Design of Off-Midplane Launcher (LH3) Based on Velocity Space Synergy for Alcator C-Mod
A new LH launcher (LH3) is designed for Alcator C-Mod to increase the net LHCD power to 2 MW. With the existing launcher (LH2), LH3 aims to enhance the single pass power absorption to improve LHCD efficiency at high density. For this purpose, launcher design parameters are surveyed to maximize the s...
Gespeichert in:
| Veröffentlicht in: | Plasma and Fusion Research 2013/11/15, Vol.8, pp.2402143-2402143 |
|---|---|
| Hauptverfasser: | , , , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 2402143 |
|---|---|
| container_issue | |
| container_start_page | 2402143 |
| container_title | Plasma and Fusion Research |
| container_volume | 8 |
| creator | SHIRAIWA, Syun’ichi BAEK, Seung Gyou BONOLI, Paul T. FAUST, Ian HILLAIRET, Julien MENEGHINI, Orso PARKER, Ronald R. WALLACE, Gregory M. WILSON, James R. HARVEY, Robert W. SMIRNOV, Alexander P. |
| description | A new LH launcher (LH3) is designed for Alcator C-Mod to increase the net LHCD power to 2 MW. With the existing launcher (LH2), LH3 aims to enhance the single pass power absorption to improve LHCD efficiency at high density. For this purpose, launcher design parameters are surveyed to maximize the synergistic effect between LH2. Ray-tracing is extensively used and the launcher location and the launched N|| = c/v|| are optimized. At the line averaged density of 1.4×1020 m−3, it is predicted that the combination of two launchers can reduce the parasitic edge loss dramatically, and therefore can increase the LH driven current by about 50 - 60 % compared to cases in which two launchers are used separately. Based on the parameter survey, an off-midplane launcher (LH3) is designed to be located 15 cm above mid-plane. LH3 employs 8-way power splitters to improve the antenna-plasma coupling. The antenna-plasma coupling simulation is performed using COMSOL and ALOHA codes, predicting 90 % of RF power coupling when the launcher front density is high enough (≥ ncutoff). |
| doi_str_mv | 10.1585/pfr.8.2402143 |
| format | Article |
| fullrecord | <record><control><sourceid>jstage_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1585_pfr_8_2402143</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>article_pfr_8_0_8_2402143_article_char_en</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3443-e1088d3243b2f1eafebe29e9cdcb90781e89f86403ab79931fbf1e9829cebf4b3</originalsourceid><addsrcrecordid>eNpNkDtPwzAUhS0EEqUwsnuEwcGPNLUnVMqjSKk6lMdo2c51myokkR2G_HuCWhWmc6Xz3TN8CF0zmrCJnNy1PiQy4SnlLBUnaMSkpCSTnJ3-u8_RRYw7SjM1YdkIfT5CLDc1bjxeeU-WZdFWpgacm-_abSHgm3whbvGDiVDgpsYfUDWu7Hq8bo0DvO5rCJse-ybgWeVMN-ScLJviEp15U0W4OuQYvT8_vc0XJF-9vM5nOXEiTQUBRqUsBE-F5Z6B8WCBK1CucFbRqWQglZdZSoWxU6UE83bAlOTKgfWpFWNE9rsuNDEG8LoN5ZcJvWZU_1rRgxUt9cHKwN_v-V3szAaOtAld6So40PTv49i4rQkaavEDeetrhQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Design of Off-Midplane Launcher (LH3) Based on Velocity Space Synergy for Alcator C-Mod</title><source>EZB Electronic Journals Library</source><source>J-STAGE</source><creator>SHIRAIWA, Syun’ichi ; BAEK, Seung Gyou ; BONOLI, Paul T. ; FAUST, Ian ; HILLAIRET, Julien ; MENEGHINI, Orso ; PARKER, Ronald R. ; WALLACE, Gregory M. ; WILSON, James R. ; HARVEY, Robert W. ; SMIRNOV, Alexander P.</creator><creatorcontrib>SHIRAIWA, Syun’ichi ; BAEK, Seung Gyou ; BONOLI, Paul T. ; FAUST, Ian ; HILLAIRET, Julien ; MENEGHINI, Orso ; PARKER, Ronald R. ; WALLACE, Gregory M. ; WILSON, James R. ; HARVEY, Robert W. ; SMIRNOV, Alexander P.</creatorcontrib><description>A new LH launcher (LH3) is designed for Alcator C-Mod to increase the net LHCD power to 2 MW. With the existing launcher (LH2), LH3 aims to enhance the single pass power absorption to improve LHCD efficiency at high density. For this purpose, launcher design parameters are surveyed to maximize the synergistic effect between LH2. Ray-tracing is extensively used and the launcher location and the launched N|| = c/v|| are optimized. At the line averaged density of 1.4×1020 m−3, it is predicted that the combination of two launchers can reduce the parasitic edge loss dramatically, and therefore can increase the LH driven current by about 50 - 60 % compared to cases in which two launchers are used separately. Based on the parameter survey, an off-midplane launcher (LH3) is designed to be located 15 cm above mid-plane. LH3 employs 8-way power splitters to improve the antenna-plasma coupling. The antenna-plasma coupling simulation is performed using COMSOL and ALOHA codes, predicting 90 % of RF power coupling when the launcher front density is high enough (≥ ncutoff).