Solenoid-Less Plasma Start-Up in NSTX Using Transient CHI
Abstract
Experiments in NSTX have now unambiguously demonstrated the coupling of toroidal plasmas produced by the method of transient Coaxial Helicity Injection (CHI) to inductive sustainment and ramp-up of the toroidal current. The coupled discharges have ramped up to 700 kA and transitioned into H-mode with low inductance typical of the type of discharges needed for long-pulse operation, demonstrating the compatibility of the CHI startup method to conventional inductive operation used since the start of tokamak research. The method was first demonstrated on the smaller concept exploration device HIT-H at the University of Washington. These new results that were obtained on a machine built with mainly conventional components and on a size scale closer to a Component Test Facility, demonstrate that CHI is a viable solenoid-free plasma startup method for future STs and Tokamaks.
- Authors:
-
- University of Washington, Seattle
- ORNL
- Princeton Plasma Physics Laboratory (PPPL)
- Nova Photonics, Princeton, NJ
- Himeji Institute of Technology, Japan
- Columbia University
- Lawrence Livermore National Laboratory (LLNL)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1018304
- DOE Contract Number:
- DE-AC05-00OR22725
- Resource Type:
- Conference
- Resource Relation:
- Conference: 18th American-Nuclear Society Topical Meeting on the Technology of Fusion Energy, San Francisco, CA, USA, 20080928, 20081002
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPATIBILITY; EXPLORATION; HELICITY; INDUCTANCE; PLASMA; START-UP; THERMONUCLEAR REACTORS; TRANSIENTS; COAXIAL HELICITY INJECTION; SPHERICAL TORUS EXPERIMENT; TOKAMAK
Citation Formats
Raman, R, Nelson, Brad E, Mueller, D, Jarboe, T, Bell, M, Menard, J, Ono, M, Be, R, Gates, D, LaBlanc, B P, Maingi, Rajesh, Maqueda, R J, Nagata, M, Roquemore, L, Sabbagh, S A, and Soukhanovskii, V. Solenoid-Less Plasma Start-Up in NSTX Using Transient CHI. United States: N. p., 2009.
Web.
Raman, R, Nelson, Brad E, Mueller, D, Jarboe, T, Bell, M, Menard, J, Ono, M, Be, R, Gates, D, LaBlanc, B P, Maingi, Rajesh, Maqueda, R J, Nagata, M, Roquemore, L, Sabbagh, S A, & Soukhanovskii, V. Solenoid-Less Plasma Start-Up in NSTX Using Transient CHI. United States.
Raman, R, Nelson, Brad E, Mueller, D, Jarboe, T, Bell, M, Menard, J, Ono, M, Be, R, Gates, D, LaBlanc, B P, Maingi, Rajesh, Maqueda, R J, Nagata, M, Roquemore, L, Sabbagh, S A, and Soukhanovskii, V. 2009.
"Solenoid-Less Plasma Start-Up in NSTX Using Transient CHI". United States.
@article{osti_1018304,
title = {Solenoid-Less Plasma Start-Up in NSTX Using Transient CHI},
author = {Raman, R and Nelson, Brad E and Mueller, D and Jarboe, T and Bell, M and Menard, J and Ono, M and Be, R and Gates, D and LaBlanc, B P and Maingi, Rajesh and Maqueda, R J and Nagata, M and Roquemore, L and Sabbagh, S A and Soukhanovskii, V},
abstractNote = {Experiments in NSTX have now unambiguously demonstrated the coupling of toroidal plasmas produced by the method of transient Coaxial Helicity Injection (CHI) to inductive sustainment and ramp-up of the toroidal current. The coupled discharges have ramped up to 700 kA and transitioned into H-mode with low inductance typical of the type of discharges needed for long-pulse operation, demonstrating the compatibility of the CHI startup method to conventional inductive operation used since the start of tokamak research. The method was first demonstrated on the smaller concept exploration device HIT-H at the University of Washington. These new results that were obtained on a machine built with mainly conventional components and on a size scale closer to a Component Test Facility, demonstrate that CHI is a viable solenoid-free plasma startup method for future STs and Tokamaks.},
doi = {},
url = {https://www.osti.gov/biblio/1018304},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 01 00:00:00 EDT 2009},
month = {Wed Jul 01 00:00:00 EDT 2009}
}