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Title: Use of an m=2, n=1 static error field correction coil, {open_quotes}The C-coil,{close_quotes} on DIII-D to avoid disruptive locked modes

Use of an m=2, n=1 static error field correction coil, {open_quotes}The C-coil,{close_quotes} on DIII-D to avoid disruptive locked modes Minimizing resonant, static n = 1 error field with a phase steerable correction coil the C-coil, in DIII-D allows avoidance of disruptive locked modes. Alternatiely, increasing n = 1 error field in rapidly rotating plasmas can induce magnetic braking of rotation without locking for the study of the role of rotation on stability. Small toroidally asymmetric m = 2, n = 1 static field errors are of concern for the design of next-generation devices and for the operation of existing tokamaks. In low density ohmic plasmas for example, the torque of a small resonant error at the q = 2 surface can overcome the plasma inertial and/or viscous forces, stop the rotation and produce a large island which can cause disruption.
Authors: ;
Publication Date:
OSTI Identifier:135140
Report Number(s):GA-A--22033; CONF-9506282--2
ON: DE96002700; TRN: 96:001264
DOE Contract Number:AC03-89ER51114
Resource Type:Conference
Data Type:
Resource Relation:Conference: 22. European conference on controlled fusion and plasmas physics, Bournemouth (United Kingdom), 3-7 Jun 1995; Other Information: PBD: May 1995
Research Org:General Atomics, San Diego, CA (United States)
Sponsoring Org:USDOE, Washington, DC (United States)
Country of Publication:United States
Language:English
Subject: 70 PLASMA PHYSICS AND FUSION; MAGNET COILS; CORRECTIONS; DOUBLET-3 DEVICE; PLASMA DISRUPTION; ERRORS; ROTATING PLASMA; MAGNETIC FIELDS; MODE LOCKING