Author: Nuttens, V.
Paper Title Page
MO4PB02 The IBA Superconducting Synchrocyclotron Project S2C2 115
  • W.J.G.M. Kleeven, M. Abs, E. Forton, S. Henrotin, Y. Jongen, V. Nuttens, Y. Paradis, E.E. Pearson, S. Quets, P. Verbruggen, S. Zaremba, J. van de Walle
    IBA, Louvain-la-Neuve, Belgium
  • M. Conjat, J. Mandrillon, P. Mandrillon
    AIMA, Nice, France
  In 2009 IBA decided to start the development of a compact superconducting synchrocyclotron as a proton-source for the small footprint proton therapy system called Proteus One ®. The cyclotron has been completely designed and constructed and is currently under commissioning at the IBA factory. Its design and commissioning results will be presented.  
slides icon Slides MO4PB02 [21.175 MB]  
TU4PB01 Mapping of the New IBA Superconducting Synchrocyclotron (S2C2) for Proton Therapy 272
  • J. van de Walle, W.J.G.M. Kleeven, C. L'Abbate, V. Nuttens, Y. Paradis
    IBA, Louvain-la-Neuve, Belgium
  • M. Conjat, J. Mandrillon, P. Mandrillon
    AIMA, Nice, France
  The magnetic field in the Superconducting Synchrocyclotron (S2C2) has been measured with a newly developed mapping system during the commissioning of the machine at IBA. The major difference with other mapping systems at IBA is the usage of a search coil, which provides high linearity over a large magnetic field range and the possibility to measure in a more time economic way. The first mapping results of the S2C2 were compared with OPERA3D calculations. The average field, the tune functions and the first harmonic were the main quantities which were compared and showed good agreement with the model. For example, the average field was within 0.3% of the calculation over the entire machine. In order to assess the efficiency of the regenerative extraction mechanism, protons were tracked in the measured map up to extraction. The horizontal position of the main coil was found to be a crucial parameter for the optimization of the extraction. A dedicated linear mapping system consisting of 7 Hall probes was positioned in the extraction channel of the S2C2. The field values from this linear mapping system were used to assess the optics of the beam exiting the S2C2.  
slides icon Slides TU4PB01 [2.357 MB]  
WEPSH043 Performance of IBA New Conical Shaped Niobium [18O] Water Targets 406
  • F.G. Devillet, J. Courtyn, J.-M. Geets, M. Ghyoot, E.K. Kral, O. Michaux, B. Nactergal, V. Nuttens
    IBA, Louvain-la-Neuve, Belgium
  • R. Mooij, L.R. Perk
    BV Cyclotron VU, Amsterdam, The Netherlands
  Background: Because of an ever increasing demand for Fluoride-18 (18F-), efforts are made to increase the performance of the 18F-target systems. Moreover, given the particularly high cost of 18O enriched water, only a small volume of this target material is desired. Procedure: Four conical shaped targets* with different target chamber sizes (Conical 6 – 2.4ml; Conical 8 – 3.2ml; Conical 12 - 5ml; Conical 16 - 7ml) were tested using IBA Cyclone® 18 MeV cyclotrons. The targets were filled with different volumes of 18O water (enrichment >92%) and irradiated with 18 MeV protons on target with beam currents up to 145 μA for 30–150 minutes. Fluoride-18 saturation activity yields and pressure curves were completed. Radionuclidic impurities were measured, even if the new target is using the same principle of Niobium body with Havar® window. Conclusions: Reliable operation in a production environment has been observed at beam currents up to 145 μA using less 18O enriched water as compared to the currently available IBA target systems without affecting the yield. The new design with less Orings and direct insertion of flow line into the niobium chamber has proven its effectiveness.
*Patent application: WO 2012/055970 A1
poster icon Poster WEPSH043 [0.836 MB]