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Title: The Role of Lithium Conditioning in Achieving High Performance, Long Pulse H-mode Discharges in the NSTX and EAST Devices

In this paper, the role of lithium wall conditioning on the achievement of high performance, long pulse discharges in the National Spherical Torus Experiment (NSTX) and the Experimental Advanced Superconducting Tokamak (EAST) is documented. Common observations include recycling reduction and elimination of ELMs. In NSTX, lithium conditioning typically resulted in ELM-free operation with impurity accumulation, which was ameliorated e.g. with pulsed 3D fields to trigger controlled ELMs. Active lithium conditioning in EAST discharges has overcome this problem, producing an ELM-free Hmode with controlled density and impurities.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [1]
  1. PPPL
  2. IPPCAS
Publication Date:
OSTI Identifier:
1182666
Report Number(s):
PPPL-5077
DOE Contract Number:
DE-AC02-09CH11466
Resource Type:
Conference
Resource Relation:
Journal Name: 25th IAEA Fusion Energy Conference Proceedings [EX/P6-54] on IAEA Physics website; Conference: 25th IAEA Fusion Energy Conference, St. Petersburg, Russia, 13-18 October 2014.
Publisher:
IAEA
Research Org:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Org:
USDOE
Contributing Orgs:
1 Princeton Plasma Physics Laboratory, Receiving 3, Route 1 North, Princeton, NJ 08543 USA 2 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 China 3 General Atomics, PO Box 85608, San Diego, CA 92186, USA 4 Lawrence Livermore National Laboratory, 7000 East Ave, P.O. Box 808, Livermore CA 94551, USA
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY Divertors; Edge-localized Mode (ELM); Lithium/ Scrape-off Layer (SOL); Sperical Tokamak; Tokamaks, NSTX