Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A
A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emis...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Dong, C.F. [verfasserIn] Morita, S. [verfasserIn] Feng, L. [verfasserIn] Zhang, K. [verfasserIn] Zheng, D.L. [verfasserIn] Cui, Z.Y. [verfasserIn] Sun, P. [verfasserIn] Fu, B.Z. [verfasserIn] Lu, P. [verfasserIn] Shi, Z.B. [verfasserIn] Liu, Y. [verfasserIn] Yang, Q.W. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Fusion engineering and design - New York, NY [u.a.] : Elsevier, 1987, 159 |
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| Übergeordnetes Werk: |
volume:159 |
| DOI / URN: |
10.1016/j.fusengdes.2020.111785 |
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| Katalog-ID: |
ELV004791835 |
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| 245 | 1 | 0 | |a Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A |
| 264 | 1 | |c 2020 | |
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| 520 | |a A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. | ||
| 650 | 4 | |a EUV | |
| 650 | 4 | |a Impurity spectra | |
| 650 | 4 | |a Radial profile measurement | |
| 650 | 4 | |a Absolute position calibration | |
| 650 | 4 | |a Local emissivity profile | |
| 700 | 1 | |a Morita, S. |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, L. |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, K. |e verfasserin |4 aut | |
| 700 | 1 | |a Zheng, D.L. |e verfasserin |4 aut | |
| 700 | 1 | |a Cui, Z.Y. |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, P. |e verfasserin |4 aut | |
| 700 | 1 | |a Fu, B.Z. |e verfasserin |4 aut | |
| 700 | 1 | |a Lu, P. |e verfasserin |4 aut | |
| 700 | 1 | |a Shi, Z.B. |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Y. |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Q.W. |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Fusion engineering and design |d New York, NY [u.a.] : Elsevier, 1987 |g 159 |h Online-Ressource |w (DE-627)302722386 |w (DE-600)1492280-0 |w (DE-576)120883481 |x 0920-3796 |7 nnns |
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10.1016/j.fusengdes.2020.111785 doi (DE-627)ELV004791835 (ELSEVIER)S0920-3796(20)30333-1 DE-627 ger DE-627 rda eng 620 530 DE-600 33.81 bkl Dong, C.F. verfasserin aut Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A 2020 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. EUV Impurity spectra Radial profile measurement Absolute position calibration Local emissivity profile Morita, S. verfasserin aut Feng, L. verfasserin aut Zhang, K. verfasserin aut Zheng, D.L. verfasserin aut Cui, Z.Y. verfasserin aut Sun, P. verfasserin aut Fu, B.Z. verfasserin aut Lu, P. verfasserin aut Shi, Z.B. verfasserin aut Liu, Y. verfasserin aut Yang, Q.W. verfasserin aut Enthalten in Fusion engineering and design New York, NY [u.a.] : Elsevier, 1987 159 Online-Ressource (DE-627)302722386 (DE-600)1492280-0 (DE-576)120883481 0920-3796 nnns volume:159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.81 Kernfusion AR 159 |
| spelling |
10.1016/j.fusengdes.2020.111785 doi (DE-627)ELV004791835 (ELSEVIER)S0920-3796(20)30333-1 DE-627 ger DE-627 rda eng 620 530 DE-600 33.81 bkl Dong, C.F. verfasserin aut Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A 2020 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. EUV Impurity spectra Radial profile measurement Absolute position calibration Local emissivity profile Morita, S. verfasserin aut Feng, L. verfasserin aut Zhang, K. verfasserin aut Zheng, D.L. verfasserin aut Cui, Z.Y. verfasserin aut Sun, P. verfasserin aut Fu, B.Z. verfasserin aut Lu, P. verfasserin aut Shi, Z.B. verfasserin aut Liu, Y. verfasserin aut Yang, Q.W. verfasserin aut Enthalten in Fusion engineering and design New York, NY [u.a.] : Elsevier, 1987 159 Online-Ressource (DE-627)302722386 (DE-600)1492280-0 (DE-576)120883481 0920-3796 nnns volume:159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.81 Kernfusion AR 159 |
| allfields_unstemmed |
10.1016/j.fusengdes.2020.111785 doi (DE-627)ELV004791835 (ELSEVIER)S0920-3796(20)30333-1 DE-627 ger DE-627 rda eng 620 530 DE-600 33.81 bkl Dong, C.F. verfasserin aut Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A 2020 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. EUV Impurity spectra Radial profile measurement Absolute position calibration Local emissivity profile Morita, S. verfasserin aut Feng, L. verfasserin aut Zhang, K. verfasserin aut Zheng, D.L. verfasserin aut Cui, Z.Y. verfasserin aut Sun, P. verfasserin aut Fu, B.Z. verfasserin aut Lu, P. verfasserin aut Shi, Z.B. verfasserin aut Liu, Y. verfasserin aut Yang, Q.W. verfasserin aut Enthalten in Fusion engineering and design New York, NY [u.a.] : Elsevier, 1987 159 Online-Ressource (DE-627)302722386 (DE-600)1492280-0 (DE-576)120883481 0920-3796 nnns volume:159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.81 Kernfusion AR 159 |
| allfieldsGer |
