Tokamak:	TFTR
Pulse Number:	102257
Contact: 	E. Synakowski
Institution:	PPPL, Princeton University
Date of Shot:	January 13, 1997
Analysis Code:	TRANSP
Run number:	102257a03
Analysis Date:	August 16, 1997
Assumptions: 	Zeff profile determined from carbon density profile 
		measured by CXRS, normalized to a single chord-
		integral VB measurement.  Prior to the start of NBI, 
		Ti profile is calculated assuming chii = 15 x 
		neoclassical, which is the value observed in other 
		expts. During NBI, Ti and Vphi are measured by 
		CXRS.
Shot Desc.: 	Supershot to L-mode perturbation caused by carbon 
		bloom event. The bloom starts at about 3.3 seconds, 
		after only 6.5 MJ of beam energy has been deposited 
		in the plasma over a period of 300 ms of 22.5 MW 
		NBI.  The beam power was programmed to decrease 
		from 22.5 MW to 9.5 MW at 3.4 seconds.  So the 
		interesting phase of this experiment is the period 
		from roughly 3.25 to 3.4 seconds, when the heating 
		power is constant while the edge conditions change 
		due to the bloom.  The magnitude of the bloom in 
		this shot, as measured by the rise in edge density, is 
		about a factor of three smaller than on shot 91472.  
		Correspondingly, during the bloom on this shot (3.3-
		3.4 sec) there is little decrease in ion temperarature 
		in the core (0-10%) and no change in chii within 
		modelling uncertainty.  Thus, proposed transport 
		models should be able to reproduce the strong effect 
		of a bloom on shot 91472 and the very weak effect 
		on shot 102257.
Publication:	This shot is unpublished.  The physics of carbon 
		blooms is described in  Nuclear Fusion 31 (1991) p. 
		1811 by A. T. Ramsey. 
Other Info: