Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX Upgrade
ICRF (ion cyclotron range of frequencies) heating experiments were performed in D-H plasmas at various H concentrations on ASDEX Upgrade. The rf power was modulated to measure the electron power deposition profile from electron temperature modulation. To minimize the contribution from indirect colli...
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| creator | Tsujii, N. University of Tokyo, Kashiwa D'Inca, R. Bilato, R. Bobkov, Vl. V. Brambilla, M. Schneider, P. Noterdaeme, J.-M. Van Eester, D. Lerche, E. A. LPP-ERM/KMS, Association EURATOM - Belgian State, Brussels Harvey, R. W. Jaeger, E. F. Collaboration: ASDEX Upgrade Team |
| description | ICRF (ion cyclotron range of frequencies) heating experiments were performed in D-H plasmas at various H concentrations on ASDEX Upgrade. The rf power was modulated to measure the electron power deposition profile from electron temperature modulation. To minimize the contribution from indirect collisional heating and the effect of radial transport, the rf power was modulated at 50 Hz. However, peaking of electron temperature modulation was still observed around the hydrogen cyclotron resonance indicating collisional heating contribution. Time dependent simulation of the hydrogen distribution function was performed for the discharges, using the full-wave code AORSA (E.F. Jaeger, et al., Phys. Plasmas, Vol. 8, page 1573 (2001)) coupled to the Fokker-Planck code CQL3D (R.W. Harvey, et al., Proc. IAEA (1992)). In the present experimental conditions, it was found that modulation of the collisional heating was comparable to that of direct wave damping. Impact of radial transport was also analyzed and found to appreciably smear out the modulation profile and reduce the phase delay. |
| doi_str_mv | 10.1063/1.4864532 |
| format | Conference Proceeding |
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V. ; Brambilla, M. ; Schneider, P. ; Noterdaeme, J.-M. ; Van Eester, D. ; Lerche, E. A. ; LPP-ERM/KMS, Association EURATOM - Belgian State, Brussels ; Harvey, R. W. ; Jaeger, E. F. ; Collaboration: ASDEX Upgrade Team</creator><creatorcontrib>Tsujii, N. ; University of Tokyo, Kashiwa ; D'Inca, R. ; Bilato, R. ; Bobkov, Vl. V. ; Brambilla, M. ; Schneider, P. ; Noterdaeme, J.-M. ; Van Eester, D. ; Lerche, E. A. ; LPP-ERM/KMS, Association EURATOM - Belgian State, Brussels ; Harvey, R. W. ; Jaeger, E. F. ; Collaboration: ASDEX Upgrade Team</creatorcontrib><description>ICRF (ion cyclotron range of frequencies) heating experiments were performed in D-H plasmas at various H concentrations on ASDEX Upgrade. The rf power was modulated to measure the electron power deposition profile from electron temperature modulation. To minimize the contribution from indirect collisional heating and the effect of radial transport, the rf power was modulated at 50 Hz. However, peaking of electron temperature modulation was still observed around the hydrogen cyclotron resonance indicating collisional heating contribution. Time dependent simulation of the hydrogen distribution function was performed for the discharges, using the full-wave code AORSA (E.F. Jaeger, et al., Phys. Plasmas, Vol. 8, page 1573 (2001)) coupled to the Fokker-Planck code CQL3D (R.W. Harvey, et al., Proc. IAEA (1992)). In the present experimental conditions, it was found that modulation of the collisional heating was comparable to that of direct wave damping. Impact of radial transport was also analyzed and found to appreciably smear out the modulation profile and reduce the phase delay.</description><identifier>ISSN: 0094-243X</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/1.4864532</identifier><language>eng</language><publisher>United States</publisher><subject>ASDEX TOKAMAK ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; COLLISIONAL HEATING ; CYCLOTRONS ; DISTRIBUTION FUNCTIONS ; ELECTRON TEMPERATURE ; ELECTRONS ; FOKKER-PLANCK EQUATION ; HEAT TRANSFER ; HYDROGEN ; IAEA ; ICR HEATING ; ION CYCLOTRON-RESONANCE ; IONS ; MODULATION ; PLASMA ; SIMULATION ; TIME DEPENDENCE</subject><ispartof>AIP conference proceedings, 2014, Vol.1580 (1)</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,315,781,785,886,27929,27930</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22263862$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Tsujii, N.