</description><identifier>ISSN: 1880-6821</identifier><identifier>EISSN: 1880-6821</identifier><identifier>DOI: 10.1585/pfr.8.2402143</identifier><language>eng</language><publisher>The Japan Society of Plasma Science and Nuclear Fusion Research</publisher><subject>lower hybrid current drive ; RF modeling ; tokamak</subject><ispartof>Plasma and Fusion Research, 2013/11/15, Vol.8, pp.2402143-2402143</ispartof><rights>2013 by The Japan Society of Plasma Science and Nuclear Fusion Research</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3443-e1088d3243b2f1eafebe29e9cdcb90781e89f86403ab79931fbf1e9829cebf4b3</citedby><cites>FETCH-LOGICAL-c3443-e1088d3243b2f1eafebe29e9cdcb90781e89f86403ab79931fbf1e9829cebf4b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1877,4010,27900,27901,27902</link.rule.ids></links><search><creatorcontrib>SHIRAIWA, Syun’ichi</creatorcontrib><creatorcontrib>BAEK, Seung Gyou</creatorcontrib><creatorcontrib>BONOLI, Paul T.</creatorcontrib><creatorcontrib>FAUST, Ian</creatorcontrib><creatorcontrib>HILLAIRET, Julien</creatorcontrib><creatorcontrib>MENEGHINI, Orso</creatorcontrib><creatorcontrib>PARKER, Ronald R.</creatorcontrib><creatorcontrib>WALLACE, Gregory M.</creatorcontrib><creatorcontrib>WILSON, James R.</creatorcontrib><creatorcontrib>HARVEY, Robert W.</creatorcontrib><creatorcontrib>SMIRNOV, Alexander P.</creatorcontrib><title>Design of Off-Midplane Launcher (LH3) Based on Velocity Space Synergy for Alcator C-Mod</title><title>Plasma and Fusion Research</title><addtitle>Plasma and Fusion Research</addtitle><description>A new LH launcher (LH3) is designed for Alcator C-Mod to increase the net LHCD power to 2 MW. With the existing launcher (LH2), LH3 aims to enhance the single pass power absorption to improve LHCD efficiency at high density. For this purpose, launcher design parameters are surveyed to maximize the synergistic effect between LH2. Ray-tracing is extensively used and the launcher location and the launched N|| = c/v|| are optimized. At the line averaged density of 1.4×1020 m−3, it is predicted that the combination of two launchers can reduce the parasitic edge loss dramatically, and therefore can increase the LH driven current by about 50 - 60 % compared to cases in which two launchers are used separately. Based on the parameter survey, an off-midplane launcher (LH3) is designed to be located 15 cm above mid-plane. LH3 employs 8-way power splitters to improve the antenna-plasma coupling. The antenna-plasma coupling simulation is performed using COMSOL and ALOHA codes, predicting 90 % of RF power coupling when the launcher front density is high enough (≥ ncutoff).</description><subject>lower hybrid current drive</subject><subject>RF modeling</subject><subject>tokamak</subject><issn>1880-6821</issn><issn>1880-6821</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNpNkDtPwzAUhS0EEqUwsnuEwcGPNLUnVMqjSKk6lMdo2c51myokkR2G_HuCWhWmc6Xz3TN8CF0zmrCJnNy1PiQy4SnlLBUnaMSkpCSTnJ3-u8_RRYw7SjM1YdkIfT5CLDc1bjxeeU-WZdFWpgacm-_abSHgm3whbvGDiVDgpsYfUDWu7Hq8bo0DvO5rCJse-ybgWeVMN-ScLJviEp15U0W4OuQYvT8_vc0XJF-9vM5nOXEiTQUBRqUsBE-F5Z6B8WCBK1CucFbRqWQglZdZSoWxU6UE83bAlOTKgfWpFWNE9rsuNDEG8LoN5ZcJvWZU_1rRgxUt9cHKwN_v-V3szAaOtAld6So40PTv49i4rQkaavEDeetrhQ</recordid><startdate>2013</startdate><enddate>2013</enddate><creator>SHIRAIWA, Syun’ichi</creator><creator>BAEK, Seung Gyou</creator><creator>BONOLI, Paul T.</creator><creator>FAUST, Ian</creator><creator>HILLAIRET, Julien</creator><creator>MENEGHINI, Orso</creator><creator>PARKER, Ronald R.</creator><creator>WALLACE, Gregory M.</creator><creator>WILSON, James R.</creator><creator>HARVEY, Robert W.</creator><creator>SMIRNOV, Alexander P.