Arc Discharge Performance Analysis for a High Power Bucket Ion Source

ZOU Gui-Qing; ZHONG Guang-Wu; LEI Guang-Jiu; JIANG Shao-Feng; LU Da-Lun; CAO Jian-Yong; LIU He

Chinese Physics C> 2008, Vol. 32> Issue(S1) : 283-285

Arc Discharge Performance Analysis for a High Power Bucket Ion Source

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Abstract：
To match the large power long pulse neutral beam injectors for HL-2A Tokamak, a circular magnetic multipole line-cusp ion source (namely a bucket ion source) has been designed. The arc chamber of this ion source is a water-cooled, stainless-steel cylinder 26cm in diameter, 4mm thick, and 24cm long. So far, many arc discharge experiments on this ion source have demonstrated that the plasma density has been 0.24A/cm², for 3 seconds duration, within 5%—7% plasma uniformity, and 3 seconds maximum pulse. Arc discharge characteristics, such as the gas pressure dependence and filaments arrangements dependence have been studied experimentally and theoretically in this paper.
References

[1] Dan M. Goebel. Phys. Fluids, 1982, 25(6): 1093
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ZOU Gui-Qing, ZHONG Guang-Wu, LEI Guang-Jiu, JIANG Shao-Feng, LU Da-Lun, CAO Jian-Yong and LIU He. Arc Discharge Performance Analysis for a High Power Bucket Ion Source[J]. Chinese Physics C, 2008, 32(S1): 283-285.

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Received: 2008-01-11
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Arc Discharge Performance Analysis for a High Power Bucket Ion Source

Corresponding author: ZOU Gui-Qing,

Received Date: 2008-01-11
Accepted Date: 1900-01-01
Available Online: 2008-01-04

Abstract: To match the large power long pulse neutral beam injectors for HL-2A Tokamak, a circular magnetic multipole line-cusp ion source (namely a bucket ion source) has been designed. The arc chamber of this ion source is a water-cooled, stainless-steel cylinder 26cm in diameter, 4mm thick, and 24cm long. So far, many arc discharge experiments on this ion source have demonstrated that the plasma density has been 0.24A/cm², for 3 seconds duration, within 5%—7% plasma uniformity, and 3 seconds maximum pulse. Arc discharge characteristics, such as the gas pressure dependence and filaments arrangements dependence have been studied experimentally and theoretically in this paper.