ELM induced tungsten melting and its impact on tokamak operation

Coenen, J.W.; Arnoux, G.; Bazylev, B.; Matthews, G. F.; Jachmich, S.; Balboa, I.; Clever, M.; Dejarnac, Renaud; Coffey, I.; Corre, Y.; Devaux, S.; Frassinetti, L.; Gauthier, E.; Horáček, Jan; Knaup, M.; Komm, Michael; Krieger, K.; Marsen, S.; Meigs, A.; Mertens, Ph.; Pitts, R.A.; Puetterich, T.; Rack, M.; Stamp, M.; Sergienko, G.; Tamain, P.; Thompson, V.

Počet záznamů: 1

ELM induced tungsten melting and its impact on tokamak operation

1.

SYSNO ASEP	0433538
Druh ASEP	A - Abstrakt
Zařazení RIV	Není vybrán druh dokumentu
Název	ELM induced tungsten melting and its impact on tokamak operation
Tvůrce(i)	Coenen, J.W. (DE) Arnoux, G. (GB) Bazylev, B. (DE) Matthews, G. F. (GB) Jachmich, S. (DE) Balboa, I. (GB) Clever, M. (DE) Dejarnac, Renaud (UFP-V)_{RID, ORCID} Coffey, I. (GB) Corre, Y. (FR) Devaux, S. (GB) Frassinetti, L. (SE) Gauthier, E. (FR) Horáček, Jan (UFP-V)_{RID, ORCID} Knaup, M. (DE) Komm, Michael (UFP-V)_{RID, ORCID} Krieger, K. (DE) Marsen, S. (DE) Meigs, A. (GB) Mertens, Ph. (DE) Pitts, R.A. (FR) Puetterich, T. (DE) Rack, M. (DE) Stamp, M. (GB) Sergienko, G. (GB) Tamain, P. (GB) Thompson, V. (GB)
Celkový počet autorů	28
Zdroj.dok.	21st International Conference on Plasma Surface Interactions 2014. - Toki City : National Institute for Fusion Science, 2014 S. 1-93
Poč.str.	93 s.
Forma vydání	Tištěná - P
Akce	International Conference on Plasma Surface Interactions 2014/21./
Datum konání	26.05.2014-30.05.2014
Místo konání	Kanazawa
Země	JP - Japonsko
Typ akce	WRD
Jazyk dok.	eng - angličtina
Země vyd.	JP - Japonsko
Klíč. slova	Heat loads ; misalignment ; JET ; tungsten ; melting
Vědní obor RIV	BL - Fyzika plazmatu a výboje v plynech
Institucionální podpora	UFP-V - RVO:61389021
Anotace	In JET-ILW dedicated melt exposures were performed using a sequence of H-Mode JET pulses with regular type I ELMs.In order to assess the risk of starting ITER operations with a full W divertor,one of the task was to measure the consequences of W transients melting due to ELMs.By moving the outer strike point (OSP) onto a dedicated leading edge the base temperature was raised within 1s to allow transient ELM-driven melting during the subsequent 0.5 s. Almost 6mm3 of W was moved by 150 ELMs within 5 subsequent discharges. Significant material losses in terms of ejections into the plasma were not observed. There is indirect evidence that some small droplets were ejected.The impact on the main plasma parameters is minor and no disruptions occurred.The W-melt gradually moved along the lamella edge towards the high field side, driven by jxB forces.The evaporation rate determined is 100 times less than expected from steady state melting and thus only consistent with transient melting
Pracoviště	Ústav fyziky plazmatu
Kontakt	Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
Rok sběru	2015

Počet záznamů: 1