The circuit of polychromator for Experimental Advanced Superconducting Tokamak edge Thomson scattering diagnostic
The detector circuit is the core component of filter polychromator which is used for scattering light analysis in Thomson scattering diagnostic, and is responsible for the precision and stability of a system. High signal-to-noise and stability are primary requirements for the diagnostic. Recently, a...
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| Veröffentlicht in: | Review of scientific instruments 2013-09, Vol.84 (9), p.093504-093504 |
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| container_end_page | 093504 |
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| container_issue | 9 |
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| container_title | Review of scientific instruments |
| container_volume | 84 |
| creator | Zang, Qing Hsieh, C L Zhao, Junyu Chen, Hui Li, Fengjuan |
| description | The detector circuit is the core component of filter polychromator which is used for scattering light analysis in Thomson scattering diagnostic, and is responsible for the precision and stability of a system. High signal-to-noise and stability are primary requirements for the diagnostic. Recently, an upgraded detector circuit for weak light detecting in Experimental Advanced Superconducting Tokamak (EAST) edge Thomson scattering system has been designed, which can be used for the measurement of large electron temperature (T(e)) gradient and low electron density (n(e)). In this new circuit, a thermoelectric-cooled avalanche photodiode with the aid circuit is involved for increasing stability and enhancing signal-to-noise ratio (SNR), especially the circuit will never be influenced by ambient temperature. These features are expected to improve the accuracy of EAST Thomson diagnostic dramatically. Related mechanical construction of the circuit is redesigned as well for heat-sinking and installation. All parameters are optimized, and SNR is dramatically improved. The number of minimum detectable photons is only 10. |
| doi_str_mv | 10.1063/1.4820561 |
| format | Article |
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High signal-to-noise and stability are primary requirements for the diagnostic. Recently, an upgraded detector circuit for weak light detecting in Experimental Advanced Superconducting Tokamak (EAST) edge Thomson scattering system has been designed, which can be used for the measurement of large electron temperature (T(e)) gradient and low electron density (n(e)). In this new circuit, a thermoelectric-cooled avalanche photodiode with the aid circuit is involved for increasing stability and enhancing signal-to-noise ratio (SNR), especially the circuit will never be influenced by ambient temperature. These features are expected to improve the accuracy of EAST Thomson diagnostic dramatically. Related mechanical construction of the circuit is redesigned as well for heat-sinking and installation. All parameters are optimized, and SNR is dramatically improved. 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High signal-to-noise and stability are primary requirements for the diagnostic. Recently, an upgraded detector circuit for weak light detecting in Experimental Advanced Superconducting Tokamak (EAST) edge Thomson scattering system has been designed, which can be used for the measurement of large electron temperature (T(e)) gradient and low electron density (n(e)). In this new circuit, a thermoelectric-cooled avalanche photodiode with the aid circuit is involved for increasing stability and enhancing signal-to-noise ratio (SNR), especially the circuit will never be influenced by ambient temperature. These features are expected to improve the accuracy of EAST Thomson diagnostic dramatically. Related mechanical construction of the circuit is redesigned as well for heat-sinking and installation. All parameters are optimized, and SNR is dramatically improved. The number of minimum detectable photons is only 10.