[en] A two-dimensional analytic study has been made of the injection steering magnet No.2, which resides inside the yoke of the TASCC superconducting cyclotron. At high magnetic fields in the cyclotron, it was observed that the steering magnet had insufficient strength to properly inject the beam; saturation of the steering magnet as a result of leakage from the cyclotron yoke was hypothesized as the cause. This hypothesis has been confirmed by this study, and furthermore, the steering magnet has been re-designed to circumvent the above problems. Details of the analytic approach are given along with the results of the analysis of the original and redesigned magnets. (author). 4 refs., 3 tabs., 14 figs