Tokamak:	TFTR
Pulse Number:	105290
Contact: 	D. Mikkelsen
Institution:	PPPL, Princeton University
Date of Shot:	April 1, 1997
Analysis Code:	TRANSP
Run number:	105290a03
Analysis Date:	August 1997
Assumptions: 	Vphi measured by CXRS, Te by ECE grating 
		polychrometer, Ne by 10-chord interferometer. Vphi 
		smoothed 100-120 ms (smooths through sawteeth).  
		Te and Ne have short temporal smoothing, about 15 
		ms, and do not smooth over sawteeth.  Zeff assumed 
		flat (Zeff is close to unity).  Because this is a rather 
		low temperature L-mode shot at moderate density, 
		ion-electron power coupling would be strong even 
		for rather small temperature differentials (Ti-Te).  
		Thus, experimental uncertainties in the measured Ti-
		Te corresponds to large uncertainties in Qei and so 
		the kinetic measurements do not resolve very well 
		the ion and electron power balances, i.e. the 1-fluid 
		diffusivity is well determined but not chie and chii.  
		Ti was measured by CXRS during NBI, but the kinetic 
		total stored energy exceeds the magnetic measurement
		and the integrated Qie exceeds the ion beam heating
		power for r >~0.7a. The TRANSP analysis used here
		assumed Ti=Te during the period of beam injection;
		this is consistent with the magnetically measured
		total stored energy.  The magnetic stored energy
		shows that the global tauE is maximized with all
		co-injection; the minimum tauE is between balanced and
		all counter injection.  This trend is even stronger if
		the kinetic stored energy is used.
Shot desc: 	This is a beam-heated deuterium L-mode discharge 
		at 4.8 Tesla, 2.0 MA beam-torque sequence TOR1.  
		This shot was heated with 1 co-directed source and 5 
		counter-directed sources.  The performance in this 
		shot can be compared with other members of the 
		scan which match either the beam power or the total 
		stored energy, but which have different net beam 
		torque and toroidal rotation speed.  The challenge for 
		proposed transport models is to reproduce the 
		confinement trends with beam directionality; tauE 
		reaches a minimum with counter-dominated 
		injection and increases either as one proceeds to pure 
		counter injection or toward co-dominated injection.    
Publication:	S. Batha et al., REffect of rotation on confinementS,  
		presented at the 24th EPS Conference on Controlled 
		Fusion and Plasma Physics.  To be published in 
		conference proceedings.  Paper is available 
		electronically at: 
		http://w3.pppl.gov/tftr/info/EPS97/eps97-batha-paper.pdf
		Poster material is available on the web at:
		
		http://w3.pppl.gov/tftr/info/EPS97/eps97-batha.pdf
		See also Scott et al., REffects of Flow Shear on L-mode 
		Plasmas Confinement in TFTRS, presented at the 1997 
		TTF meeting. 
			See:  http://www-local.pppl.gov/~sscott/TTF97-Scott.pdf
Other Info: 	Member of sequence TOR1.