SAP2017 - List of Authors (Xie, Y.H.)

Paper	Title	Page
MODH3	Analysis of Beam Optics for a High Power Ion Source	22
	Y.H. Xie, C.D. Hu ASIPP, Hefei, People's Republic of China
	Funding: Supported by the National Natural Science Foundation of China (NNSFC) (Contract No. 11405207, 11507215 & 11675215) The high power ion source is the key parts of neutral beam injector. Generally speaking, the beam power should matching the extraction voltage for a given accelerator. In order to get higher beam power with lower beam extraction voltage, the beam optics of accelerator was analyzed based on the structure of EAST-NBI tetrode accelerator. The beam optics of a tetrode accelerator and a new designed three-electrode accelerator was analyzed with beam energy of 50 keV. The results shown that, the two types of accelerator can get high beam perveance (4.6μp) with lower beam divergence angle compare to the EAST-NBI accelerator (2.8μp ). And the tetrode accelerator can gets lower beam divergence angle compare to the three-electrode accelerator, but the electric field between two electrode is much higher than three-electrode accelerator. The results can help for the ion source design of high power ion source.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-MODH3
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TUPH26	Numerical Assessment of Beam Diagnostic Calorimeter for East Neutral Beam Injector	162
	Y. Xu, C.D. Hu, L.Z. Liang, Y.H. Xie, Y.L. Xie, Yu, L. Yu ASIPP, Hefei, People's Republic of China
	Funding: This work has been supported by The National Natural Science Foundation of China (NNSFC) (Contract No. 11575240) and the Foundation of ASIPP (Contract No. DSJJ-15-GC03). Neutral beam injection is one of the most effective means of plasma heating and has been also verified to be applicable for current driving. In order to support the physical research of EAST, two neutral beam injectors (NBI, 80 keV, 4 MW) have been developed and constructed in Institute of Plasma Physics, CAS. In order to evaluate beam intensity distribution and divergence, a moveable sophisticated copper short-pulse beam diagnostic calorimeter is designed and installed on the NBI test stand. In this article, the structure of calorimeter, the operating parameters are introduced. The new diagnostic calorimeter plate bombarded by the beam adopts blocking design and there is no heat transfer between adjacent block. Thermocouples are installed into the block, so the temperature can be measured precisely. Based on the data obtained by thermocouples, the beam pattern can be plotted. In order to ensure the diagnostic calorimeter work safely, the operating parameters are explored using FEM. As the new beam diagnostic calorimeter solve the problem of mutual interference due to the heat transfer of each block, it can give more precise beam property comparing with the present calorimeter.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-TUPH26
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Paper

Title

Page

Analysis of Beam Optics for a High Power Ion Source

22

Y.H. Xie, C.D. Hu
ASIPP, Hefei, People's Republic of China

Funding: Supported by the National Natural Science Foundation of China (NNSFC) (Contract No. 11405207, 11507215 & 11675215)
The high power ion source is the key parts of neutral beam injector. Generally speaking, the beam power should matching the extraction voltage for a given accelerator. In order to get higher beam power with lower beam extraction voltage, the beam optics of accelerator was analyzed based on the structure of EAST-NBI tetrode accelerator. The beam optics of a tetrode accelerator and a new designed three-electrode accelerator was analyzed with beam energy of 50 keV. The results shown that, the two types of accelerator can get high beam perveance (4.6μp) with lower beam divergence angle compare to the EAST-NBI accelerator (2.8μp ). And the tetrode accelerator can gets lower beam divergence angle compare to the three-electrode accelerator, but the electric field between two electrode is much higher than three-electrode accelerator. The results can help for the ion source design of high power ion source.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-MODH3

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPH26

Numerical Assessment of Beam Diagnostic Calorimeter for East Neutral Beam Injector

162

Y. Xu, C.D. Hu, L.Z. Liang, Y.H. Xie, Y.L. Xie, Yu, L. Yu
ASIPP, Hefei, People's Republic of China

Funding: This work has been supported by The National Natural Science Foundation of China (NNSFC) (Contract No. 11575240) and the Foundation of ASIPP (Contract No. DSJJ-15-GC03).
Neutral beam injection is one of the most effective means of plasma heating and has been also verified to be applicable for current driving. In order to support the physical research of EAST, two neutral beam injectors (NBI, 80 keV, 4 MW) have been developed and constructed in Institute of Plasma Physics, CAS. In order to evaluate beam intensity distribution and divergence, a moveable sophisticated copper short-pulse beam diagnostic calorimeter is designed and installed on the NBI test stand. In this article, the structure of calorimeter, the operating parameters are introduced. The new diagnostic calorimeter plate bombarded by the beam adopts blocking design and there is no heat transfer between adjacent block. Thermocouples are installed into the block, so the temperature can be measured precisely. Based on the data obtained by thermocouples, the beam pattern can be plotted. In order to ensure the diagnostic calorimeter work safely, the operating parameters are explored using FEM. As the new beam diagnostic calorimeter solve the problem of mutual interference due to the heat transfer of each block, it can give more precise beam property comparing with the present calorimeter.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-TUPH26

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)