Optimizing the front end test stand high performance H- ion source at RAL.
Optimizing the front end test stand high performance H- ion source at RAL.
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DOI：
10.1063/1.3655526
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发表时间：
2012-02
期刊：
影响因子：
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通讯作者：
D. Faircloth;S. Lawrie;C. Gabor;A. Letchford;M. Whitehead;T. Wood;M. Perkins
中科院分区：
文献类型：
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作者：
D. Faircloth;S. Lawrie;C. Gabor;A. Letchford;M. Whitehead;T. Wood;M. Perkins
前端试验台项目的目的是证明可以生产高质量的短切低能 H(-) 光束。该束线目前由离子源、3 个螺线管低能束传输和一套诊断装置组成。给出了射频四极杆的简要状态报告。本文详细介绍了优化离子源性能的工作。开发出一种可靠性更高的新型高功率脉冲放电电源，可在 50 Hz 下长期稳定运行，放电脉冲为 60 A、2.2 ms，放电脉冲高达 100 A、1.2 ms。现有的提取电源已修改为最高 22 kV 的运行电压。总结了光谱测量的结果及其在光源优化中的应用。报告了 60 mA 的源发射率和束电流。
The aim of the front end test stand project is to demonstrate that chopped low energy H(-) beams of high quality can be produced. The beam line currently consists of the ion source, a 3 solenoid low energy beam transport and a suite of diagnostics. A brief status report of the radio frequency quadrupole is given. This paper details the work to optimize the ion source performance. A new high power pulsed discharge power supply with greater reliability has been developed to allow long term, stable operation at 50 Hz with a 60 A, 2.2 ms discharge pulse and up to 100 A at 1.2 ms. The existing extraction power supply has been modified to operate up to 22 kV. Results from optical spectroscopy measurements and their application to source optimization are summarized. Source emittances and beam currents of 60 mA are reported.