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6 results on '"Yahong Xie"'

1. The trajectory simulation and optimization of ion source chimney for SC200 cyclotron

Author

Gen Chen, Xu Shiwen, Chen Yuqian, Oleg Karamyshev, Chen Yonghua, Nikolay Morozov, E. V. Samsonov, Yuntao Song, Bi Yanfang, Galina Karamysheva, Liusi Sheng, Grigori Shirkov, Yahong Xie, Chongdong Hu, Yang Qingxi, and Kaizhong Ding

Subjects
Test bench, Materials science, Particle therapy, business.industry, medicine.medical_treatment, Cyclotron, Ion source, law.invention, Optics, Physics::Plasma Physics, law, medicine, Physics::Accelerator Physics, Thermal emittance, Chimney, Beam emittance, business, Beam (structure)
Abstract

SC200 is an isochronous cyclotron which generate 200 MeV, 500 nA proton for particle therapy. As an important component of the cyclotron, the ion source chimney needs to be tested and optimized. The simulation results and optimization of ion source in test bench for SC200 are described in this paper. The simulation results show that the extraction slit with different sizes and shapes has an influence on the emittance of the extraction beam. To verify the simulation results, the performance of the designed ion source chimney with optimized slits was measured, including the beam current intensity and the beam emittance.

Published
2018

2. The construction of the inner ion source for SC200 compact superconducting cyclotron

Author

Chen Yuqian, Chundong Hu, Yanping Zhao, Galina Karamysheva, Yuntao Song, Yahong Xie, Oleg Karamysheva, Nikolay Morozov, Gen Chen, Xu Shiwen, Grigori Shirkov, and E. V. Samsonov

Subjects
Physics, Proton, Cyclotron, Plasma, Hot cathode, Ion source, law.invention, Nuclear physics, Physics::Plasma Physics, law, Penning ionization, Physics::Accelerator Physics, Proton therapy, Beam (structure)
Abstract

The SC200 compact superconducting cyclotron is supposed to contribute on the proton therapy under the collaboration of the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) and the Joint Institute for Nuclear Research (JINR). The energy of cyclotron is 200 MeV with the maximum proton beam current of ∼400 nA from the cyclotron outlet. The hot cathode Penning Ionization Gauge (PIG) type proton source will be used in the cyclotron. The purpose of the article is to introduce the inner ion source from the design, simulation and dedicated test. Through the analysis and bench experiment results, the ion source shows a good performance which can provide enough protons to reach the cyclotron beam current. The lifetime of filament can reach more than 50 hours and the source operates at least 1h continuously. A layer-to-layer intensity modulation of the scanned beam is realized with the filament current and the arc voltage that need to vary the extracted beam current between maximum and zero. For the research the request for higher flexibility, in particular for faster beam intensity modulation. In order to explore capabilities of the machine for such research mode, a real-time control system of the arc power supply for ion source has been developed and will also be presented.

Published
2018

3. Progress and future developments of high current ion source for neutral beam injector in the ASIPP

Author

Caichao Jiang, Nbi Team, Yahong Xie, Zhimin Liu, Lizhen Liang, Sheng Liu, Peng Sheng, Yongjian Xu, Yuanlai Xie, and Chundong Hu

Subjects
Ion beam, Chemistry, business.industry, Particle accelerator, Plasma, Hot cathode, Ion gun, Ion source, Ion, law.invention, Optics, Ion beam deposition, law, Atomic physics, business
Abstract

A high current hot cathode bucket ion source, which based on the US long pulse ion source is developed in Institute of Plasma Physics, Chinese Academy of Sciences. The ion source consists of a bucket plasma generator with multi-pole cusp fields and a set of tetrode accelerator with slit apertures. So far, four ion sources are developed and conditioned on the ion source test bed. 4 MW hydrogen beam with beam energy of 80 keV is extracted. In Aug. 2013, EAST NBI 1 with two ion source installed on the EAST, and achieved H-mode plasma with NBI injection for the first time. In order to achieve stable long pulse operation of high current ion source and negative ion source research, the RF ion source with 200 mm diameter and 120 mm depth driver is designed and developed. The first RF plasma generated with 2 kW power of 1 MHz frequency. More of the RF plasma tests and negative source relative research need to do in the future.