</creator><general>The Japan Society of Plasma Science and Nuclear Fusion Research</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2013</creationdate><title>Design of Off-Midplane Launcher (LH3) Based on Velocity Space Synergy for Alcator C-Mod</title><author>SHIRAIWA, Syun’ichi ; BAEK, Seung Gyou ; BONOLI, Paul T. ; FAUST, Ian ; HILLAIRET, Julien ; MENEGHINI, Orso ; PARKER, Ronald R. ; WALLACE, Gregory M. ; WILSON, James R. ; HARVEY, Robert W. ; SMIRNOV, Alexander P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3443-e1088d3243b2f1eafebe29e9cdcb90781e89f86403ab79931fbf1e9829cebf4b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>lower hybrid current drive</topic><topic>RF modeling</topic><topic>tokamak</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>SHIRAIWA, Syun’ichi</creatorcontrib><creatorcontrib>BAEK, Seung Gyou</creatorcontrib><creatorcontrib>BONOLI, Paul T.</creatorcontrib><creatorcontrib>FAUST, Ian</creatorcontrib><creatorcontrib>HILLAIRET, Julien</creatorcontrib><creatorcontrib>MENEGHINI, Orso</creatorcontrib><creatorcontrib>PARKER, Ronald R.</creatorcontrib><creatorcontrib>WALLACE, Gregory M.</creatorcontrib><creatorcontrib>WILSON, James R.</creatorcontrib><creatorcontrib>HARVEY, Robert W.</creatorcontrib><creatorcontrib>SMIRNOV, Alexander P.</creatorcontrib><collection>CrossRef</collection><jtitle>Plasma and Fusion Research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SHIRAIWA, Syun’ichi</au><au>BAEK, Seung Gyou</au><au>BONOLI, Paul T.</au><au>FAUST, Ian</au><au>HILLAIRET, Julien</au><au>MENEGHINI, Orso</au><au>PARKER, Ronald R.</au><au>WALLACE, Gregory M.</au><au>WILSON, James R.</au><au>HARVEY, Robert W.</au><au>SMIRNOV, Alexander P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Design of Off-Midplane Launcher (LH3) Based on Velocity Space Synergy for Alcator C-Mod</atitle><jtitle>Plasma and Fusion Research</jtitle><addtitle>Plasma and Fusion Research</addtitle><date>2013</date><risdate>2013</risdate><volume>8</volume><spage>2402143</spage><epage>2402143</epage><pages>2402143-2402143</pages><issn>1880-6821</issn><eissn>1880-6821</eissn><abstract>A new LH launcher (LH3) is designed for Alcator C-Mod to increase the net LHCD power to 2 MW. With the existing launcher (LH2), LH3 aims to enhance the single pass power absorption to improve LHCD efficiency at high density. For this purpose, launcher design parameters are surveyed to maximize the synergistic effect between LH2. Ray-tracing is extensively used and the launcher location and the launched N|| = c/v|| are optimized. At the line averaged density of 1.4×1020 m−3, it is predicted that the combination of two launchers can reduce the parasitic edge loss dramatically, and therefore can increase the LH driven current by about 50 - 60 % compared to cases in which two launchers are used separately. Based on the parameter survey, an off-midplane launcher (LH3) is designed to be located 15 cm above mid-plane. LH3 employs 8-way power splitters to improve the antenna-plasma coupling. The antenna-plasma coupling simulation is performed using COMSOL and ALOHA codes, predicting 90 % of RF power coupling when the launcher front density is high enough (≥ ncutoff).</abstract><pub>The Japan Society of Plasma Science and Nuclear Fusion Research</pub><doi>10.1585/pfr.8.2402143</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1880-6821 |
| ispartof | Plasma and Fusion Research, 2013/11/15, Vol.8, pp.2402143-2402143 |
| issn | 1880-6821 1880-6821 |
| language | eng |
| recordid | cdi_crossref_primary_10_1585_pfr_8_2402143 |
| source | EZB Electronic Journals Library; J-STAGE |
| subjects | lower hybrid current drive RF modeling tokamak |
| title | Design of Off-Midplane Launcher (LH3) Based on Velocity Space Synergy for Alcator C-Mod |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-01T12%3A49%3A58IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstage_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Design%20of%20Off-Midplane%20Launcher%20(LH3)%20Based%20on%20Velocity%20Space%20Synergy%20for%20Alcator%20C-Mod&rft.jtitle=Plasma%20and%20Fusion%20Research&rft.au=SHIRAIWA,%20Syun%E2%80%99ichi&rft.date=2013&rft.volume=8&rft.spage=2402143&rft.epage=2402143&rft.pages=2402143-2402143&rft.issn=1880-6821&rft.eissn=1880-6821&rft_id=info:doi/10.1585/pfr.8.2402143&rft_dat=%3Cjstage_cross%3Earticle_pfr_8_0_8_2402143_article_char_en%3C/jstage_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |