skip to main content

SciTech ConnectSciTech Connect

Title: High performance discharges in the Lithium Tokamak eXperiment with liquid lithium walls

The first-ever successful operation of a tokamak with a large area (40% of the total plasma surface area) liquid lithium wall has been achieved in the Lithium Tokamak eXperiment (LTX). These results were obtained with a new, electron beam-based lithium evaporation system, which can deposit a lithium coating on the limiting wall of LTX in a five-minute period. Preliminary analyses of diamagnetic and other data for discharges operated with a liquid lithium wall indicate that confinement times increased by 10× compared to discharges with helium-dispersed solid lithium coatings. Ohmic energy confinement times with fresh lithium walls, solid and liquid, exceed several relevant empirical scaling expressions. Spectroscopic analysis of the discharges indicates that oxygen levels in the discharges limited on liquid lithium walls were significantly reduced compared to discharges limited on solid lithium walls. Tokamak operations with a full liquid lithium wall (85% of the total plasma surface area) have recently started.
Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1] ; ; ;  [2] ; ;  [3] ;  [4] ;  [5] more »; « less
  1. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
  2. Princeton University, Princeton, New Jersey 08544 (United States)
  3. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
  4. University of California at Los Angeles, Los Angeles, California 90095 (United States)
  5. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
22410392
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRON BEAMS; EVAPORATION; FIRST WALL; HELIUM; LITHIUM; OXYGEN; PLASMA; SURFACE AREA; SURFACE COATING; TOKAMAK DEVICES