Return To: Session EXP2 - Confinement & Transport (Wednesday, 21
Prev Page: (EXP2/11) Comparison of L-H Transition Measurements with Physics
Next Page: (EXP2/13) Investigation of Dimensionless Scaling Laws and Non

(EXP2/12) Highly Radiative Plasmas for Local Transport Studies and Power and Particle Handling in Reactor Regimes

   
K. W. Hill , M. G. Bell , R. Budny , C. E. Bush ¹, D. R. Ernst , G. W. Hammett , D. Mikkelsen , H. Park , A. T. Ramsey , S. Sabbagh ², S. D. Scott , E. J. Synakowski , G. Taylor , and M. C. Zarnstorff 
 
Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, USA
¹ Oak Ridge National Laboratory, Oak Ridge, TN
² Columbia University, New York, NY

Abstract
To study the applicability of artificially enhanced impurity radiation for mitigation of the plasma-limiter  interaction in reactor regimes, krypton and xenon gases were injected into TFTR  supershots and high-li plasmas. At neutral beam injection  (NBI) powers $\rm P_B \leq 30 MW$, carbon influxes (blooms) were suppressed, leading to improved energy confinement  and neutron production in both D and DT plasmas, and the highest DT fusion energy production (7.6 MJ) in a TFTR pulse. Comparisons of the measured radiated power profiles with predictions of the MIST impurity transport code have guided studies of highly-radiative plasmas in ITER . The response of the electron and ion temperatures to greatly increased radiative losses from the electrons was used to study thermal transport mechanisms.

     

Read the full paper in PDF format.