The Stanford Superconducting Recyclotron

With four orbits of recirculation, the HEPL superconducting recyclotron is expected to provide a high duty factor (> 70%) electron beam at 300 MeV by 1982. At present the beam has been recirculated twice and extracted. To date, maximum energy has been 156 MeV with best energy resolution (FWHM) 0.018%. The dependence of beam breakup starting currents on orbit optics has been investigated. Installation of the components for the third and fourth orbits will be completed this year.