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.date.accessioned | 2017-07-18T16:57:58Z | - |
dc.date.available | 2017-07-18T16:57:58Z | - |
dc.date.created | 2009-06-17 | - |
dc.date.issued | 2009-01 | - |
dc.identifier.issn | 1536-1055 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/31084 | - |
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.language | English | - |
dc.publisher | AMER NUCLEAR SOC | - |
dc.relation.isPartOf | FUSION SCIENCE AND TECHNOLOGY | - |
dc.title | COMMISSIONING OF KSTAR 84-GHZ ECH TRANSMISSION SYSTEM | - |
dc.type | Article | - |
dc.identifier.doi | 10.13182/FST09-A4053 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | FUSION SCIENCE AND TECHNOLOGY, v.55, no.1, pp.56 - 63 | - |
dc.identifier.wosid | 000262872300006 | - |
dc.date.tcdate | 2019-03-01 | - |
dc.citation.endPage | 63 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 56 | - |
dc.citation.title | FUSION SCIENCE AND TECHNOLOGY | - |
dc.citation.volume | 55 | - |
dc.contributor.affiliatedAuthor | Namkung, W | - |
dc.contributor.affiliatedAuthor | Cho, NH | - |
dc.identifier.scopusid | 2-s2.0-59849123599 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 3 | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.subject.keywordPlus | HEATING ASSISTED STARTUP | - |
dc.subject.keywordPlus | MICROWAVE BREAKDOWN | - |
dc.subject.keywordPlus | WAVE-GUIDES | - |
dc.subject.keywordPlus | DIII-D | - |
dc.subject.keywordPlus | CYCLOTRON | - |
dc.subject.keywordPlus | PREIONIZATION | - |
dc.subject.keywordPlus | TECHNOLOGY | - |
dc.subject.keywordPlus | TOKAMAK | - |
dc.subject.keywordPlus | ITER | - |
dc.subject.keywordAuthor | KSTAR | - |
dc.subject.keywordAuthor | ECH | - |
dc.subject.keywordAuthor | transmission line | - |
dc.relation.journalWebOfScienceCategory | Nuclear Science & Technology | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Nuclear Science & Technology | - |
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