Münster 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
ST: Fachverband Strahlen- und Medizinphysik
ST 6: Radiation Monitoring and Dosimetry II
ST 6.2: Vortrag
Donnerstag, 30. März 2017, 10:00–10:15, JUR 1
Source term and activation calculations for the new cyclotron for medical applications at HZDR with MCNP6 and FLUKA — •Stefan E. Müller1, Jörg Konheiser1, Bärbel Naumann1, Anna Ferrari1, and Alice Magin2 — 1Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Deutschland — 2KIT, Karlsruhe, Deutschland
A new cyclotron is currently being commissioned at the Center of Radiopharmaceutical Cancer Research of the HZDR. The energy range of up to 28 MeV protons for the 18O(p,n)18F reaction required a recalculation of the neutron source terms needed in the shielding calculations, since the manufacturer supplied data was based on a 24 MeV proton beam. The radiation transport programs MCNP6 and FLUKA were used to calculate the neutron fluence emerging from the 18O-enriched water target during operation. To validate the radiation fields obtained in the simulations, an experimental program has been started using activation samples which are placed close to the water target of a cyclotron which is currently used at HZDR to produce 18F with 18 MeV protons. After irradiation, the samples are analyzed, and the resulting activation is compared to Monte Carlo calculations of the expected sample activation for this case. Once the new cyclotron is fully operational, these measurements will be extended to 28 MeV protons.