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Development of High Power Transmission System for ECRH in LHD

T. Notake et al. (19P73)

Fusion Science and Technology / Volume 51 / Number 2T / Pages 409-411

February 2007

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In Large Helical Device, a power transmission line consists of corrugated waveguides with inner diameter of 88.9 mm for electron cyclotron resonance heating is evacuated in order to transmit higher power by reducing a possibility of electrical breakdown in the line. Some characteristics of such transmission lines, vacuum pumping system and comparison of pressure distribution simulated and gauged along the transmission line are described. An effect of vacuum pumping for higher power transmission is demonstrated.

 
 
 
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