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Development of the 3.7 GHz LHCD system on HL-2A

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Abstract

A 2 MW-3.7 GHz lower hybrid current drive (LHCD) system is under development for physics experiments on the HL-2A device. The RF Power is generated by four TH2103A klystron amplifiers and propagates in the TE10 mode through WR284 waveguides. The transmission lines with a length of 20 m to 30 m are pressurized with 2 bars of nitrogen to decrease the possibility of arcing. The launcher, based on the passive-active multi-junction (PAM) concept, has been developed and is currently being realized. It was designed for a power spectrum peaked at N|| = 2.75 with good coupling properties over a wide range of plasma parameters. The four klystrons are fed by a high-voltage power supply (HVPS) based on the pulse step modulation (PSM) concept with a fast switch-off time of less than ten μs. This system is expected to be in operation within 1 years and will explore many international thermonuclear experimental reactor (ITER) related LH experiments in the following years.

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Authors and Affiliations

  1. Southwestern Institute of Physics, P. O. Box 432, Chengdu, 610041, China

    B. Lu, M. Huang, H. Zeng, X. Y. Bai, X. H. Mao, Z. H. Lu, J. Liang, Z. H. Kang, M. W. Wang, K. Feng, H. Wang, C. Wang, J. Q. Wang, S. Wei, T. Yao, Y. N. Bu, J. Feng, G. Y. Cheng, S. D. Song, D. H. Xia & J. Rao

Authors
  1. B. Lu
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  2. M. Huang
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  3. H. Zeng
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  4. X. Y. Bai
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  5. X. H. Mao
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  6. Z. H. Lu
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  7. J. Liang
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  8. Z. H. Kang
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  9. M. W. Wang
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  10. K. Feng
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  11. H. Wang
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  12. C. Wang
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  13. J. Q. Wang
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  14. S. Wei
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  15. T. Yao
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  16. Y. N. Bu
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  17. J. Feng
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  18. G. Y. Cheng
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  19. S. D. Song
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  20. D. H. Xia
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  21. J. Rao
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Corresponding author

Correspondence to B. Lu.

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Lu, B., Huang, M., Zeng, H. et al. Development of the 3.7 GHz LHCD system on HL-2A. Journal of the Korean Physical Society 65, 1243–1246 (2014). https://doi.org/10.3938/jkps.65.1243

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  • DOI: https://doi.org/10.3938/jkps.65.1243

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