DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, S | - |
dc.contributor.author | Jeong, J | - |
dc.contributor.author | Namkung, W | - |
dc.contributor.author | Cho, NH | - |
dc.contributor.author | Bae, YS | - |
dc.contributor.author | Han, WS | - |
dc.contributor.author | Yang, HL | - |
dc.contributor.author | 남궁원 | - |
dc.date.accessioned | 2016-04-01T03:01:29Z | - |
dc.date.available | 2016-04-01T03:01:29Z | - |
dc.date.issued | 2009-01 | - |
dc.identifier.citation | FUSION SCIENCE AND TECHNOLOGY | - |
dc.identifier.citation | v.55 | - |
dc.identifier.citation | no.1 | - |
dc.identifier.citation | pp.56-63 | - |
dc.identifier.issn | 1536-1055 | - |
dc.identifier.other | 2009-OAK-0000020877 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/26149 | - |
dc.description.abstract | An 84-GHz electron cyclotron heating (ECH) system has been installed to assist plasma start-up by preionization in the Korea Superconducting Tokamak Advanced Research (KSTAR) device. The KSTAR 84-GHz ECH system consists of a 500-kW gyrotron, a transmission line, and an antenna system. The wave power is transmitted from the gyrotron to the antenna through an evacuated corrugated circular waveguide of 31.75-mm inner diameter and six miter bends, which include a pair of polarizer miter bends for polarization control. The maximum permitted vacuum pressure without radio-frequency (rf) breakdown in the 31.75-mm waveguide at 84 GHz, 500 kW was calculated to be similar to 0.1 torr. The pumping time to reach the vacuum pressure of 1 x 10(-3) torr in the KSTAR ECH system was similar to 2 h by two turbo-molecular pumps. The transmission efficiency of similar to 93% from the output of the mirror optical unit to the torus window was measured using a low-power rf source. The wave polarization by a pair of polarizer miter bends with grooved mirrors was tested using the low-power system, and it showed good agreement with numerical calculations. In this paper, we present the design and commissioning results of the KSTAR 84-GHz transmission line. | - |
dc.description.statementofresponsibility | X | - |
dc.publisher | AMER NUCLEAR SOC | - |
dc.subject | KSTAR | - |
dc.subject | ECH | - |
dc.subject | transmission line | - |
dc.subject | HEATING ASSISTED STARTUP | - |
dc.subject | MICROWAVE BREAKDOWN | - |
dc.subject | WAVE-GUIDES | - |
dc.subject | DIII-D | - |
dc.subject | CYCLOTRON | - |
dc.subject | PREIONIZATION | - |
dc.subject | TECHNOLOGY | - |
dc.subject | TOKAMAK | - |
dc.subject | ITER | - |
dc.title | COMMISSIONING OF KSTAR 84-GHz ECH TRANSMISSION SYSTEM | - |
dc.type | Conference | - |
dc.contributor.college | 포항가속기연구소 | - |
dc.author.google | Park, S | - |
dc.author.google | Jeong, J | - |
dc.author.google | Namkung, W | - |
dc.author.google | Cho, NH | - |
dc.author.google | Bae, YS | - |
dc.author.google | Han, WS | - |
dc.author.google | Yang, HL | - |
dc.relation.volume | 55 | - |
dc.relation.issue | 1 | - |
dc.relation.startpage | 56 | - |
dc.relation.lastpage | 63 | - |
dc.contributor.id | 10184506 | - |
dc.publisher.location | US | - |
dc.relation.journal | FUSION SCIENCE AND TECHNOLOGY | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Conference Papers | - |
dc.type.docType | Proceedings Paper | - |
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