检索结果-南通市图书馆

6 - 1 Operation Status of HIRFL in 2013

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

IMP & HIRFL Annual Report 2013年第1期 225-228页

作者： Yuan Youjin xia jiawen Yang Jiancheng Yang Weiqing HIRFL Operation Group

RF and field measurements of the SSC-LINAC RFQ

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2014年第7期57卷 1311-1317页

作者： LIU Ge LU YuanRong YIN XueJun ZHANG xiaoHu DU Heng JIANG PeiYong LI ZhongShan LI xiaoNi HE Yuan WANG Zhi GAO ShuLi YANG YaQing ZHU Kun YAN XueQing CHEN JiaEr YUAN YouJin xia jiawen ZHAO HongWei State Key Lab of Nuclear Physics and Technology Peking University Institute of Modern Physics Chinese Academy of Sciences

The 53.667 MHz continuous-wave heavy ion RFQ has been designed and manufactured for the SSC-LINAC project.This four-rod RFQ accelerates ions with maximum mass to charge ratio of 7 from 3.728 keV/u to 143 keV/u.Measurements have been carried out to check the RF performance of the cavity and the quality of the electric field.The S11 of the power coupler is adjusted to better than-44 dB,and the Q0 of the cavity is 6440.The quality of the electric field is evaluated by the perturbation method.The measurement procedure and data analysis will be discussed in detail.The error due to gravity of the perturbation bead has been corrected by averaging the fields in different quadrants.As a result,the unflatness of the electric field is±2.5%,and the dipole field component distributes from 0%to 20%in different longitudinal positions,which indicates the asymmetry of the quadrupole field.The unflatness of the quadrupole field distribution represents a good agreement with the simulation results.High power RF test and beam commissioning of the RFQ are on schedule in early 2014.

关键词：直线加速器实地测量 RFQ 询价最大质量功率耦合器 RF性能数据分析

6-1 Operation Status of HIRFL in 2014

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

IMP & HIRFL Annual Report 2014年第1期 247-248页

作者： Yuan Youjin xia jiawen Yang Jiancheng Yang Weiqing Mao Lijun HIRFL operation group 不详

Since beginning of 2014, HIRFL has been operated about 7 272 machine hours, including 626 h for the machinepreparation, 998.5 h for the machine commissioning, 158.5 h for equipment failure period, 4 964.5 h for experimenttarget time and 235 h for the machine study. Several different operation modes were included: 1 321.5 h for theindependent operation of SFC; 2 631 h for operation of the combination of SFC+SSC; 1 422 h for operation of thecombination of SFC+CSRm, 1 897.5 h for the operation of the combination of SFC+CSRm+CSRe, and 289.5 h isthe others.

关键词： Operation Status HIRFL

6-1 Operation Status of HIRFL in 2016

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IMP & HIRFL Annual Report 2016年第1期 243-244页

作者： Yuan Youjin xia jiawen Yang Jiancheng Yang Weiqing Mao Lijun HIRFL operation group 不详

In 2016,HIRFL has 7 488 machine hours,including 616 h for the machine preparation and 994 h for the machine commissioning due to beam change,228.5 h for equipment failure period,5 439.5 h for experiment target time,108 h for machine study.Several different operation modes are included,2 437 h for the independent operation of SFC;2 948 h for the combination operation of SFC+SSC;462 h for the combination operation of SFC+CSRm;1 641 h for operation of the combination of SFC+CSRm+CSRe;and 102 h for others.

关键词：

6-1 Operation Status of HIRFL in 2015

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IMP & HIRFL Annual Report 2015年第1期 259-260页

作者： Yuan Youjin xia jiawen Yang Jiancheng Yang Weiqing Mao Lijun HIRFL operation group 不详

During 2015 the HIRFL accelerator of IMP delivered 26 species of heavy for experiments related on nuclear physics, atomic physics, material sciences, radio-biology researches and machine studies, including 13 species of them were accelerated first time in HIRFL. The typical ion beams provided by HIRFL in 2015 are listed in Table 1.

