The magnets for extraction from the KEK proton synchrotron main ring

Fast extraction from the KEK proton synchrotron main ring started at December 1976 and ended at June 1981 with ending the experiments to use the KEK 1m Bubble Chamber. On the other hand, slow extraction from the KEK proton synchrotron main ring started at November 1977 and the first stage on the slow extraction ended at May 1990 with changing the flat-top duration from about 0.65 second to about 2 second. We made most magnets for extraction from the KEK proton synchrotron main ring, but we don't report about these magnets until now. As we think that compiling the materials of the extraction's magnets is useful, we publish this report. (author)