Mechanical design of the second ICRF antenna for EAST

Yang, Xubo; Song, Yuntao; Wu, Songtao; Zhao, Yanping; Zhang, J.X.; Wang, Zhiwei

doi:10.1016/j.fusengdes.2012.02.123

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…The I-port antenna includes four current straps arranged in a toroidal array (as shown in figure 2), each toroidal strap is powered by a single transmitter and can be phased relative to the other straps. More detail of the structure is given in [16] and the specific simulation analysis about the I-port antenna is given in [17].…”

Section: The Effect Of Antenna Phasing On Antenna Resistancementioning

confidence: 99%

Recent ICRF coupling experiments on EAST

Yang¹,

Zhang²,

Zhao³

et al. 2018

Plasma Sci. Technol.

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Recent ion cyclotron resonance frequency (ICRF) coupling experiments for optimizing ICRF heating in high power discharge were performed on EAST. The coupling experiments were focus on antenna phasing and gas puffing, which were performed separately on two ports of the ion cyclotron resonance heating (ICRH) system of EAST. The antenna phasing was performed on the I-port antenna, which consists of four toroidally spaced radiating straps operating in multiple phasing cases; the coupling performance was better under low wave number  | | k (ranging from 4.5 to 6.5). By fuelling the plasma from gas injectors, placed as uniformly spaced array from top to bottom at each side limiter of the B-port antenna, which works in dipole phasing, the coupling resistance of the B-port antenna increased obviously. Furthermore, the coupling resistance of the I-port antenna was insensitive to a smaller rate of gas puffing but when the gas injection rate was more than a certain value (>10 21 s −1 ), a sharp increase in the coupling resistance of the I-port antenna occurred, which was mainly caused by the toroidal asymmetric boundary density arising from gas puffing. A more specific analysis is given in the paper.

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Section: The Effect Of Antenna Phasing On Antenna Resistancementioning

confidence: 99%