DESY III-dump system with one fast kicker

The dump system works at an injection momentum of 350 MeV/C. The kicker, with a rise time of t=90 ns and a variable pulse length up to t=3 /spl mu/s, can eject the entire DESY III beam or only a section into the dump. For test runs DESY III can operate with only a few proton bunches. Beam loss at high energies results then in minimal radioactivity in DESY III, the transport channel and in PETRA. Short pulse operation of the kicker can also cut one out of the ten bunches into the dump. This gap protects the ejection septum from irradiation.