Calibration of a high spatial resolution laser two-color heterodyne interferometer for density profile measurements in the TJ-II stellarator
A high spatial resolution two-color ( C O 2 , λ = 10.6 μ m , He-Ne, λ = 633 nm ) interferometer for density profile measurements in the TJ-II stellarator is under development and installation, based in the currently operational single channel two-color heterodyne interferometer. To achieve the objec...
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| Veröffentlicht in: | Review of scientific instruments 2008-10, Vol.79 (10), p.10E713-10E713-5 |
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| creator | Acedo, Pablo Pedreira, P. Criado, A. R. Lamela, Horacio Sánchez, Miguel Sánchez, Joaquín |
| description | A high spatial resolution two-color (
C
O
2
,
λ
=
10.6
μ
m
, He-Ne,
λ
=
633
nm
) interferometer for density profile measurements in the TJ-II stellarator is under development and installation, based in the currently operational single channel two-color heterodyne interferometer. To achieve the objectives of 32 channels, with
4
-
5
mm
lateral separation between plasma chords, careful design and calibration of the interferometric waveforms for both the measurement and vibration compensation wavelengths are undertaken. The first step has been to set up in our laboratories an expanded-beam heterodyne/homodyne interferometer to evaluate the quality of both interferometric wavefronts, a reported source of poor vibration compensation and thus low resolution in the density profile measurements. This novel interferometric setup has allowed us to calibrate the spatial resolution in the profile measurements resulting in
∼
2
mm
lateral resolution in the reconstruction of the interferometric wavefront. |
| doi_str_mv | 10.1063/1.2973326 |
| format | Article |
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C
O
2
,
λ
=
10.6
μ
m
, He-Ne,
λ
=
633
nm
) interferometer for density profile measurements in the TJ-II stellarator is under development and installation, based in the currently operational single channel two-color heterodyne interferometer. To achieve the objectives of 32 channels, with
4
-
5
mm
lateral separation between plasma chords, careful design and calibration of the interferometric waveforms for both the measurement and vibration compensation wavelengths are undertaken. The first step has been to set up in our laboratories an expanded-beam heterodyne/homodyne interferometer to evaluate the quality of both interferometric wavefronts, a reported source of poor vibration compensation and thus low resolution in the density profile measurements. This novel interferometric setup has allowed us to calibrate the spatial resolution in the profile measurements resulting in
∼
2
mm
lateral resolution in the reconstruction of the interferometric wavefront.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/1.2973326</identifier><identifier>PMID: 19044531</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>BEAMS ; CALIBRATION ; CARBON DIOXIDE ; DESIGN ; GAS LASERS ; INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ; INTERFEROMETERS ; PLASMA ; PLASMA DENSITY ; PLASMA DIAGNOSTICS ; SPATIAL RESOLUTION ; STELLARATORS ; WAVE FORMS</subject><ispartof>Review of scientific instruments, 2008-10, Vol.79 (10), p.10E713-10E713-5</ispartof><rights>2008 American Institute of Physics</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c401t-9812346301ffdd5481df9a0603c73703a5191e515e626c3ccda0a318bc89d7783</citedby><cites>FETCH-LOGICAL-c401t-9812346301ffdd5481df9a0603c73703a5191e515e626c3ccda0a318bc89d7783</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/10.1063/1.2973326$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>230,314,780,784,794,885,1558,4510,27923,27924,76155,76161</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19044531$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/21266538$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Acedo, Pablo</creatorcontrib><creatorcontrib>Pedreira, P.</creatorcontrib><creatorcontrib>Criado, A. R.</creatorcontrib><creatorcontrib>Lamela, Horacio</creatorcontrib><creatorcontrib>Sánchez, Miguel</creatorcontrib><creatorcontrib>Sánchez, Joaquín</creatorcontrib><title>Calibration of a high spatial resolution laser two-color heterodyne interferometer for density profile measurements in the TJ-II stellarator</title><title>Review of scientific instruments</title><addtitle>Rev Sci Instrum</addtitle><description>A high spatial resolution two-color (
C
O
2
,
λ
=
10.6
μ
m
, He-Ne,
λ
=
633
nm
) interferometer for density profile measurements in the TJ-II stellarator is under development and installation, based in the currently operational single channel two-color heterodyne interferometer. To achieve the objectives of 32 channels, with
4
-
5
mm
lateral separation between plasma chords, careful design and calibration of the interferometric waveforms for both the measurement and vibration compensation wavelengths are undertaken. The first step has been to set up in our laboratories an expanded-beam heterodyne/homodyne interferometer to evaluate the quality of both interferometric wavefronts, a reported source of poor vibration compensation and thus low resolution in the density profile measurements. This novel interferometric setup has allowed us to calibrate the spatial resolution in the profile measurements resulting in
