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A 16-Channel high-resolution time and charge measurement module for the external target experiment in the CSR of hirfl

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Nuclear Science and Techniques 2014年第1期25卷 27-32页

作者：赵雷康龙飞周家稳刘树彬安琪 State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Department of Modern Physics University of Science and Technology of China

High precision time measurement is required in the readout of the neutron wall and TOF walls in the external target experiment of the Cooling Storage Ring(CSR) project in the Heavy Ion Research Facility in Lanzhou(hirfl).Considering the time walk correction,both time and charge are measured in the readout *** this 16-channel measurement module,time and charge information are digitized by TDCs at the same time based on the Time-Over-Threshold(TOT) method;meanwhile,by employing high-density ASIC chips,the electronics complexity is effectively *** results indicate that this module achieves a time resolution better than 25 ps and a charge resolution better than 5%over the input amplitude range from 50 mV to 3V.

关键词：时间测量 hirfl 电荷测量测量模块企业社会责任高解析度 16通道实验

Neutron dose measurement in carbon ion radiation therapy at hirfl(IMP)

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Chinese Physics C 2010年第5期34卷 548-550页

作者：苏有武李宗强李武元王桂玲 Institute of Modern Physics Chinese Academy of Science Graduate University of Chinese Academy of Sciences

For radiation protection purposes, the neutron dose in carbon ion radiation therapy at the hirfl （Heavy Ion Research Facility in Lanzhou） was investigated. The neutron dose from primary ^12C ions with a specific energy of 100 MeV/u delivered from SSC was roughly measured with a standard Anderson-Broun rem-meter using a polyethylene target at various distances. The result shows that a maximum neutron dose contribution of 19 mSv in a typically surface tumor treatment was obtained, which is less than 1% of the planed heavy ion dose and is in reasonable agreement with other reports. Also the T-ray dose was measured in this experiment using a thermo luminescent detector.

关键词： heavy ion therapy hirfl neutron dose

Magnetic alloy cores for the hirfl-CSRm compressor cavity

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Nuclear Science and Techniques 2011年第2期22卷 118-121页

作者： MEI Lirong XU Zhe YUAN Youjin JIN Peng BIAN Zhibin ZHAO Hongwei Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

Four types of magnetic alloy cores,labeled as V1,V2,A1 and A2,were produced by Liyuan ***.,for the radio frequency compression cavity of *** this work,their permeability,quality factor (Q value) and shunt impedance were measured before installing them into the *** results show that the V1,V2 and A2 have higher permeability and shunt impedance,and lower Q value,and are suitable to the radio frequency compression cavity.

关键词： hirfl CSRM 压缩机磁合金磁芯无线电频率阻抗测量品质因数

Status and Prospects of hirfl Experiments

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原子核物理评论 2009年第S1期26卷 7-15页

作者： XU Hu-shan (Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China) Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

The research activities at hirfl cover the fields of radio-biology,material science,atomic physics,and nuclear physics. This report mainly concentrates on the experiments of nu-clear physics with the existing and plan... 详细信息

关键词： hirfl CSRm CSRe ETF

hirfl cooling water-monitoring system design and construct

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Radiation Detection Technology and Methods 2018年第2期2卷 26-30页

作者： Yunjie Li Yanyu Wang Detai Zhou Jia Yin Jianjun Su Chinese Academy of Sciences University Beijing 100000China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

Background hirfl is a heavy ion accelerator built by the Institute of Modern Physics,Chinese Academy of Sciences,which constitutes a total length of over 900 m by the SFC,SSC,CSRm,CSRe and so *** bears a lot of research task of the country,so to ensure its safe operation is very *** Cool-water system is a key part in hirfl,and the parameters of the cool-water system need to be monitored before an accident *** This article describes three aspects of the system,from the water leakage detection,pressure monitoring,to the water-level monitoring.A complete monitor system was designed and constructed,including the hardware structure;the data transfer mode,as well as specific control program.C++,FLASH and SCADA are used in the monitoring *** Fault alarm was performed timely and accurately by the monitoring system,and many accidents were *** Water system monitoring is an important part of the accelerator control *** will also play a major role in the construction of large-scale scientific device named HIAF in the further.

关键词： hirfl SCADA Water leakage detection Water pressure monitoring Water level monitoring

Ion pump control system designed for hirfl

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Radiation Detection Technology and Methods 2021年第1期5卷 78-82页

作者： Tian Ruixia Zhou Detai Su Jianjun Zhang Jianchuan Wang Yanyu Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

Background Ion pump control system of hirfl is designed based on the real-time distributed control software,*** hardware architecture,communication principle,database design and interlock design are introduced and elaborated in the *** PLC has been adopted to realize functions such as control monitoring and data *** protect ion has been designed for ion pump control system to prevent damaging from high *** The test results show that the system has fast response function and high-speed data processing during the beam running and *** response time of the system could reach 100 ms,the rate of data acquisition reaches to 10 time/s and the interlock protection time less than 40 *** The reliable and stable long-term operation of the vacuum system indicates that the performance has been constantly improved with the continuous optimization of the ion pump control system.

关键词： hirfl EPICS Ion pump controller PLC

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hirfl中的束流纵向运动

强激光与粒子束 1999年第6期11卷 765-770页

作者：唐靖宇尹全民中国科学院近代物理研究所兰州31信箱730000

对兰州重离子加速器的两台等时性回旋加速器中的束流纵向运动作了简单分析，主要介绍两条束运线上的几台聚束器的物理设计。超低能束运线－ＳＦＣ轴向注入线上的两台聚束器采用了线性聚束器，并提出了用半频聚束来提高两台回旋加速器的... 详细信息

对兰州重离子加速器的两台等时性回旋加速器中的束流纵向运动作了简单分析，主要介绍两条束运线上的几台聚束器的物理设计。超低能束运线－ＳＦＣ轴向注入线上的两台聚束器采用了线性聚束器，并提出了用半频聚束来提高两台回旋加速器的纵向匹配效率的新方法。低能束运线（ＢＬ１）上的聚束器采用多工作模式以解决加速粒子和能量范围宽的问题。

关键词：束流纵向运动聚束器 hirfl 重离子加速器