LECR3 (Lanzhou Electron Cyclotron Resonance ion source No.3) which aims to produce intense highly charged ion beams for atomic physics research, was designed and constructed based on LECR2 (Lanzhou Electron Cyclotron ...LECR3 (Lanzhou Electron Cyclotron Resonance ion source No.3) which aims to produce intense highly charged ion beams for atomic physics research, was designed and constructed based on LECR2 (Lanzhou Electron Cyclotron Resonance ion source No.2) with high B mode. In year 2003, according to the arrangements of atomic physics research experiments and the ECR ion source research activities, ion beams of 14 elements were produced on LECR3. The elements include ^16O, ^40At, ^129Xe, ^63Cu, ^65Zn, ^56Fe, ^58Ni, ^26Mg, ^208Pb, ^35C1, ^37C1, ^28Si, ^84Kr and ^181Ta. Many of them were tested for the first time on LECR3 ion source.展开更多
In order to study the transmission properties of multi-charged ion beams between the ECR ion source and the analyzing magnet, a new diagnostic system composed of three Wien-filters with three single-wires has been bui...In order to study the transmission properties of multi-charged ion beams between the ECR ion source and the analyzing magnet, a new diagnostic system composed of three Wien-filters with three single-wires has been built and installed on the IMP ECR source test bcnch. The single-wire is used to measure the beam profile and the beam density distribution, and the Wien-filter is used to measure the charge state distribution of ion beam.展开更多
There is an increasing requirement of high injection current and highly charged ion beams for accelerators at many laboratories, such as CERN, GSI, GANIL and IMP, with the development of super-conducting ECR source in...There is an increasing requirement of high injection current and highly charged ion beams for accelerators at many laboratories, such as CERN, GSI, GANIL and IMP, with the development of super-conducting ECR source in recent.years. In this case, the space charge effect becomes a major concern when the beam current is as high as tens of mA. In fact, the faradic field induced by the image charges will be come into the metallic surfaces while the beams are transported in a vacuum tube or in between two plates. In order to ensure studying the space charge effect in reason, it is necessary to investigate the effect from such a field.展开更多
A new 14.5 GHz Electron Cyclotron Resonance (ECR) ion source has been constructed over the last two years. The source was designed and tested by making use of the latest results from ECR ion source development, such a...A new 14.5 GHz Electron Cyclotron Resonance (ECR) ion source has been constructed over the last two years. The source was designed and tested by making use of the latest results from ECR ion source development, such as high mirror magnetic field, large plasma volume, and biased probe. 140uA of O^7+, 185uA of Ar^11+ and 50uA of Xe^26+ could be produced with a RF power of 800 W. The intense beams of highly charged metallic ions are produced by means of the method of a metal evaporation oven and volatile compound through axial access. The test results are 130uA of Ca^11+, 70uA of Ca^12+ and 65uA of Fe^lo+. The ion source has been put into operation for the cyclotron at the institute of Modern Physics (IMP).展开更多
文摘LECR3 (Lanzhou Electron Cyclotron Resonance ion source No.3) which aims to produce intense highly charged ion beams for atomic physics research, was designed and constructed based on LECR2 (Lanzhou Electron Cyclotron Resonance ion source No.2) with high B mode. In year 2003, according to the arrangements of atomic physics research experiments and the ECR ion source research activities, ion beams of 14 elements were produced on LECR3. The elements include ^16O, ^40At, ^129Xe, ^63Cu, ^65Zn, ^56Fe, ^58Ni, ^26Mg, ^208Pb, ^35C1, ^37C1, ^28Si, ^84Kr and ^181Ta. Many of them were tested for the first time on LECR3 ion source.
文摘In order to study the transmission properties of multi-charged ion beams between the ECR ion source and the analyzing magnet, a new diagnostic system composed of three Wien-filters with three single-wires has been built and installed on the IMP ECR source test bcnch. The single-wire is used to measure the beam profile and the beam density distribution, and the Wien-filter is used to measure the charge state distribution of ion beam.
文摘There is an increasing requirement of high injection current and highly charged ion beams for accelerators at many laboratories, such as CERN, GSI, GANIL and IMP, with the development of super-conducting ECR source in recent.years. In this case, the space charge effect becomes a major concern when the beam current is as high as tens of mA. In fact, the faradic field induced by the image charges will be come into the metallic surfaces while the beams are transported in a vacuum tube or in between two plates. In order to ensure studying the space charge effect in reason, it is necessary to investigate the effect from such a field.
基金Equipment Upgrading Fund and '9.5' Fund for Fundamental Research from the Chinese Academy of Sciences
文摘A new 14.5 GHz Electron Cyclotron Resonance (ECR) ion source has been constructed over the last two years. The source was designed and tested by making use of the latest results from ECR ion source development, such as high mirror magnetic field, large plasma volume, and biased probe. 140uA of O^7+, 185uA of Ar^11+ and 50uA of Xe^26+ could be produced with a RF power of 800 W. The intense beams of highly charged metallic ions are produced by means of the method of a metal evaporation oven and volatile compound through axial access. The test results are 130uA of Ca^11+, 70uA of Ca^12+ and 65uA of Fe^lo+. The ion source has been put into operation for the cyclotron at the institute of Modern Physics (IMP).