Published
2015

4. The Construction of the Inner Ion Source for SC200 Compact Superconducting Cyclotron.

Author

Gen Chen, Shiwen Xu, Yahong Xie, Yuntao Song, Yuqian Chen, Chundong Hu, Yanping Zhao, Samsonov, Evgeny Vasilievich, Karamysheva, Galina, Shirkov, Grigori, Morozov, Nikolay, and Karamysheva, Oleg

Subjects
ION sources, CYCLOTRONS, PROTON therapy, PENNING ionization, POWER resources
Abstract

The SC200 compact superconducting cyclotron is supposed to contribute on the proton therapy under the collaboration of the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) and the Joint Institute for Nuclear Research (JINR). The energy of cyclotron is 200 MeV with the maximum proton beam current of ~400 nA from the cyclotron outlet. The hot cathode Penning Ionization Gauge (PIG) type proton source will be used in the cyclotron. The purpose of the article is to introduce the inner ion source from the design, simulation and dedicated test. Through the analysis and bench experiment results, the ion source shows a good performance which can provide enough protons to reach the cyclotron beam current. The lifetime of filament can reach more than 50 hours and the source operates at least 1h continuously. A layer-to-layer intensity modulation of the scanned beam is realized with the filament current and the arc voltage that need to vary the extracted beam current between maximum and zero. For the research the request for higher flexibility, in particular for faster beam intensity modulation. In order to explore capabilities of the machine for such research mode, a real-time control system of the arc power supply for ion source has been developed and will also be presented. [ABSTRACT FROM AUTHOR]

Published
2018
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5. The Trajectory Simulation and Optimization of Ion Source Chimney for SC200 Cyclotron.

Author

Shiwen Xu, Yuntao Song, Liusi Sheng, Gen Chen, Yanfang Bi, Yonghua Chen, Kaizhong Ding, Qingxi Yang, Yahong Xie, Yuqian Chen, Chongdong Hu, Karamyshev, Oleg, Karamysheva, Galina, Morozov, Nikolay, Samsonov, Evgeny Vasilievich, and Shirkov, Grigori

Subjects
ION sources, CYCLOTRONS, PARTICLE beam extraction, BEAM emittance (Nuclear physics), NUCLEAR physics
Abstract

SC200 is an isochronous cyclotron which generate 200 MeV, 500 nA proton for particle therapy. As an important component of the cyclotron, the ion source chimney needs to be tested and optimized. The simulation results and optimization of ion source in test bench for SC200 are described in this paper. The simulation results show that the extraction slit with different sizes and shapes has an influence on the emittance of the extraction beam. To verify the simulation results, the performance of the designed ion source chimney with optimized slits was measured, including the beam current intensity and the beam emittance. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

6. Progress and Future Developments of High Current Ion Source for Neutral Beam Injector in the ASIPP.

Author

Chundong Hu, Yahong Xie, Yuanlai Xie, Sheng Liu, Zhimin Liu, Yongjian Xu, Lizhen Liang, Peng Sheng, and Caichao Jiang

Subjects
*ION sources, *NEUTRAL beams, *HYDROGEN ions, *TETRODES, *ACCELERATION (Mechanics)
Abstract

A high current hot cathode bucket ion source, which based on the US long pulse ion source is developed in Institute of Plasma Physics, Chinese Academy of Sciences. The ion source consists of a bucket plasma generator with multi-pole cusp fields and a set of tetrode accelerator with slit apertures. So far, four ion sources are developed and conditioned on the ion source test bed. 4 MW hydrogen beam with beam energy of 80 keV is extracted. In Aug. 2013, EAST NBI 1 with two ion source installed on the EAST, and achieved H-mode plasma with NBI injection for the first time. In order to achieve stable long pulse operation of high current ion source and negative ion source research, the RF ion source with 200 mm diameter and 120 mm depth driver is designed and developed. The first RF plasma generated with 2 kW power of 1 MHz frequency. More of the RF plasma tests and negative source relative research need to do in the future. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

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