400‐MeV Electron Linac to Have High Intensity, Long Duty Cycle

MIT is building a 400‐MeV electron linear accelerator, which at full energy is expected to produce 100–200 microamperes with a 1.8% duty ratio. At 100 MeV, beam intensity should be about three times as high with a duty ratio of about 6%. The pulse length of the machine can be varied from a few nanoseconds to 15 microseconds, and the repetition rate will be adjustable to a maximum of 5000 Hz.