</creatorcontrib><creatorcontrib>University of Tokyo, Kashiwa</creatorcontrib><creatorcontrib>D'Inca, R.</creatorcontrib><creatorcontrib>Bilato, R.</creatorcontrib><creatorcontrib>Bobkov, Vl. V.</creatorcontrib><creatorcontrib>Brambilla, M.</creatorcontrib><creatorcontrib>Schneider, P.</creatorcontrib><creatorcontrib>Noterdaeme, J.-M.</creatorcontrib><creatorcontrib>Van Eester, D.</creatorcontrib><creatorcontrib>Lerche, E. A.</creatorcontrib><creatorcontrib>LPP-ERM/KMS, Association EURATOM - Belgian State, Brussels</creatorcontrib><creatorcontrib>Harvey, R. W.</creatorcontrib><creatorcontrib>Jaeger, E. F.</creatorcontrib><creatorcontrib>Collaboration: ASDEX Upgrade Team</creatorcontrib><title>Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX Upgrade</title><title>AIP conference proceedings</title><description>ICRF (ion cyclotron range of frequencies) heating experiments were performed in D-H plasmas at various H concentrations on ASDEX Upgrade. The rf power was modulated to measure the electron power deposition profile from electron temperature modulation. To minimize the contribution from indirect collisional heating and the effect of radial transport, the rf power was modulated at 50 Hz. However, peaking of electron temperature modulation was still observed around the hydrogen cyclotron resonance indicating collisional heating contribution. Time dependent simulation of the hydrogen distribution function was performed for the discharges, using the full-wave code AORSA (E.F. Jaeger, et al., Phys. Plasmas, Vol. 8, page 1573 (2001)) coupled to the Fokker-Planck code CQL3D (R.W. Harvey, et al., Proc. IAEA (1992)). In the present experimental conditions, it was found that modulation of the collisional heating was comparable to that of direct wave damping. Impact of radial transport was also analyzed and found to appreciably smear out the modulation profile and reduce the phase delay.</description><subject>ASDEX TOKAMAK</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>COLLISIONAL HEATING</subject><subject>CYCLOTRONS</subject><subject>DISTRIBUTION FUNCTIONS</subject><subject>ELECTRON TEMPERATURE</subject><subject>ELECTRONS</subject><subject>FOKKER-PLANCK EQUATION</subject><subject>HEAT TRANSFER</subject><subject>HYDROGEN</subject><subject>IAEA</subject><subject>ICR HEATING</subject><subject>ION CYCLOTRON-RESONANCE</subject><subject>IONS</subject><subject>MODULATION</subject><subject>PLASMA</subject><subject>SIMULATION</subject><subject>TIME DEPENDENCE</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2014</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNotj81KAzEYRYMoWKsL3yDgemq-ZCY_y1LbWigIWqG7kp9v7Mg0KZOIPr4DurocOBy4hNwDmwGT4hFmtZZ1I_gFmUDTQKUkyEsyYczUFa_F_prc5PzJGDdK6QnZL9sWfaGppT71fZe7FG1Pj2gLLYONucWBdpFuFq8rek7fI51S-OptGUWKP2ccuhPGMRDp_O1puafv54_BBrwlV63tM97975TsVsvd4rnavqw3i_m2Shx0qSQGZMxpMAJkQOuMMyCUb0TNQ3BG1RBaB2CV9sxItMIZbKRErYREJ6bk4S-bcukO2XcF_dGnGMdTB865FFpy8QtB91IP</recordid><startdate>20140101</startdate><enddate>20140101</enddate><creator>Tsujii, N.</creator><creator>University of Tokyo, Kashiwa</creator><creator>D'Inca, R.</creator><creator>Bilato, R.</creator><creator>Bobkov, Vl. V.</creator><creator>Brambilla, M.</creator><creator>Schneider, P.</creator><creator>Noterdaeme, J.-M.</creator><creator>Van Eester, D.</creator><creator>Lerche, E. A.</creator><creator>LPP-ERM/KMS, Association EURATOM - Belgian State, Brussels</creator><creator>Harvey, R. W.</creator><creator>Jaeger, E. F.</creator><creator>Collaboration: ASDEX Upgrade Team</creator><scope>OTOTI</scope></search><sort><creationdate>20140101</creationdate><title>Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX Upgrade</title><author>Tsujii, N. ; University of Tokyo, Kashiwa ; D'Inca, R. ; Bilato, R. ; Bobkov, Vl. V. ; Brambilla, M. ; Schneider, P. ; Noterdaeme, J.