Development of 3D microwave imaging reflectometry in LHD (invited)a
Three-dimensional (3D) microwave imaging reflectometry has been developed in the large helical device to visualize fluctuating reflection surface which is caused by the density fluctuations. The plasma is illuminated by the probe wave with four frequencies, which correspond to four radial positions....
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| Veröffentlicht in: | Review of scientific instruments 2012-10, Vol.83 (10), p.10E305-10E305 |
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| container_end_page | 10E305 |
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| container_issue | 10 |
| container_start_page | 10E305 |
| container_title | Review of scientific instruments |
| container_volume | 83 |
| creator | Nagayama, Y. Kuwahara, D. Yoshinaga, T. Hamada, Y. Kogi, Y. Mase, A. Tsuchiya, H. Tsuji-Iio, S. Yamaguchi, S. |
| description | Three-dimensional (3D) microwave imaging reflectometry has been developed in the large helical device to visualize fluctuating reflection surface which is caused by the density fluctuations. The plasma is illuminated by the probe wave with four frequencies, which correspond to four radial positions. The imaging optics makes the image of cut-off surface onto the 2D (7 × 7 channels) horn antenna mixer arrays. Multi-channel receivers have been also developed using micro-strip-line technology to handle many channels at reasonable cost. This system is first applied to observe the edge harmonic oscillation (EHO), which is an MHD mode with many harmonics that appears in the edge plasma. A narrow structure along field lines is observed during EHO. |
| doi_str_mv | 10.1063/1.4729259 |
| format | Article |
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A narrow structure along field lines is observed during EHO.</description><subject>Arrays</subject><subject>Channels</subject><subject>Density</subject><subject>Fluctuation</subject><subject>Imaging</subject><subject>Microwaves</subject><subject>Reflectometry</subject><subject>Three dimensional</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqF0E1LwzAcBvAgipvTg19ActyEzqR5aXKUTZ0w8KLnkKX_jkjfbLrKvr0dm_MgaC65_HiS50HompIpJZLd0SlPYh0LfYKGlCgdJTJmp2hICOORTLgaoIsQ3kl_BKXnaBAzGkstxRDN5tBBXtUFlC2uMszmuPCuqT5tB9gXdu3LNW4gy8G1VQFts8W-xMvFHI992fkW0om9RGeZzQNcHe4Rent8eJ0touXL0_Psfhk5wVgbuZRlhFMtADQVAna_s0oSZTOnpFoBxAkoqRVJpSMuUUmaJr3ghAuWAmUjNN7n1k31sYHQmsIHB3luS6g2wVAea02U6sv_SymnghPNd3Syp33rEPqqpm764s3WUGJ28xpqDvP29uYQu1kVkB7l9549uN2D4HxrW1-VR9NVzU-SqdPsL_z76S9yG45P</recordid><startdate>20121001</startdate><enddate>20121001</enddate><creator>Nagayama, Y.</creator><creator>Kuwahara, D.</creator><creator>Yoshinaga, T.</creator><creator>Hamada, Y.</creator><creator>Kogi, Y.</creator><creator>Mase, A.</creator><creator>Tsuchiya, H.</creator><creator>Tsuji-Iio, S.</creator><creator>Yamaguchi, S.</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20121001</creationdate><title>Development of 3D microwave imaging reflectometry in LHD (invited)a</title><author>Nagayama, Y. ; Kuwahara, D. ; Yoshinaga, T. ; Hamada, Y. ; Kogi, Y. ; Mase, A. ; Tsuchiya, H. ; Tsuji-Iio, S. ; Yamaguchi, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c533t-cd3f04195ee9155e0034a8608afc868bee27e86980d6c0c787dd74a840453de13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Arrays</topic><topic>Channels</topic><topic>Density</topic><topic>Fluctuation</topic><topic>Imaging</topic><topic>Microwaves</topic><topic>Reflectometry</topic><topic>Three dimensional</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nagayama, Y.</creatorcontrib><creatorcontrib>Kuwahara, D.</creatorcontrib><creatorcontrib>Yoshinaga, T.</creatorcontrib><creatorcontrib>Hamada, Y.</creatorcontrib><creatorcontrib>Kogi, Y.</creatorcontrib><creatorcontrib>Mase, A.</creatorcontrib><creatorcontrib>Tsuchiya, H.</creatorcontrib><creatorcontrib>Tsuji-Iio, S.</creatorcontrib><creatorcontrib>Yamaguchi, S.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nagayama, Y.</au><au>Kuwahara, D.</au><au>Yoshinaga, T.</au><au>Hamada, Y.</au><au>Kogi, Y.</au><au>Mase, A.</au><au>Tsuchiya, H.</au><au>Tsuji-Iio, S.</au><au>Yamaguchi, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Development of 3D microwave imaging reflectometry in LHD (invited)a</atitle><jtitle>Review of scientific instruments</jtitle><addtitle>Rev Sci Instrum</addtitle><date>2012-10-01</date><risdate>2012</risdate><volume>83</volume><issue>10</issue><spage>10E305</spage><epage>10E305</epage><pages>10E305-10E305</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>Three-dimensional (3D) microwave imaging reflectometry has been developed in the large helical device to visualize fluctuating reflection surface which is caused by the density fluctuations. 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| fulltext | fulltext |
| identifier | ISSN: 0034-6748 |
| ispartof | Review of scientific instruments, 2012-10, Vol.83 (10), p.10E305-10E305 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_pubmed_primary_23126965 |
| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | Arrays Channels Density Fluctuation Imaging Microwaves Reflectometry Three dimensional |
| title | Development of 3D microwave imaging reflectometry in LHD (invited)a |
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