Simultaneous projection and detection system of four different frequencies for microwave imaging reflectometry in Large Helical Device
A simultaneous projection/detection system of four different frequencies for microwave imaging reflectometry (MIR) was developed for three-dimensional observation of electron density fluctuations in the Large Helical Device (LHD). The microwave with four frequency components at 60.410, 61.808, 63.00...
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| Veröffentlicht in: | Review of scientific instruments 2010-10, Vol.81 (10), p.10D915-10D915-4 |
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| container_end_page | 10D915-4 |
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| container_issue | 10 |
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| container_title | Review of scientific instruments |
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| creator | Yoshinaga, T. Nagayama, Y. Kuwahara, D. Tsuchiya, H. Yamaguchi, S. Kogi, Y. Tsuji-Iio, S. Mase, A. |
| description | A simultaneous projection/detection system of four different frequencies for microwave imaging reflectometry (MIR) was developed for three-dimensional observation of electron density fluctuations in the Large Helical Device (LHD). The microwave with four frequency components at 60.410, 61.808, 63.008, and 64.610 GHz is projected in a continuous-wave mode to illuminate the target LHD plasma. A two-dimensional horn-antenna mixer array (2D HMA) receives the reflected wave from the plasma as well as the wave from the local oscillator operating at 55.800 GHz. The first intermediate frequency (IF) signals at 4.610, 6.008, 7.208, and 8.810 GHz were confirmed to be obtained by downconversion of these microwaves using the 2D HMA. Each of these first IF components is filtered from each other and downconverted again for the superheterodyne detection. It was confirmed that both the amplitudes and the phases of the detected signals reflect the fluctuations in LHD plasmas. |
| doi_str_mv | 10.1063/1.3491197 |
| format | Article |
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The microwave with four frequency components at 60.410, 61.808, 63.008, and 64.610 GHz is projected in a continuous-wave mode to illuminate the target LHD plasma. A two-dimensional horn-antenna mixer array (2D HMA) receives the reflected wave from the plasma as well as the wave from the local oscillator operating at 55.800 GHz. The first intermediate frequency (IF) signals at 4.610, 6.008, 7.208, and 8.810 GHz were confirmed to be obtained by downconversion of these microwaves using the 2D HMA. Each of these first IF components is filtered from each other and downconverted again for the superheterodyne detection. It was confirmed that both the amplitudes and the phases of the detected signals reflect the fluctuations in LHD plasmas.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/1.3491197</identifier><identifier>PMID: 21033947</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; AMPLITUDES ; ANTENNAS ; DETECTION ; ELECTRON DENSITY ; FLUCTUATIONS ; GHZ RANGE ; INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ; LHD DEVICE ; MICROWAVE RADIATION ; OSCILLATORS ; PLASMA ; PLASMA DIAGNOSTICS ; SIGNALS ; THREE-DIMENSIONAL CALCULATIONS ; TWO-DIMENSIONAL CALCULATIONS</subject><ispartof>Review of scientific instruments, 2010-10, Vol.81 (10), p.10D915-10D915-4</ispartof><rights>2010 American Institute of Physics</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c512t-5a7d9653755f491636775768e7f6fcc6aa49100c2c1979bd655856213ff21daf3</citedby><cites>FETCH-LOGICAL-c512t-5a7d9653755f491636775768e7f6fcc6aa49100c2c1979bd655856213ff21daf3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/1.3491197$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>230,314,776,780,790,881,1553,4497,27903,27904,76130,76136</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21033947$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/22055821$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Yoshinaga, T.</creatorcontrib><creatorcontrib>Nagayama, Y.</creatorcontrib><creatorcontrib>Kuwahara, D.</creatorcontrib><creatorcontrib>Tsuchiya, H.</creatorcontrib><creatorcontrib>Yamaguchi, S.</creatorcontrib><creatorcontrib>Kogi, Y.</creatorcontrib><creatorcontrib>Tsuji-Iio, S.</creatorcontrib><creatorcontrib>Mase, A.</creatorcontrib><title>Simultaneous projection and detection system of four different frequencies for microwave imaging reflectometry in Large Helical Device</title><title>Review of scientific instruments</title><addtitle>Rev Sci Instrum</addtitle><description>A simultaneous projection/detection system of four different frequencies for microwave imaging reflectometry (MIR) was developed for three-dimensional observation of electron density fluctuations in the Large Helical Device (LHD). The microwave with four frequency components at 60.410, 61.808, 63.008, and 64.610 GHz is projected in a continuous-wave mode to illuminate the target LHD plasma. A two-dimensional horn-antenna mixer array (2D HMA) receives the reflected wave from the plasma as well as the wave from the local oscillator operating at 55.800 GHz. The first intermediate frequency (IF) signals at 4.610, 6.008, 7.208, and 8.810 GHz were confirmed to be obtained by downconversion of these microwaves using the 2D HMA. Each of these first IF components is filtered from each other and downconverted again for the superheterodyne detection. It was confirmed that both the amplitudes and the phases of the detected signals reflect the fluctuations in LHD plasmas.