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Development of a water load for a Ka-band 10 kW continuous-wave gyrotron in an ECR ion source system

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Abstract

A gyrotron is used as a microwave power source in an electron-cyclotron-resonance (ECR) ion source system. In order to test the gyrotron, which operates at a frequency of 28 GHz in the continuous-wave (CW) mode, the Korea Basic Science Institute (KBSI) developed a water load that absorbed up to 10 kW of power. The water load consists of an aluminum jacket, a quartz window, and a waveguide. A distilled water flow of 13 L/min, sealed with the quartz window, is used as the absorbent. At 28 GHz, the S 11 parameter and the voltage standing-wave ratio (VSWR) of the water load design were calculated to be less than −30 dB and 1.05, respectively. In practical experiments, the increase in the water’s temperature was approximately 10 °C at the highest power.

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Authors and Affiliations

  1. Busan Center, Korea Basic Science Institute, Busan, 609-735, Korea

    Jung-Woo Ok, Seyong Choi, Byoung-Seob Lee, Jang-Hee Yoon, Jin Yong Park, Chang Seouk Shin & Mi-Sook Won

  2. Rare Isotope Science Project, Institute for Basic Science, Daejeon, 305-390, Korea

    In-Seok Hong

Authors
  1. Jung-Woo Ok
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  2. Seyong Choi
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  3. Byoung-Seob Lee
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  4. Jang-Hee Yoon
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  5. Jin Yong Park
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  6. Chang Seouk Shin
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  7. Mi-Sook Won
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  8. In-Seok Hong
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Corresponding author

Correspondence to Mi-Sook Won.

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Ok, JW., Choi, S., Lee, BS. et al. Development of a water load for a Ka-band 10 kW continuous-wave gyrotron in an ECR ion source system. Journal of the Korean Physical Society 66, 349–352 (2015). https://doi.org/10.3938/jkps.66.349

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  • DOI: https://doi.org/10.3938/jkps.66.349

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