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Author Anderson, P.M. ♦ Hong, R.-M.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2009
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations
Subject Keyword Niobium ♦ Programmable control ♦ Tokamaks ♦ Particle beams ♦ Plasmas ♦ Heating ♦ Temperature control ♦ Counting circuits ♦ Physics ♦ Valves ♦ off axis ♦ Neutral beam ♦ current drive
Abstract The DIII-D tokamak has 4 neutral beams (NB) for plasma heating, rotation control and current drive. These NBs are all horizontal injection at 19° offset from radial. Three NBs inject in the co-current direction and one NB injects in the counter current direction. The physics program requires two of the co-current NBs to be converted to allow injection at angles between 0° and 16.5° from horizontal by 2013 in order to investigate enhanced off-axis current drive. Each NB will be fully disassembled and it is planned during this task to upgrade thermal performance of internal components to allow for increased pulse length. The positioning system will incorporate 3 hydraulic cylinders to elevate the front and rear of the 35 ton NB. Hydraulic cylinder displacements will be supplied by hydraulic spool valves controlled by a programmable logic controller (PLC). The paper will present the following information for this mechanical positioning system: • Design requirements • Linkage arrangement • Loads evaluation including vacuum and seismic loads • Hydraulic circuit including instrumentation
Description Author affiliation: General Atomics, P.O. Box 85608, San Diego, California 92186-5608 USA (Anderson, P.M.; Hong, R.-M.)
ISBN 9781424426355
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2009-06-01
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 4.75 MB
Page Count 4
Starting Page 1
Ending Page 4

Source: IEEE Xplore Digital Library