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| 1 | 6-3 Closed Orbit Correction in Electron Cooler Section at CSRe显示文摘The injecting section and the cooler section are apart from each other at CSRm, while the electron cooler systemis installed at the injecting section of CSRe[1]. So for the CSRe we not only need to satisfy the beam injectingcondition but also need to satisfy the beam cooling condition. At present, we use the ramping bump and the kickerto inject beam, and after injection the bump disappear quickly and the beam goes to the cooling orbit and begincooling. This method has a disadvantage that the beam cooling condition cannot be satised until the bump isdown. In the past year, we try to nd a new method to correct the orbit of cooler section. Instead of using rampingbump we use the xed bump to satisfy the injecting and the cooling condition at the same time. | Tang Meitang Yang Xiaodong Mao Lijun Li Jie Ma Xiaoming Yan Tailai Zhao He Li Peng Chai Weiping Zheng Wenheng Zhang Xiaohu Yang Jiancheng Yuan Youjin Xia Jiawen | 2014 | IMP & HIRFL Annual Report2014，，1： | 0 |
| 2 | 6-4 Longitudinal Electron Cooling Experiments at HIRFL-CSRe显示文摘The electron cooler was installed in one of the straight sections of CSRe which is used to provide high-qualitybeams for experiments. Longitudinally the dynamics of the cooling process have been studied for a series of electronbeam parameters and the friction force was measured with the aid of an RF-buncher for C6+ (122 MeV/u) and O8+(122 MeV/u) ions. The cooling time at different electron beam state have been measured, too. | Zhao He Mao Lijun Yang Xiaodong Li Jie Tang Meitang Ma Xiaoming Yan Tailai Shi Jian Yin Dayu Chai Weipin Sheng Lina Zhang Xiaohu Li Peng Zheng Wenheng Yang Jiancheng Yuan Youjin | 2014 | IMP & HIRFL Annual Report2014，，1： | 0 |
| 3 | Radiative Recombination Rates Enhancement at Low Energy Range in the Heavy Ion Storage Ring CSRm显示文摘Recombination of Ar^(14+),Ar^(15+),Ca^(16+) and Ni^(19+) ions with electrons has been investigated at low energy range at the CSRm.For each ion,the absolute recombination rate coefficients have been measured with electron-ion collision energies from 0 to 1000 meV which include the radiative recombination(RR)and also dielectronic recombination(DR)processes.In order to interpret the measured results. | Khan Nadir Huang Zhongkui Wen Weiqiang Wang Shuxing Wang Hanbing Ma Wanlu Zhu Xiaolong Zhao Dongmei Zhu Linfan Mao Lijun Li Jie Ma Xiaoming Tang Meitang Yin Dayu Yang Weiqing Yang Jiancheng Yuan Youjin Ma Xinwen | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 4 | HIRFL-CSR电子冷却及运行显示文摘Two electron coolers installed at HIRFL-CSR are applied to cool the stored ions for beam accumulation at injection energies(CSRm),or for beam phase space compression and energy compensation on internal target experiments(CSRe).The operation of the electron coolers from Jan.2017 to Jan.2018 is summarized in Table 1.The total operation time is 2328 h and 264 h for CSRm cooler and CSRe cooler,respectively。 | Mao Lijun Yang Xiaodong Li Jie Ma Xiaoming Tang Meitang Zhao He | 2017 | IMP & HIRFL Annual Report2017，，1： | 0 |
| 5 | CSRm电子冷却高压系统设计显示文摘A new 20 kV high voltage system has been designed,developed and operated in CSRm cooler[1],in order to satisfy requirements of pulsed electron cooling experiments[2].Series of FuG high voltage power supplies were used,including a 20 kV main power supply,two 3.5 kV DC power supplies for the anode and suppressor,a3.5 kV power supply for the grid,a 3.5 kV power supply with the maximum current of 3.0 A for the collector and a 20 V power supply for the filament.The sketch of the power supply system is shown in Fig.1 and the main parameters of all power supplies are listed in Table 1.The residual ripple of the main power supply is around 10��5(max.p-p value).A LAN interface was built in the main power supply,and other modules were communicated with the main power supply by optical fiber.A interlock system was used for the grid and anode power supplies,therefore the extracted electron beam can be cutoff quickly(<10 ms)while the leakage current of the main power supply is over threshold. | Ma Xiaoming Mao Lijun Yang Xiaodong Li Jie Tang Meitang Zhao He | 2017 | IMP & HIRFL Annual Report2017，，1： | 0 |
| 6 | HIAF电子冷却装置电子枪与收集器设计显示文摘The 100 kV electron cooler device is designed for the new project HIAF to improve beam quality in SRing[1,2].The design work of the electron gun and the collector for the cooler has been finished and the prototype has being manufactured in the workshop.The structures of the gun and collector are shown in Fig.1. | Tang Meitang Mao Lijun Lu Haijiao Zhao Lixia Yang Xiaodong Li Jie Ma Xiaoming Zhao He | 2017 | IMP & HIRFL Annual Report2017，，1： | 0 |
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