000199372 001__ 199372
000199372 005__ 20181007231311.0
000199372 0247_ $$2doi$$a10.1088/0029-5515/54/11/114006
000199372 02470 $$2ISI$$a000344964800007
000199372 037__ $$aCONF
000199372 245__ $$aH-mode access during plasma current ramp-up in TCV
000199372 269__ $$a2014
000199372 260__ $$aBristol$$bIop Publishing Ltd$$c2014
000199372 300__ $$a8
000199372 336__ $$aConference Papers
000199372 520__ $$aA recent TCV experiment has investigated the dependence of the L–H transition threshold power on the plasma current ramp-rate and the X-point height above the divertor target, which both have previously been seen to affect the transition behaviour. Systematic scans in ohmically heated plasmas do not show any dependence on the plasma current ramp-up rate. In contrast, the threshold power is found to increase by a factor of two while the X-point is moved from about 10 cm up to 35 cm above the vessel floor. However, further increase, up to 60 cm, does not lead to any further increase of the required power. The Fundamenski et al model is tested against the measurements. Estimates of the Wagner number (Wa) at L–H transitions are generally close to unity, in accordance with the model. In contrast, estimates of Wa before the L–H transition, i.e. in L-mode, do not show the expected evolution towards unity.
000199372 6531_ $$aTCV tokamak
000199372 6531_ $$aL-H transition
000199372 6531_ $$aH-mode
000199372 6531_ $$aX-point height
000199372 700__ $$aMartin, Y.
000199372 700__ $$aLabit, B.
000199372 700__ $$aReimerdes, H.
000199372 700__ $$aBehn, R.
000199372 700__ $$aFurno, I.
000199372 710__ $$aTCV team
000199372 7112_ $$a14th International Workshop on H-mode Physics and Transport Barriers$$cKyushu University, Fukuoka, Japan$$d2-4 October 2013
000199372 773__ $$j54$$q114006$$tNuclear Fusion
000199372 8564_ $$uhttps://crpplocal.epfl.ch/pinboard/papers/137605103.pdf$$zURL
000199372 909C0 $$pCRPP
000199372 909C0 $$0252028$$pSPC
000199372 909CO $$ooai:infoscience.tind.io:199372$$pconf$$pSB$$qGLOBAL_SET
000199372 917Z8 $$x105777
000199372 937__ $$aEPFL-CONF-199372
000199372 970__ $$a1376051/CRPP
000199372 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000199372 980__ $$aCONF