-M. ; Van Eester, D. ; Lerche, E. A. ; LPP-ERM/KMS, Association EURATOM - Belgian State, Brussels ; Harvey, R. W. ; Jaeger, E. F. ; Collaboration: ASDEX Upgrade Team</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-o218t-6ede00b819316deab9b9137c5342ddb9741dfb11a78c096ea3b9e566e8736eb3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2014</creationdate><topic>ASDEX TOKAMAK</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>COLLISIONAL HEATING</topic><topic>CYCLOTRONS</topic><topic>DISTRIBUTION FUNCTIONS</topic><topic>ELECTRON TEMPERATURE</topic><topic>ELECTRONS</topic><topic>FOKKER-PLANCK EQUATION</topic><topic>HEAT TRANSFER</topic><topic>HYDROGEN</topic><topic>IAEA</topic><topic>ICR HEATING</topic><topic>ION CYCLOTRON-RESONANCE</topic><topic>IONS</topic><topic>MODULATION</topic><topic>PLASMA</topic><topic>SIMULATION</topic><topic>TIME DEPENDENCE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tsujii, N.</creatorcontrib><creatorcontrib>University of Tokyo, Kashiwa</creatorcontrib><creatorcontrib>D'Inca, R.</creatorcontrib><creatorcontrib>Bilato, R.</creatorcontrib><creatorcontrib>Bobkov, Vl. V.</creatorcontrib><creatorcontrib>Brambilla, M.</creatorcontrib><creatorcontrib>Schneider, P.</creatorcontrib><creatorcontrib>Noterdaeme, J.-M.</creatorcontrib><creatorcontrib>Van Eester, D.</creatorcontrib><creatorcontrib>Lerche, E. A.</creatorcontrib><creatorcontrib>LPP-ERM/KMS, Association EURATOM - Belgian State, Brussels</creatorcontrib><creatorcontrib>Harvey, R. W.</creatorcontrib><creatorcontrib>Jaeger, E. F.</creatorcontrib><creatorcontrib>Collaboration: ASDEX Upgrade Team</creatorcontrib><collection>OSTI.GOV</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tsujii, N.</au><au>University of Tokyo, Kashiwa</au><au>D'Inca, R.</au><au>Bilato, R.</au><au>Bobkov, Vl. V.</au><au>Brambilla, M.</au><au>Schneider, P.</au><au>Noterdaeme, J.-M.</au><au>Van Eester, D.</au><au>Lerche, E. A.</au><au>LPP-ERM/KMS, Association EURATOM - Belgian State, Brussels</au><au>Harvey, R. W.</au><au>Jaeger, E. F.</au><au>Collaboration: ASDEX Upgrade Team</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX Upgrade</atitle><btitle>AIP conference proceedings</btitle><date>2014-01-01</date><risdate>2014</risdate><volume>1580</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><abstract>ICRF (ion cyclotron range of frequencies) heating experiments were performed in D-H plasmas at various H concentrations on ASDEX Upgrade. The rf power was modulated to measure the electron power deposition profile from electron temperature modulation. To minimize the contribution from indirect collisional heating and the effect of radial transport, the rf power was modulated at 50 Hz. However, peaking of electron temperature modulation was still observed around the hydrogen cyclotron resonance indicating collisional heating contribution. Time dependent simulation of the hydrogen distribution function was performed for the discharges, using the full-wave code AORSA (E.F. Jaeger, et al., Phys. Plasmas, Vol. 8, page 1573 (2001)) coupled to the Fokker-Planck code CQL3D (R.W. Harvey, et al., Proc. IAEA (1992)). In the present experimental conditions, it was found that modulation of the collisional heating was comparable to that of direct wave damping. Impact of radial transport was also analyzed and found to appreciably smear out the modulation profile and reduce the phase delay.</abstract><cop>United States</cop><doi>10.1063/1.4864532</doi><oa>free_for_read</oa></addata></record> |
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| subjects | ASDEX TOKAMAK CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COLLISIONAL HEATING CYCLOTRONS DISTRIBUTION FUNCTIONS ELECTRON TEMPERATURE ELECTRONS FOKKER-PLANCK EQUATION HEAT TRANSFER HYDROGEN IAEA ICR HEATING ION CYCLOTRON-RESONANCE IONS MODULATION PLASMA SIMULATION TIME DEPENDENCE |
| title | Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX Upgrade |
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