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>AMPLITUDES</subject><subject>ANTENNAS</subject><subject>DETECTION</subject><subject>ELECTRON DENSITY</subject><subject>FLUCTUATIONS</subject><subject>GHZ RANGE</subject><subject>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</subject><subject>LHD DEVICE</subject><subject>MICROWAVE RADIATION</subject><subject>OSCILLATORS</subject><subject>PLASMA</subject><subject>PLASMA DIAGNOSTICS</subject><subject>SIGNALS</subject><subject>THREE-DIMENSIONAL CALCULATIONS</subject><subject>TWO-DIMENSIONAL CALCULATIONS</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp1kc1u1DAUhS0EotOBBS-ALLFAXaS147E92SBV5aeVRmJRWFuucz24SuxiO0XzAjw3d5SA2NQby9efju45h5A3nJ1zpsQFPxebjvNOPyMrzrZdo1UrnpMVY2LTKL3ZnpDTUu4ZHsn5S3LSciZEt9Er8vs2jNNQbYQ0FfqQ0z24GlKkNva0h7q8yqFUGGny1Kcp0z54DxlipT7DzwmiC1DwK9MxuJx-2UegYbT7EPc0gx9QJY1Q84GGSHc274FewxCcHehHeAwOXpEX3g4FXi_3mnz__Onb1XWz-_rl5upy1zjJ29pIq_tOSaGl9OhYCaW11GoL2ivvnLIWp4y51mEY3V2vpNxK1XLhfct768WavJt1U6nBFBfQ4A-XYsQNTdsy5JFek_czhXmgu1LNGIqDYZhjMhgvE1xKgeTZTKLrUtCqechoPB8MZ-bYjeFm6QbZt4vqdDdC_4_8WwYCH2bguJc95v602v-1maU28QequqAX</recordid><startdate>20101001</startdate><enddate>20101001</enddate><creator>Yoshinaga, T.</creator><creator>Nagayama, Y.</creator><creator>Kuwahara, D.</creator><creator>Tsuchiya, H.</creator><creator>Yamaguchi, S.</creator><creator>Kogi, Y.</creator><creator>Tsuji-Iio, S.</creator><creator>Mase, A.</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>20101001</creationdate><title>Simultaneous projection and detection system of four different frequencies for microwave imaging reflectometry in Large Helical Device</title><author>Yoshinaga, T. ; Nagayama, Y. ; Kuwahara, D. ; Tsuchiya, H. ; Yamaguchi, S. ; Kogi, Y. ; Tsuji-Iio, S. ; Mase, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c512t-5a7d9653755f491636775768e7f6fcc6aa49100c2c1979bd655856213ff21daf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>AMPLITUDES</topic><topic>ANTENNAS</topic><topic>DETECTION</topic><topic>ELECTRON DENSITY</topic><topic>FLUCTUATIONS</topic><topic>GHZ RANGE</topic><topic>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</topic><topic>LHD DEVICE</topic><topic>MICROWAVE RADIATION</topic><topic>OSCILLATORS</topic><topic>PLASMA</topic><topic>PLASMA DIAGNOSTICS</topic><topic>SIGNALS</topic><topic>THREE-DIMENSIONAL CALCULATIONS</topic><topic>TWO-DIMENSIONAL CALCULATIONS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yoshinaga, T.</creatorcontrib><creatorcontrib>Nagayama, Y.</creatorcontrib><creatorcontrib>Kuwahara, D.</creatorcontrib><creatorcontrib>Tsuchiya, H.</creatorcontrib><creatorcontrib>Yamaguchi, S.</creatorcontrib><creatorcontrib>Kogi, Y.</creatorcontrib><creatorcontrib>Tsuji-Iio, S.</creatorcontrib><creatorcontrib>Mase, A.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yoshinaga, T.</au><au>Nagayama, Y.</au><au>Kuwahara, D.</au><au>Tsuchiya, H.</au><au>Yamaguchi, S.</au><au>Kogi, Y.</au><au>Tsuji-Iio, S.</au><au>Mase, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Simultaneous projection and detection system of four different frequencies for microwave imaging reflectometry in Large Helical Device</atitle><jtitle>Review of scientific instruments</jtitle><addtitle>Rev Sci Instrum</addtitle><date>2010-10-01</date><risdate>2010</risdate><volume>81</volume><issue>10</issue><spage>10D915</spage><epage>10D915-4</epage><pages>10D915-10D915-4</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>A simultaneous projection/detection system of four different frequencies for microwave imaging reflectometry (MIR) was developed for three-dimensional observation of electron density fluctuations in the Large Helical Device (LHD). The microwave with four frequency components at 60.410, 61.808, 63.008, and 64.610 GHz is projected in a continuous-wave mode to illuminate the target LHD plasma. A two-dimensional horn-antenna mixer array (2D HMA) receives the reflected wave from the plasma as well as the wave from the local oscillator operating at 55.800 GHz. The first intermediate frequency (IF) signals at 4.610, 6.008, 7.208, and 8.810 GHz were confirmed to be obtained by downconversion of these microwaves using the 2D HMA. Each of these first IF components is filtered from each other and downconverted again for the superheterodyne detection. It was confirmed that both the amplitudes and the phases of the detected signals reflect the fluctuations in LHD plasmas.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><pmid>21033947</pmid><doi>10.1063/1.3491197</doi><oa>free_for_read</oa></addata></record> |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY AMPLITUDES ANTENNAS DETECTION ELECTRON DENSITY FLUCTUATIONS GHZ RANGE INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY LHD DEVICE MICROWAVE RADIATION OSCILLATORS PLASMA PLASMA DIAGNOSTICS SIGNALS THREE-DIMENSIONAL CALCULATIONS TWO-DIMENSIONAL CALCULATIONS |
| title | Simultaneous projection and detection system of four different frequencies for microwave imaging reflectometry in Large Helical Device |
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