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首页> 外文期刊>Review of Scientific Instruments >Electrical shielding box measurement of the negative hydrogen beam from Penning ion gauge ion source
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Electrical shielding box measurement of the negative hydrogen beam from Penning ion gauge ion source

机译：电屏蔽盒测量Penning离子规离子源产生的负氢束

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摘要

The cold-cathode Penning ion gauge (PIG) type ion source has been used for generation of negative hydrogen (H-) ions as the internal ion source of a compact cyclotron. A novel method called electrical shielding box dc beam measurement is described in this paper, and the beam intensity was measured under dc extraction inside an electrical shielding box. The results of the trajectory simulation and dc H- beam extraction measurement were presented. The effect of gas flow rate, magnetic field strength, arc current, and extraction voltage were also discussed. In conclusion, the dc H- beam current of about 4 mA from the PIG ion source with the puller voltage of 40 kV and arc current of 1.31 A was extrapolated from the measurement at low extraction dc voltages.
机译：冷阴极潘宁离子规（PIG）型离子源已用于产生负氢（H -）离子，作为紧凑型回旋加速器的内部离子源。本文介绍了一种称为电屏蔽箱直流光束测量的新方法，并在电屏蔽箱内部的直流提取下测量光束强度。给出了轨迹仿真和直流H -光束提取测量的结果。还讨论了气体流速，磁场强度，电弧电流和提取电压的影响。总之，在低提取直流电压下，从测量中推断出来自PIG离子源的DC H -束电流约为4 mA，其中上拉电压为40 kV，电弧电流为1.31A。

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