∼
2
mm
lateral resolution in the reconstruction of the interferometric wavefront.</description><subject>BEAMS</subject><subject>CALIBRATION</subject><subject>CARBON DIOXIDE</subject><subject>DESIGN</subject><subject>GAS LASERS</subject><subject>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</subject><subject>INTERFEROMETERS</subject><subject>PLASMA</subject><subject>PLASMA DENSITY</subject><subject>PLASMA DIAGNOSTICS</subject><subject>SPATIAL RESOLUTION</subject><subject>STELLARATORS</subject><subject>WAVE FORMS</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNp1kcFq3DAQhkVoaLZpD32BIigUenCisWzZvgTCkqRbArmkZ6GVR7GKbG0kmbDv0IeOnF1oL9VFmpmPnxEfIZ-BXQAT_BIuyq7hvBQnZAWs7YpGlPwdWTHGq0I0VXtGPsT4m-VTA7wnZ9Cxqqo5rMiftXJ2G1SyfqLeUEUH-zTQuMsd5WjA6N38NnQqYqDpxRfaOx_ogAmD7_cTUjvlp8nVuPSoydMep2jTnu6CN9YhHVHFOeCIU4qZp2lA-viz2GxoTOicyhv48JGcGuUifjre5-TX7c3j-kdx_3C3WV_fF7pikIquhZJXgjMwpu_rqoXedIoJxnXDG8ZVDR1gDTWKUmiuda-Y4tBuddv1TdPyc_L1kOtjsjJqm1AP2k8T6iRLKIWo-UJ9O1D5D88zxiRHG_Wy7IR-jlJ0bV2JcgG_H0AdfIwBjdwFO6qwl8DkIkiCPArK7Jdj6Lwdsf9LHo1k4OoALGu9afl_2j_upDdSyeyOvwLxJKGN</recordid><startdate>20081001</startdate><enddate>20081001</enddate><creator>Acedo, Pablo</creator><creator>Pedreira, P.</creator><creator>Criado, A. R.</creator><creator>Lamela, Horacio</creator><creator>Sánchez, Miguel</creator><creator>Sánchez, Joaquín</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>20081001</creationdate><title>Calibration of a high spatial resolution laser two-color heterodyne interferometer for density profile measurements in the TJ-II stellarator</title><author>Acedo, Pablo ; Pedreira, P. ; Criado, A. R. ; Lamela, Horacio ; Sánchez, Miguel ; Sánchez, Joaquín</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c401t-9812346301ffdd5481df9a0603c73703a5191e515e626c3ccda0a318bc89d7783</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>BEAMS</topic><topic>CALIBRATION</topic><topic>CARBON DIOXIDE</topic><topic>DESIGN</topic><topic>GAS LASERS</topic><topic>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</topic><topic>INTERFEROMETERS</topic><topic>PLASMA</topic><topic>PLASMA DENSITY</topic><topic>PLASMA DIAGNOSTICS</topic><topic>SPATIAL RESOLUTION</topic><topic>STELLARATORS</topic><topic>WAVE FORMS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Acedo, Pablo</creatorcontrib><creatorcontrib>Pedreira, P.</creatorcontrib><creatorcontrib>Criado, A. R.</creatorcontrib><creatorcontrib>Lamela, Horacio</creatorcontrib><creatorcontrib>Sánchez, Miguel</creatorcontrib><creatorcontrib>Sánchez, Joaquín</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>Acedo, Pablo</au><au>Pedreira, P.</au><au>Criado, A. R.</au><au>Lamela, Horacio</au><au>Sánchez, Miguel</au><au>Sánchez, Joaquín</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Calibration of a high spatial resolution laser two-color heterodyne interferometer for density profile measurements in the TJ-II stellarator</atitle><jtitle>Review of scientific instruments</jtitle><addtitle>Rev Sci Instrum</addtitle><date>2008-10-01</date><risdate>2008</risdate><volume>79</volume><issue>10</issue><spage>10E713</spage><epage>10E713-5</epage><pages>10E713-10E713-5</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>A high spatial resolution two-color (
C
O
2
,
λ
=
10.6
μ
m
, He-Ne,
λ
=
633
nm
) interferometer for density profile measurements in the TJ-II stellarator is under development and installation, based in the currently operational single channel two-color heterodyne interferometer. To achieve the objectives of 32 channels, with
4
-
5
mm
lateral separation between plasma chords, careful design and calibration of the interferometric waveforms for both the measurement and vibration compensation wavelengths are undertaken. The first step has been to set up in our laboratories an expanded-beam heterodyne/homodyne interferometer to evaluate the quality of both interferometric wavefronts, a reported source of poor vibration compensation and thus low resolution in the density profile measurements. This novel interferometric setup has allowed us to calibrate the spatial resolution in the profile measurements resulting in
∼
2
mm
lateral resolution in the reconstruction of the interferometric wavefront.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><pmid>19044531</pmid><doi>10.1063/1.2973326</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0034-6748 |
| ispartof | Review of scientific instruments, 2008-10, Vol.79 (10), p.10E713-10E713-5 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_osti_scitechconnect_21266538 |
| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | BEAMS CALIBRATION CARBON DIOXIDE DESIGN GAS LASERS INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY INTERFEROMETERS PLASMA PLASMA DENSITY PLASMA DIAGNOSTICS SPATIAL RESOLUTION STELLARATORS WAVE FORMS |
| title | Calibration of a high spatial resolution laser two-color heterodyne interferometer for density profile measurements in the TJ-II stellarator |
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