Calculation and Correction of Field Inhomogeneities of a Betatron
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概要
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The most important point to avoid the bumps or field inhomogeneities of a betatron is a precise air gap length between a pole and a yoke. Where the air gap is longer, the phase lag of magnetic flux on the electronic orbit increases. However, the basic component of the bumps is caused by both flux distribution in the yoke and difference in length of the magnetic path in the yoke. Each magnet component has its own figure of bumps. Measured bumps are the sum of the bumps of the upper pole, lower pole and the yoke. The bumps can be regulated by turning the poles within a certain limit. Bumps of a yoke having two legs have some amount of the 2nd harmonic component. This 2nd harmonic component can be compensated with adjustable cores inserted in the yoke by pushing them toward the poles.
- 社団法人応用物理学会の論文
- 1968-02-05