The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Schömers, C. AU - Cee, R. AU - Feldmeier, E. AU - Galonska, M. AU - Haberer, Th. AU - Peters, A. AU - Scheloske, S. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Reacceleration of Ion Beams for Particle Therapy J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - At the Heidelberg Ion-Beam Therapy Centre (HIT) cancer patients are treated using the raster-scanning method. A synchrotron provides pencil beams in therapy quality for 255 energy steps per ion type allowing to vary the penetration depth and thus to irradiate tumors slice-by-slice. So far, changing the beam energy necessitates a new synchrotron cycle, including all phases without beam extraction. As the no. of ions that can be accelerated in the synchrotron usually exceeds the required no. of ions for one energy slice, treatment time could be significantly reduced by reaccelerating or decelerating the remaining ions to the next energy level. By alternating acceleration and extraction phases several slices could be irradiated with only short interruptions. Therefore the reacceleration of a transversally blown up beam – due to RF-knockout extraction – must be investigated, beam losses have to be minimized. To estimate the benefit of this operation mode, treatment time has been simulated and compared to the time achieved in the past. A reduction of up to 65% is possible and more patients can be treated! Simulations and first tests of a reaccelerated and extracted beam are presented. PB - JACoW CP - Geneva, Switzerland SP - 2091 EP - 2093 KW - synchrotron KW - ion KW - extraction KW - operation KW - acceleration DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-WEPRO062 UR - http://jacow.org/ipac2014/papers/wepro062.pdf ER -