Abstract
Superconducting magnets which are installed on a Maglev vehicle vibrate under the influence of various disturbances in running. Main disturbance is the harmonic ripples of electromagnetic flux generated by ground coils. To estimate the influence of the harmonic flux ripples, the facilities called an electromagnetic vibration simulator were constructed. Heat load in some magnets, made in 1980's, extremely increased on the high frequency region in the electromagnetic vibration test. We have investigated the cause of these phenomena from various aspects, and made short superconducting magnet models containing a single superconducting coil and superconducting magnets with high rigidity having different internal structures for testing various ideas to reduce the heat load. As a result, we have obtained good results. Then we have started on production of the new superconducting magnets for Yamanashi test line. Here is an outline of the new magnets.
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