10.1016/j.fusengdes.2020.111785 doi (DE-627)ELV004791835 (ELSEVIER)S0920-3796(20)30333-1 DE-627 ger DE-627 rda eng 620 530 DE-600 33.81 bkl Dong, C.F. verfasserin aut Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A 2020 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. EUV Impurity spectra Radial profile measurement Absolute position calibration Local emissivity profile Morita, S. verfasserin aut Feng, L. verfasserin aut Zhang, K. verfasserin aut Zheng, D.L. verfasserin aut Cui, Z.Y. verfasserin aut Sun, P. verfasserin aut Fu, B.Z. verfasserin aut Lu, P. verfasserin aut Shi, Z.B. verfasserin aut Liu, Y. verfasserin aut Yang, Q.W. verfasserin aut Enthalten in Fusion engineering and design New York, NY [u.a.] : Elsevier, 1987 159 Online-Ressource (DE-627)302722386 (DE-600)1492280-0 (DE-576)120883481 0920-3796 nnns volume:159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.81 Kernfusion AR 159 |
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10.1016/j.fusengdes.2020.111785 doi (DE-627)ELV004791835 (ELSEVIER)S0920-3796(20)30333-1 DE-627 ger DE-627 rda eng 620 530 DE-600 33.81 bkl Dong, C.F. verfasserin aut Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A 2020 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. EUV Impurity spectra Radial profile measurement Absolute position calibration Local emissivity profile Morita, S. verfasserin aut Feng, L. verfasserin aut Zhang, K. verfasserin aut Zheng, D.L. verfasserin aut Cui, Z.Y. verfasserin aut Sun, P. verfasserin aut Fu, B.Z. verfasserin aut Lu, P. verfasserin aut Shi, Z.B. verfasserin aut Liu, Y. verfasserin aut Yang, Q.W. verfasserin aut Enthalten in Fusion engineering and design New York, NY [u.a.] : Elsevier, 1987 159 Online-Ressource (DE-627)302722386 (DE-600)1492280-0 (DE-576)120883481 0920-3796 nnns volume:159 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.81 Kernfusion AR 159 |
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Dong, C.F. @@aut@@ Morita, S. @@aut@@ Feng, L. @@aut@@ Zhang, K. @@aut@@ Zheng, D.L. @@aut@@ Cui, Z.Y. @@aut@@ Sun, P. @@aut@@ Fu, B.Z. @@aut@@ Lu, P. @@aut@@ Shi, Z.B. @@aut@@ Liu, Y. @@aut@@ Yang, Q.W. @@aut@@ |
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Dong, C.F. |
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620 530 DE-600 33.81 bkl Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A EUV Impurity spectra Radial profile measurement Absolute position calibration Local emissivity profile |
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Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A |
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Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A |
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Dong, C.F. |
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Dong, C.F. Morita, S. Feng, L. Zhang, K. Zheng, D.L. Cui, Z.Y. Sun, P. Fu, B.Z. Lu, P. Shi, Z.B. Liu, Y. Yang, Q.W. |
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Dong, C.F. |
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10.1016/j.fusengdes.2020.111785 |
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space-resolved extreme ultraviolet spectrometer for impurity diagnostics in hl-2a |
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Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A |
| abstract |
A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. |
| abstractGer |
A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. |
| abstract_unstemmed |
A space-resolved extreme ultraviolet (EUV) spectrometer system has been developed in the HL-2A tokamak for impurity monitoring and transport studies. A charge-coupled-device (CCD) detector is mounted on a two-stage wavelength scanning mechanism for measuring the spatial profile of impurity line emissions in the wavelength range of 30−600 Å. A good spatial profile of impurity line emissions is observed throughout the lower half of the HL-2A plasma along the vertical direction by installing a space-resolved slit in front of an entrance slit. The vertical observation range is ∼43 cm covering a wide plasma area from the plasma central region to the vicinity of divertor separatrix X-point. In order to make a critical analysis of the impurity transport, in particular, in the plasma edge, an accurate position calibration in the observed vertical impurity line intensity profile is necessary. For the purpose a thin metal bar is installed at the diagnositc port. Then, the vertical position of the impurity profile can be accurately determined throughout the entire wavelength range. Based on the present method, the local emissivity profile of impurity line emissions is well reconstructed with good accuracy through Abel inversion technique. Resultant CIV and CVI local emissivity profiles show a clear difference in the carbon transport between ohmic and NBI heating phases. |
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Space-resolved extreme ultraviolet spectrometer for impurity diagnostics in HL-2A |
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Morita, S. Feng, L. Zhang, K. Zheng, D.L. Cui, Z.Y. Sun, P. Fu, B.Z. Lu, P. Shi, Z.B. Liu, Y. Yang, Q.W. |
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