On the avalanche generation of runaway electrons during tokamak disruptions
A simple zero dimensional model for a tokamak disruption is developed to evaluate the avalanche multiplication of a runaway primary seed during the current quench phase of a fast disruptive event. Analytical expressions for the plateau runaway current, the energy of the runaway beam, and the runaway...
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| Veröffentlicht in: | Physics of plasmas 2015-08, Vol.22 (8) |
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| container_title | Physics of plasmas |
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| creator | Martín-Solís, J. R. Loarte, A. Lehnen, M. |
| description | A simple zero dimensional model for a tokamak disruption is developed to evaluate the avalanche multiplication of a runaway primary seed during the current quench phase of a fast disruptive event. Analytical expressions for the plateau runaway current, the energy of the runaway beam, and the runaway energy distribution function are obtained allowing the identification of the parameters dominating the formation of the runaway current during disruptions. The effect of the electromagnetic coupling to the vessel and the penetration of the external magnetic energy during the disruption current quench as well as of the collisional dissipation of the runaway current at high densities are investigated. Current profile shape effects during the formation of the runaway beam are also addressed by means of an upgraded one-dimensional model. |
| doi_str_mv | 10.1063/1.4927773 |
| format | Article |
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R. ; Loarte, A. ; Lehnen, M.</creator><creatorcontrib>Martín-Solís, J. R. ; Loarte, A. ; Lehnen, M.</creatorcontrib><description>A simple zero dimensional model for a tokamak disruption is developed to evaluate the avalanche multiplication of a runaway primary seed during the current quench phase of a fast disruptive event. Analytical expressions for the plateau runaway current, the energy of the runaway beam, and the runaway energy distribution function are obtained allowing the identification of the parameters dominating the formation of the runaway current during disruptions. The effect of the electromagnetic coupling to the vessel and the penetration of the external magnetic energy during the disruption current quench as well as of the collisional dissipation of the runaway current at high densities are investigated. Current profile shape effects during the formation of the runaway beam are also addressed by means of an upgraded one-dimensional model.</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/1.4927773</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>ANALYTIC FUNCTIONS ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; COUPLING ; CURRENTS ; Disruption ; Distribution functions ; Electromagnetic coupling ; Electron avalanche ; ELECTRON BEAMS ; Energy distribution ; ENERGY SPECTRA ; One dimensional models ; ONE-DIMENSIONAL CALCULATIONS ; Parameter identification ; Plasma physics ; RUNAWAY ELECTRONS ; Shape effects ; TOKAMAK DEVICES ; TOWNSEND DISCHARGE</subject><ispartof>Physics of plasmas, 2015-08, Vol.22 (8)</ispartof><rights>2015 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c351t-e3ca25404567803d23595e669975c1ff99d3155450e63b8d539adfc2c2e98903</citedby><cites>FETCH-LOGICAL-c351t-e3ca25404567803d23595e669975c1ff99d3155450e63b8d539adfc2c2e98903</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27923,27924</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22490055$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Martín-Solís, J. 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Current profile shape effects during the formation of the runaway beam are also addressed by means of an upgraded one-dimensional model.</description><subject>ANALYTIC FUNCTIONS</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>COUPLING</subject><subject>CURRENTS</subject><subject>Disruption</subject><subject>Distribution functions</subject><subject>Electromagnetic coupling</subject><subject>Electron avalanche</subject><subject>ELECTRON BEAMS</subject><subject>Energy distribution</subject><subject>ENERGY SPECTRA</subject><subject>One dimensional models</subject><subject>ONE-DIMENSIONAL CALCULATIONS</subject><subject>Parameter identification</subject><subject>Plasma physics</subject><subject>RUNAWAY ELECTRONS</subject><subject>Shape effects</subject><subject>TOKAMAK DEVICES</subject><subject>TOWNSEND DISCHARGE</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNpFkEtLAzEYRYMoWKsL_0HAlYupX96TpRRfWOimC3chZjLt9JHUJKP039uhgqt7F4fD5SJ0S2BCQLIHMuGaKqXYGRoRqHWlpOLnQ1dQSck_LtFVzmsA4FLUI_Q-D7isPLbfdmuDO7alDz7Z0sWAY4tTH-yPPWC_9a6kGDJu-tSFJS5xY3d2g5sup34_4PkaXbR2m_3NX47R4vlpMX2tZvOXt-njrHJMkFJ55iwVHLiQqgbWUCa08FJqrYQjbat1w4gQXICX7LNuBNO2aR111OtaAxuju5M25tKZ7Lri3crFEI4LDaVcAwjxT-1T_Op9LmYd-xSOuwwllBMgFAbX_YlyKeacfGv2qdvZdDAEzHCoIebvUPYLB8dmNg</recordid><startdate>20150801</startdate><enddate>20150801</enddate><creator>Martín-Solís, J. 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| ispartof | Physics of plasmas, 2015-08, Vol.22 (8) |
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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | ANALYTIC FUNCTIONS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COUPLING CURRENTS Disruption Distribution functions Electromagnetic coupling Electron avalanche ELECTRON BEAMS Energy distribution ENERGY SPECTRA One dimensional models ONE-DIMENSIONAL CALCULATIONS Parameter identification Plasma physics RUNAWAY ELECTRONS Shape effects TOKAMAK DEVICES TOWNSEND DISCHARGE |
| title | On the avalanche generation of runaway electrons during tokamak disruptions |
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