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>ACCURACY</subject><subject>AMBIENT TEMPERATURE</subject><subject>ELECTRON DENSITY</subject><subject>ELECTRON TEMPERATURE</subject><subject>HT-7U TOKAMAK</subject><subject>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</subject><subject>LIGHT SCATTERING</subject><subject>OPTICAL FILTERS</subject><subject>PHOTODIODES</subject><subject>PHOTONS</subject><subject>PLASMA DIAGNOSTICS</subject><subject>READOUT SYSTEMS</subject><subject>SIGNAL-TO-NOISE RATIO</subject><subject>SIGNALS</subject><subject>TEMPERATURE MEASUREMENT</subject><subject>THOMSON SCATTERING</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNo9kUtLAzEUhYMotlYX_gEJuNHF1LwmM10W8QWCC8d1SG7SduzMpJ1kRP-9Ka1eCIGbL-dezkHokpIpJZLf0akoGcklPUJjSspZVkjGj9GYEC4yWYhyhM5C-CSpckpP0YiJRJVMjtG2WjkMdQ9DHbFf4I1vfmDV-1ZH3-NFOg_fG9fXreuibvDcfukOnMXvQ-qC7-wAse6WuPJr3eo1dnbpcLXybfAdDqBjTJ_Tu631svMh1nCOTha6Ce7icE_Qx-NDdf-cvb49vdzPXzPgOYmZAJaD5UYYDjnRpDAuNwS4sKLkhdSMuJmRRkIBkjMprcxnghhSMlMyXsz4BF3vdXdTVYA6OliljTsHUbFUyZw8UTd7atP77eBCVG0dwDWN7pwfgqJCcF6KImlO0O0ehd6H0LuF2iRfdP-jKFG7HBRVhxwSe3WQHUzr7D_5Zzz_BXfIgqk</recordid><startdate>20130901</startdate><enddate>20130901</enddate><creator>Zang, Qing</creator><creator>Hsieh, C L</creator><creator>Zhao, Junyu</creator><creator>Chen, Hui</creator><creator>Li, Fengjuan</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>20130901</creationdate><title>The circuit of polychromator for Experimental Advanced Superconducting Tokamak edge Thomson scattering diagnostic</title><author>Zang, Qing ; Hsieh, C L ; Zhao, Junyu ; Chen, Hui ; Li, Fengjuan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c350t-4c25cd3b4b3c50a07be5b0c34d48376a20e9b6b6c7c63266d65940b082b823793</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>ACCURACY</topic><topic>AMBIENT TEMPERATURE</topic><topic>ELECTRON DENSITY</topic><topic>ELECTRON TEMPERATURE</topic><topic>HT-7U TOKAMAK</topic><topic>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</topic><topic>LIGHT SCATTERING</topic><topic>OPTICAL FILTERS</topic><topic>PHOTODIODES</topic><topic>PHOTONS</topic><topic>PLASMA DIAGNOSTICS</topic><topic>READOUT SYSTEMS</topic><topic>SIGNAL-TO-NOISE RATIO</topic><topic>SIGNALS</topic><topic>TEMPERATURE MEASUREMENT</topic><topic>THOMSON SCATTERING</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zang, Qing</creatorcontrib><creatorcontrib>Hsieh, C L</creatorcontrib><creatorcontrib>Zhao, Junyu</creatorcontrib><creatorcontrib>Chen, Hui</creatorcontrib><creatorcontrib>Li, Fengjuan</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>Zang, Qing</au><au>Hsieh, C L</au><au>Zhao, Junyu</au><au>Chen, Hui</au><au>Li, Fengjuan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The circuit of polychromator for Experimental Advanced Superconducting Tokamak edge Thomson scattering diagnostic</atitle><jtitle>Review of scientific instruments</jtitle><addtitle>Rev Sci Instrum</addtitle><date>2013-09-01</date><risdate>2013</risdate><volume>84</volume><issue>9</issue><spage>093504</spage><epage>093504</epage><pages>093504-093504</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><abstract>The detector circuit is the core component of filter polychromator which is used for scattering light analysis in Thomson scattering diagnostic, and is responsible for the precision and stability of a system. High signal-to-noise and stability are primary requirements for the diagnostic. Recently, an upgraded detector circuit for weak light detecting in Experimental Advanced Superconducting Tokamak (EAST) edge Thomson scattering system has been designed, which can be used for the measurement of large electron temperature (T(e)) gradient and low electron density (n(e)). In this new circuit, a thermoelectric-cooled avalanche photodiode with the aid circuit is involved for increasing stability and enhancing signal-to-noise ratio (SNR), especially the circuit will never be influenced by ambient temperature. These features are expected to improve the accuracy of EAST Thomson diagnostic dramatically. Related mechanical construction of the circuit is redesigned as well for heat-sinking and installation. All parameters are optimized, and SNR is dramatically improved. The number of minimum detectable photons is only 10.</abstract><cop>United States</cop><pmid>24089826</pmid><doi>10.1063/1.4820561</doi><tpages>1</tpages></addata></record> |
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| ispartof | Review of scientific instruments, 2013-09, Vol.84 (9), p.093504-093504 |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY ACCURACY AMBIENT TEMPERATURE ELECTRON DENSITY ELECTRON TEMPERATURE HT-7U TOKAMAK INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY LIGHT SCATTERING OPTICAL FILTERS PHOTODIODES PHOTONS PLASMA DIAGNOSTICS READOUT SYSTEMS SIGNAL-TO-NOISE RATIO SIGNALS TEMPERATURE MEASUREMENT THOMSON SCATTERING |
| title | The circuit of polychromator for Experimental Advanced Superconducting Tokamak edge Thomson scattering diagnostic |
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