Development of multichord ion Doppler spectroscopy system for toroidal flow measurement of field-reversed configuration
A double-chord ion Doppler spectroscopy (IDS) system was developed to measure the ion temperature and flow velocity of field-reversed configuration (FRC) plasmas in the FRC amplification via a translation-collisional merging (FAT-CM) device. Adopting a Czerny–Turner mount monochromator and 16-channe...
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| Veröffentlicht in: | Review of scientific instruments 2022-12, Vol.93 (12), p.123512-123512 |
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| creator | Araoka, K. Asai, T. Kobayashi, D. Seki, T. Takahashi, T. Morelli, J. Gota, H. |
| description | A double-chord ion Doppler spectroscopy (IDS) system was developed to measure the ion temperature and flow velocity of field-reversed configuration (FRC) plasmas in the FRC amplification via a translation-collisional merging (FAT-CM) device. Adopting a Czerny–Turner mount monochromator and 16-channel photomultiplier tube array, the developed IDS system achieves high wavelength resolution and fast time response. In addition, two vertically aligned optical paths share the optical system up to the monochromator and then branch just before the detector, successfully reducing crosstalk to |
| doi_str_mv | 10.1063/5.0101878 |
| format | Article |
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Adopting a Czerny–Turner mount monochromator and 16-channel photomultiplier tube array, the developed IDS system achieves high wavelength resolution and fast time response. In addition, two vertically aligned optical paths share the optical system up to the monochromator and then branch just before the detector, successfully reducing crosstalk to <1%. The Doppler broadening was measured at two measurement points in the FAT-CM device, simultaneously, and ion temperatures of ∼50 eV were measured. Toroidal spin-up from 7 to 15 km/s and a steady flow velocity of ∼10 km/s were estimated from the Doppler shift obtained by the developed system. The observation of the toroidal flow velocity and the spatial profile of the ion temperature of the FRC plasma in the FAT-CM device were realized. These spectroscopic diagnostic’s double chord capabilities will aid in understanding and improving the FRC plasmas.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/5.0101878</identifier><identifier>PMID: 36586891</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>Configurations ; Crosstalk ; Doppler effect ; Flow measurement ; Flow velocity ; Ion temperature ; Optical paths ; Photomultiplier tubes ; Plasmas (physics) ; Spectroscopic analysis ; Spectrum analysis ; Steady flow ; Time response</subject><ispartof>Review of scientific instruments, 2022-12, Vol.93 (12), p.123512-123512</ispartof><rights>Author(s)</rights><rights>2022 Author(s). 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These spectroscopic diagnostic’s double chord capabilities will aid in understanding and improving the FRC plasmas.</description><subject>Configurations</subject><subject>Crosstalk</subject><subject>Doppler effect</subject><subject>Flow measurement</subject><subject>Flow velocity</subject><subject>Ion temperature</subject><subject>Optical paths</subject><subject>Photomultiplier tubes</subject><subject>Plasmas (physics)</subject><subject>Spectroscopic analysis</subject><subject>Spectrum analysis</subject><subject>Steady flow</subject><subject>Time response</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9kU1P3DAQhq0KBAvl0D9QWeJSKmXrj9iOjxXQFgmJC5yjxBmXICdObQe0_x4vu0slkJjLXB49M_MOQl8oWVIi-Q-xJJTQSlWf0IKSShdKMr6HFoTwspCqrA7RUYwPJJeg9AAdcikqWWm6QE8X8AjOTwOMCXuLh9ml3tz70OHej_jCT5ODgOMEJgUfjZ9WOK5iggFbH3Dywfdd47B1_gkP0MQ5wM5le3BdEfKAEKHDxo-2_zuHJmXzZ7RvGxfhZNuP0d2vy9vzP8X1ze-r85_XheFKp0KJtjOqbPJ5xrCWVFKb1nJmmKSKSkZEq4ikrCRGSM1103FOSmMNcGYtU_wYfdt4p-D_zRBTPfTRgHPNCH6ONVNCa0mlIBk9fYM--DmMebs1JbRkTK-FZxvK5DhiAFtPoR-asKopqdffqEW9_UZmv26NcztA90ru4s_A9w0QTZ9ecnllHn34b6qnzn4Evx_9DBNtod0</recordid><startdate>20221201</startdate><enddate>20221201</enddate><creator>Araoka, K.</creator><creator>Asai, T.</creator><creator>Kobayashi, D.</creator><creator>Seki, T.</creator><creator>Takahashi, T.</creator><creator>Morelli, J.</creator><creator>Gota, H.</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-2681-2336</orcidid><orcidid>https://orcid.org/0000-0002-9230-0865</orcidid><orcidid>https://orcid.org/0000-0001-9440-0117</orcidid><orcidid>https://orcid.org/0000-0003-1015-8197</orcidid><orcidid>https://orcid.org/0000-0002-7688-6771</orcidid><orcidid>https://orcid.org/0000-0001-6475-2912</orcidid></search><sort><creationdate>20221201</creationdate><title>Development of multichord ion Doppler spectroscopy system for toroidal flow measurement of field-reversed configuration</title><author>Araoka, K. ; Asai, T. ; Kobayashi, D. ; Seki, T. ; Takahashi, T. ; Morelli, J. ; Gota, H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c379t-75bdc74a101cc2b0869cbf32c261716205b7061240c56939ad3304cfce32ff273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Configurations</topic><topic>Crosstalk</topic><topic>Doppler effect</topic><topic>Flow measurement</topic><topic>Flow velocity</topic><topic>Ion temperature</topic><topic>Optical paths</topic><topic>Photomultiplier tubes</topic><topic>Plasmas (physics)</topic><topic>Spectroscopic analysis</topic><topic>Spectrum analysis</topic><topic>Steady flow</topic><topic>Time response</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Araoka, K.</creatorcontrib><creatorcontrib>Asai, T.</creatorcontrib><creatorcontrib>Kobayashi, D.</creatorcontrib><creatorcontrib>Seki, T.</creatorcontrib><creatorcontrib>Takahashi, T.</creatorcontrib><creatorcontrib>Morelli, J.</creatorcontrib><creatorcontrib>Gota, H.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Araoka, K.</au><au>Asai, T.</au><au>Kobayashi, D.</au><au>Seki, T.</au><au>Takahashi, T.</au><au>Morelli, J.</au><au>Gota, H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Development of multichord ion Doppler spectroscopy system for toroidal flow measurement of field-reversed configuration</atitle><jtitle>Review of scientific instruments</jtitle><addtitle>Rev Sci Instrum</addtitle><date>2022-12-01</date><risdate>2022</risdate><volume>93</volume><issue>12</issue><spage>123512</spage><epage>123512</epage><pages>123512-123512</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>A double-chord ion Doppler spectroscopy (IDS) system was developed to measure the ion temperature and flow velocity of field-reversed configuration (FRC) plasmas in the FRC amplification via a translation-collisional merging (FAT-CM) device. 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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Configurations Crosstalk Doppler effect Flow measurement Flow velocity Ion temperature Optical paths Photomultiplier tubes Plasmas (physics) Spectroscopic analysis Spectrum analysis Steady flow Time response |
| title | Development of multichord ion Doppler spectroscopy system for toroidal flow measurement of field-reversed configuration |
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