关键词： Operation Status HIRFL

Operation Status of HIRFL in 2019

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IMP & HIRFL Annual Report 2019年第1期 237-238页

作者： Yang Weiqing xia jiawen Yang Jiancheng Mao Lijun Yin Xuejun Yuan Youjin Shen Guodong HIRFL operation group 不详

In 2019,the HIRFL facility has operated for 7392 h,including 586.5 h for the machine preparation,830 h for the machine commissioning due to beam change,208.5 h for the equipment failure period,5312 h for the experimen... 详细信息

关键词： HIRFL beam operated

First mass measurement of short-lived nuclides at HIRFL-CSR

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2009年第24期54卷 4749-4752页

作者： XU HuShan TU xiaoLin YUAN YouJin xia jiawen ZANG YongDong WANG Meng MAO RuiShi HU ZhengGuo MEI Bo SHUAI Peng ZHU ZhiChao TANG ShuWen GENG Peng LIU Yong ZHAO TieCheng ZHANG XueYing YANG JianCheng MAO LiJun ZHANG YuHu ZHOU xiaoHong HUANG WenXue xiaO GuoQing ZHAO HongWei ZHAN WenLong Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China

Recent commissioning of the HIRFL-CSR has demonstrated its ability to perform direct mass measurement for short-lived nuclides. Projectile fragments produced by the 78Kr ions at 481.88 MeV/u were separated with the new radioactive beam line in Lanzhou (RIBLL2), and injected into and stored in the experimental storage ring (CSRe). By operating the CSRe as an isochronous mass spectrometry, a typical mass resolution around 2.0×10?5 has been achieved. The masses for 63Ge, 65As and 67Se were measured for the first time. The measured masses are compared with theoretical predictions and the location of the proton drip-line for As isotopes is discussed. The implication of the 65As mass in the astrophysical rapid proton capture process has also been addressed.

关键词：兰州重离子加速器质量测量社会责任核素兰州放射性束流线企业天体物理学一次测量

Study on the longitudinal capture efficiency of a CW heavy-ion Linac

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Radiation Detection Technology and Methods 2022年第3期6卷 391-400页

作者： Qiyu Kong Xuejun Yin Zhongshan Li Peng Jin Heng Du xiaoni Li Zheng Liu Youjin Yuan jiawen xia Jiancheng Yang Weiqing Yang Zhe Xu Junxia Wu Yong Zhang Long Jing Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Huizhou Research Center of Ion Science Huizhou 516003China Lanzhou University Lanzhou 730000China

Purpose The continuous-wave(CW)linear accelerator,SSC-Linac,has been put into operation successfully as the new injector of Separate Sector Cyclotron(SSC)for Heavy Ion Research Facility in Lanzhou(HIRFL).The SSC-Linac is operated at the frequency of 53.667 MHz,which is the four times of the SSC operating frequency.In order to improve the longitudinal capture efﬁciency and increase the beam current extracted from the SSC,an independent multi-harmonics buncher(MHB)operating at a fundamental frequency of 13.417 MHz had been designed and manufactured.Method This buncher adopts the dual-gap structure and sawtooth waveform is generated by multi-harmonics synthetized technology.Beam dynamics simulation with MHB was carried out and discussed in this paper.Furthermore,the beam commissioning using 84Kr14+had been performed on SSC-Linac.Results and conclusion The measured maximum capture efﬁciency 86.5%was obtained,which was well agreed with the simulation results.Due to the successful commissioning of MHB and the outstanding-performance of SSC-Linac,the extracted beam current from SSC has been improved one order of magnitude higher than before.

关键词： Heavy ion Linear accelerator Multi-harmonics buncher Capture efﬁciency

resign of Linear Injector for SSC

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

近代物理研究所和兰州重离子加速器实验室年报：英文版 2009年第1期 256-257页

作者： He Yuan Wang Zhijun xiao Chen Du xiaonan Zhao Hongwei xia jiawen Lu Yuanrong Wang Zhi Zhu Kun Kang Minglei Zhou Ouanfeng Chen Jiaer 不详 PKU-IMP RF LINAC Research Center for Heavy Ions.