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Titolo:
THE TUNGSTEN DIVERTOR EXPERIMENT AT ASDEX UPGRADE
Autore:
NEU R; ASMUSSEN K; KRIEGER K; THOMA A; BOSCH HS; DESCHKA S; DUX R; ENGELHARDT W; GARCIAROSALES C; GRUBER O; HERRMANN A; KALLENBACH A; KAUFMANN M; MERTENS V; RYTER F; ROHDE V; ROTH J; SOKOLL M; STABLER A; SUTTROP W; WEINLICH M; ZOHM H; ALEXANDER M; BECKER G; BEHLER K; BEHRINGER K; BEHRISCH R; BERGMANN A; BESSENRODTWEBERPALS M; BRAMBILLA M; BRINKSCHULTE H; BUCHL K; CARLSON A; CHODURA R; COSTER D; CUPIDO L; DEBLANK HJ; HEMPEL SD; DRUBE R; FAHRBACH HU; FEIST JH; FENEBERG W; FIEDLER S; FRANZEN P; FUCHS JC; FUSSMANN G; GAFERT J; GEHRE O; GERNHARDT J; HAAS G; HERPPICH G; HERRMANN W; HIRSCH S; HOEK M; HOENEN F; HOFMEISTER F; HOHENOCKER H; JACOBI D; JUNKER W; KARDAUN O; KASS T; KOLLOTZEK H; KOPPENDORFER W; KURZAN B; LACKNER K; LANG PT; LANG RS; LAUX M; LENGYEL LL; LEUTERER F; MANSO ME; MARASCHEK M; MAST KF; MCCARTHY P; MEISEL D; MERKEL R; MULLER HW; MUNICH M; MURMANN H; NAPIONTEK B; NEU G; NEUHAUSER J; NIETHAMMER M; NOTERDAEME JM; PASCH E; PAUTASSO G; PEETERS AG; PEREVERZEV G; PITCHER CS; POSCHENRIEDER W; RAUPP G; REINMULLER K; RIEDL R; ROHR H; SALZMANN H; SANDMANN W; SCHILLING HB; SCHLOGL D; SCHNEIDER H; SCHNEIDER R; SCHNEIDER W; SCHRAMM G; SCHWEINZER J; SCOTT BD; SEIDEL U; SERRA F; SPETH E; SILVA A; STEUER KH; STOBER J; STREIBL B; TREUTTERER W; TROPPMANN M; TSOIS N; ULRICH M; VARELA P; VERBEEK H; VERPLANCKE P; VOLLMER O; WEDLER H; WENZEL U; WESNER F; WOLF R; WUNDERLICH R; ZASCHE D; ZEHETBAUER T; ZEHRFELD HP;
Indirizzi:
MAX PLANCK INST PLASMA PHYS,IPP,EURATOM,BOLTZMANNSTR 2 D-8046 GARCHING GERMANY MAX PLANCK INST PLASMA PHYS,IPP,EURATOM BERLIN GERMANY CTR ESTUDIOS & INVEST TECN GUIPUZCOA SAN SEBASTIAN SPAIN CTR FUSAO NUCL LISBON PORTUGAL UNIV STUTTGART,INST PLASMAFORSCH D-7000 STUTTGART GERMANY FORSCHUNGSZENTRUM JULICH JULICH GERMANY NATL UNIV IRELAND UNIV COLL CORK CORK IRELAND INST NUCL TECHNOL & RADIAT PROTECT ATHENS GREECE
Titolo Testata:
Plasma physics and controlled fusion
fascicolo: 12A, volume: 38, anno: 1996,
pagine: 165 - 179
SICI:
0741-3335(1996)38:12A<165:TTDEAA>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
EROSION; TOKAMAK;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
R. Neu et al., "THE TUNGSTEN DIVERTOR EXPERIMENT AT ASDEX UPGRADE", Plasma physics and controlled fusion, 38(12A), 1996, pp. 165-179

Abstract

Tungsten-coated tiles, manufactured by plasma spray on graphite, weremounted in the divertor of the ASDEX Upgrade tokamak and cover almost90% of the surface facing the plasma in the strike zone. Over 600 plasma discharges have been performed to date, around 300 of which were auxiliary heated with heating powers up to 10 MW. The production of tungsten in the divertor was monitored by a W I line at 400.8 nm. In the plasma centre an array of spectral lines at 5 nm emitted by ionizationstates around W XXX was measured. From the intensity of these lines the W content was derived. Under normal discharge conditions W-concentrations around 10(-5) or even lower were found. The influence on the main plasma parameters was found to be negligible. The maximum concentrations observed decrease with increasing heating power. In several low power discharges accumulation of tungsten occurred and the temperatureprofile was Battened. The concentrations of the intrinsic impurities carbon and oxygen were comparable to the discharges with the graphite divertor. Furthermore, the density and the beta limits remained unchanged and no negative influence on the energy confinement or on the H-mode threshold was found. Discharges with neon radiative cooling showed the same behaviour as in the graphite divertor case.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 07:41:46