梗阻和腹块。术前X... 详细信息

目的　总结原发性小肠肿瘤的诊断和治疗经验。方法　回顾性分析 1992～ 1999年收治的 16例原发性小肠肿瘤病例资料。结果　本组包括 8例良性肿瘤 ,8例恶性肿瘤 ,术前误诊率为 6 2 .5 %。其主要临床表现为出血、腹痛、梗阻和腹块。术前X线、B超诊断阳性率不高 ,CT扫描和选择性血管造影 ,核素扫描阳性率分别为 75 %、75 %和 10 0 %。 6例经剖腹探查而确诊。结论　原发性小肠肿瘤难于早期发现 ,应将术前的CT扫描 ,选择性血管造影 ,核素扫描等手段和剖腹探查 ,术中内镜 ,术中冰冻病理等方法相结合 ,以提高诊断和治疗水平。

关键词：原发性小肠肿瘤诊断治疗临床表现

Design and Construction Progress of the Main Magnet for CYCIAE-100

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Design and Construction Progress of the Main Magnet for CYCI...

作者： ZHANG Tian-jue LU Yin-long ZHONG Jun-qing JING Wei LIN Jun CHEN Rong-fan WANG Chuan CHU Cheng-jie ZOU Jian WANG Zhen-hui liu geng-shou WEI Su-min YAO Hong-juan BI Yuan-jie YANG Jian-jun CAI Hong-ru YANG Fang

The main magnet of CYCIAE-100 is mainly comprised of 4 pairs of sector poles,4 return yokes and top/bottom *** main magnet weighs about 416 ton after fine machining,belonging to heavy precision *** is very challenging to meet the high precision requirement of the machining and assembly for some key *** year 2009 has witnessed significant progress on the main magnet *** acceptance check of roughcasts of top/bottom yokes and return yokes has been successfully passed for the 100 MeV machine through the measurement of magnetic properties,one important feature to identify the *** contract on the machining and assembly of main

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100MeV强流回旋加速器径向靶的研制

原子能科学技术 2017年第5期51卷 934-937页

作者：管锋平张天爵温立鹏解怀东李振国刘更首曹磊吕银龙宋国芳张素平中国原子能科学研究院串列加速器升级工程部北京102413

在100MeV强流回旋加速器调试过程中,需对束流在加速器内的轴向和径向参数进行测量。径向靶系统是束流诊断系统中用于获取上述参数的主要部件,本文研制了3套阻挡式径向靶系统,并安装到加速器主体,获得了束流在连续加速过程中的轴向和径... 详细信息

在100MeV强流回旋加速器调试过程中,需对束流在加速器内的轴向和径向参数进行测量。径向靶系统是束流诊断系统中用于获取上述参数的主要部件,本文研制了3套阻挡式径向靶系统,并安装到加速器主体,获得了束流在连续加速过程中的轴向和径向分布,为加速器运行提供了相应束流参数,并为后续加速器升级工作提供了必要的条件。

关键词：径向靶束流诊断回旋加速器强流束

Total Synthesis of N-Methylsansalvamide A

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Chinese Chemical Letters 2006年第6期17卷 761-764页

作者： shou Xin liu Yan Lou geng Xia TIAN Xiao Li ZHEN Jian Rong HAN College of chemical ＆ pharmaceutical Engineering Hebei University of Science ＆ Tecnnology Shijiazhuang 050018

Total synthesis of N-methylsansalvamide A was accomplished in solution phase by a convergent approach. An N-Boc-td-depsipepide 6 and a dipeptide ester 10 were prepared in the yield of 89% and 91%, respectively. Cycliz... 详细信息

关键词： Synthesis N-methylsansalvamide A solution phase cyclic depsipeptide.

Conditioning for the RF Resonant Cavities of the CYCIAE-100

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Conditioning for the RF Resonant Cavities of the CYCIAE-100

作者： YIN Zhi-guo JI Bin ZHAO Zhen-lu FU Xiao-liang LEI Yu WANG Chuan YANG Jian-jun WEI Jun-yi LI Peng-zhan LV Yin-long ZHANG Tian-jue GE Tao CAI Hong-ru PAN Gao-feng ZHU Peng-fei AN Shi-zhong XING Jian-sheng YIN Meng CAO Lei ZHANG Su-ping WEN Li-peng HOU Shi-gang WU Long-cheng liu geng-shou LI Zhen-guo CUI Bai-yao DONG Huan-jun Division of the BRIF Project

The CYCIAE-100 cyclotron developed by the BRIF project group had finished installation of its main equipments and parts in *** field mapping of the main magnet has been done *** Dec.13,2012,the vacuum of the main chamber reached 4×10mbar,conditioning for the RF resonant cavities were started shortly *** the cyclotron is opened the interior surface is exposed to air and

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