By Topic

Beam-Based Design of a Correction Coil for the Stray Field of a Pulse Septum Magnet

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Takayuki Mitsui ; Lab. of Adv. Sci. & Technol. for Ind., Hyogo Univ., Hyogo ; Takahiro Matsubara ; Yoshinori Hisaoka ; Yoshihiko Shoji

A direct-drive pulse septum magnet has been in operation for injection of a 1 GeV electron beam at synchrotron light source ring NewSUBARU. Its nominal field is 0.35 T with waveform of 0.92 ms half-sine. Its stray field was measured using the stored electron beam and found to be different from the original design, probably because of an alignment error of the septum current sheet. In the data analysis, the stray field was separated in two components. One component had the expected normal field symmetry, and the other had an unexpected opposite field symmetry. As reported here, a correction coil system for the stray field was designed on the basis of measurements using the stored electron beam. The magnetic field produced by the correction coil was calculated with the field calculation code OPERA-3d. With this correction system, the stray field with the opposite symmetry was reduced from 213 muTm (Tesla meter) maximum to 8 muTm maximum.

Published in:

IEEE Transactions on Applied Superconductivity  (Volume:18 ,  Issue: 2 )