OPTIMAL DESIGN OF THE MAGNET PROFILE FOR A COMPACT QUADRUPOLE ON STORAGE RING AT THE CANADIAN SYNCHROTRON FACILITY
Islam, MD Armin 1993-
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This thesis concerns design of a quadrupole magnet for the next generation Canadian Light Source storage ring. The quality of the design is measured by the so-called width of Good Field Region (GFR) in the magnetic field generated by the magnet in a particular configuration, e.g. quadrupole configuration. The width of GFR is defined upon the multipole error in magnetic field strength, in particular the error being less than 0.1%. The design requirement for the magnet was to have the GFR at least ±1.0 cm. It is noted that the existing or preliminary design of the magnet (Dallin, 2018) has only achieved ±0.8 cm GFR. This thesis was motivated to design the magnet of the quadrupole so that the foregoing design requirement can be met. The secondary motivation of this thesis was to improve the design of the magnet so that the bad edge effect of the magnet can be reduced. Increase of the width of GFR may be achieved by reduction of the multipole errors. The shape of the magnet pole is a major factor to cause these errors. An optimal design of the shape of the magnet pole was attempted in this thesis. Specifically, a simulation-based trial-and-error procedure was taken for the optimal design partly due to some difficulty to represent the shape of the magnet pole analytically. This procedure was acceptable as a pilot try for a more sophisticated optimal design that may follow in the future. Reduction of the bad edge effect with the magnet may be reduced by careful modification of the shape of the side or edge of the magnet. The result of this thesis is very encouraging; specifically, the width of ±1.1 cm of GFR has been achieved within the field region. The result thus gives a proof of the proposed design approach with the procedure. Further, the bad edge effect was also reduced.
DegreeMaster of Science (M.Sc.)
SupervisorZhang, W.J.; Boland, Mark
CommitteeChen, Daniel; Gupta, Madan M.; Meda, Venkatesh
Copyright DateDecember 2019
Quadrupole, Canadian Light Source, Multipole errors, magnet pole, Good Field Region.