DIII-D and ITER rapid shutdown with radially uniform deuterium delivery

Izzo, V.A.; Parks, P.B.; Lao, L. L.

doi:10.1088/0741-3335/51/10/105004

Cited by 11 publications

(8 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The discharges with generation of runaway current were excluded here. There are different definitions used in different machines about how to extrapolate the I p decay duration, for example, 100%-40% [3], 90%-10% [9,10], 80%-20% [11,12]. The times where the plasma I p decays to 80% and 20% of the current before disruption are denoted t 80 and t 20 .…”

Section: Experimental Setup and Methodsmentioning

confidence: 99%

Characterization of plasma current quench during disruptions at HL-2A

Zhu¹,

Zhang²,

Dong³

2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

The most essential assumptions of physics for the evaluation of electromagnetic forces on the plasma-facing components due to a disruption-induced eddy current are characteristics of plasma current quenches including the current quench rate or its waveforms. The characteristics of plasma current quenches at HL-2A have been analyzed during spontaneous disruptions. Both linear decay and exponential decay are found in the disruptions with the fastest current quenches. However, there are two stages of current quench in the slow current quench case. The first stage with an exponential decay and the second stage followed by a rapid linear decay. The faster current quench rate corresponds to the faster movement of plasma displacement. The parameter regimes on the current quench time and the current quench rates have been obtained from disruption statistics at HL-2A. There exists no remarkable difference for distributions obtained between the limiter and the divertor configuration. This data from HL-2A provides basic data of the derivation of design criteria for a large-sized machine during the current decay phase of the disruptions.

show abstract

Section: Experimental Setup and Methodsmentioning

confidence: 99%

Characterization of plasma current quench during disruptions at HL-2A

Zhu¹,

Zhang²,

Dong³

2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Recent work includes M3D simulations which were mainly focused on the vertical displacement of the plasma and the halo current 20 and NIMROD simulations of MGI-triggered disruptions. [21][22][23][24][25] The present paper describes simulations of an MGItriggered disruption in JET with another 3D non-linear MHD code, JOREK. 26 So far, JOREK has been applied mainly to edge localised mode modeling.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional non-linear magnetohydrodynamic modeling of massive gas injection triggered disruptions in JET

et al. 2015

View full text Add to dashboard Cite

Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication Citation for published version (APA):Fil, A., Nardon, E., Hoelzl, M., Huijsmans, G. T. A., Orain, F., Becoulet, M., ... . Threedimensional non-linear magnetohydrodynamic modeling of massive gas injection triggered disruptions in JET. Physics of Plasmas, 22, 062509-1/18. DOI: 10.1063/1.4922846 General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Three-dimensional non-linear magnetohydrodynamic modeling of massive gas injection triggered disruptions in JET JOREK 3D non-linear MHD simulations of a D 2 Massive Gas Injection (MGI) triggered disruption in JET are presented and compared in detail to experimental data. The MGI creates an overdensity that rapidly expands in the direction parallel to the magnetic field. It also causes the growth of magnetic islands (m=n ¼ 2=1 and 3/2 mainly) and seeds the 1/1 internal kink mode. O-points of all island chains (including 1/1) are located in front of the MGI, consistently with experimental observations. A burst of MHD activity and a peak in plasma current take place at the same time as in the experiment. However, the magnitude of these two effects is much smaller than in the experiment. The simulated radiation is also much below the experimental level. As a consequence, the thermal quench is not fully reproduced. Directions for progress are identified. Radiation from impurities is a good candidate. V C 2015 AIP Publishing LLC.[http://dx

show abstract

“…Furthermore, these codes have been developed to treat impurity effects. Izzo et al [14,15] have developed an extension of the 3D NIMROD code called NIMRAD to model massive injection of impurity gas, which is used to quench tokamak disruptions. 0D and 1D models have been developed by You [16] to model refueling physics in tokamak-like devices.…”

Section: Background and Motivationmentioning

confidence: 99%