• Denker, A.; Röhrich, J.; Rethfeldt, C.; Heufelder, J.; Weber, A.; Stark, R.; Cordini, D.; Bundesmann, J.; Damerow, T.; Fanselow, T.; Hildebrand, D.; Hiller, U.; Kailouh, I.; Müller, U.; Hahn, W.; Heidenreich, G.; Stapel, H.: Status HZB Cyclotron. In: Proceedings of CYCLOTRONS´ 13, 2013. - ISBN 978-3-95450-128-1, p. MOPPT002/1-3
    http://cyc13proc.triumf.ca/prepress/papers/moppt002.pdf


Abstract:
For 15 years, eye tumours are treated in collaboration with the Charité - Universitätsmedizin Berlin. In 2012 we celebrated the 2000th patient. Our cyclotron is again served by 2 different injectors: a 6 MV Van-de-Graaff and a 2 MV tandetron. The tandetron was optimized especially for the requirements of therapy. Its advantages are easier handling, lower service requirements and a shorter injection beam line. Development of the source resulted in safe operation of more than 600 h and extremely stable beam current. The tandetron is in operation for therapy since 2011. The Van-de-Graaff was considered to be a temporary backup. New requests for beams with a very specific time structure occurred, which can be provided only with the Van-de-Graaff-cyclotron beam line. Pulse structures of high variability; from single pulses of 1 ns at a max. repetition rate of 75 kHz to pulse packets with a length up to 100 μs were tested. The latter was used for the production of pulsed neutron radiation for comprehensive testing of dosimeters. Although major breakdowns have a huge impact on the up-time due to the small number of beam time hours, breakdowns over the past years amounted to less than 5%.