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Title: Simulating the ITER Plasma Startup Scenario in the DIII-D Tokamak

Conference ·

DIII-D experiments have investigated ITER startup scenarios, including an initial phase where the plasma was limited on low field side (LFS) poloidal bumper limiters. Both the original ITER 'small-bore' (constant q{sub 95}) startup and a 'large-bore' lower internal inductance (l{sub i}) startup have been simulated. In addition, l{sub i} feedback control has been tested with the goal of producing discharges at the ITER design value, l{sub i}(3) = 0.85. These discharges have been simulated using the Corsica free boundary equilibrium code. High performance hybrid scenario discharges ({beta}{sub N} = 2.8, H{sub 98,y2} = 1.4) and ITER H-mode baseline discharges ({beta}{sub N} > 1.6, H{sub 98,y2} = 1-1.2) have been obtained experimentally in an ITER similar shape after the ITER-relevant startup.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
945672
Report Number(s):
LLNL-CONF-407829; TRN: US0901055
Resource Relation:
Journal Volume: 49; Journal Issue: 11; Conference: Presented at: 22nd IAEA-FEC, Geneva, Switzerland, Oct 13 - Oct 18, 2008
Country of Publication:
United States
Language:
English

References (13)

ITER startup studies in the DIII-D tokamak journal November 2008
Chapter 8: Plasma operation and control journal June 2007
Low voltage Ohmic and electron cyclotron heating assisted startup in DIII-D journal November 1991
Second harmonic electron cyclotron pre-ionization in the DIII-D tokamak journal March 2007
Electron cyclotron resonance heating and current drive in toroidal fusion plasmas journal December 1994
Electron cyclotron heating assisted startup in JT-60U journal July 2005
First experiments of plasma start-up assisted by ECRH on Tore Supra journal April 2008
Ohmic flux consumption during initial operation of the NSTX spherical torus journal September 2001
Volt-second analysis and consumption in Doublet III plasmas journal October 1982
Real time equilibrium reconstruction for tokamak discharge control journal July 1998
Development of Steady-State Advanced Tokamak Research in the DIII-D Tokamak journal October 2005
ITER shape controller and transport simulations journal April 2008
TSC simulation of Ohmic discharges in TFTR journal March 1993

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