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| THP017 |
Magnet Hysteresis Control at LANSCE
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601 |
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- R. C. McCrady, R. Keller
LANL, Los Alamos, New Mexico
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We have investigated the effects of magnet hysteresis in various beamlines at LANSCE (Los Alamos Neutron Science Center) and have developed procedures to control the effects. Particular challenges are presented by sets of magnets with parallel boosting and bucking windings on the same yoke powered by two families of supplies and by magnets whose fields are routinely reversed for different operating modes. The results of the procedures are more rapid recovery from power-off conditions and rapid switching between operating modes, with minimized re-tuning. The latter improvement has been beneficial in controlling a beam instability that has adverse effects on the users’ experiments.
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