LORASR code development

The LORASR code is specialized on the beam dynamics design of Separate Function DTL’s based on the ‘Combined 0 Degree Structure (KONUS)’ beam dynamics concept. The code has been used for the beam dynamics design of several linacs which are in operation (GSI-HLI, GSI-HSI, CERN Linac 3, TRIUMF ISAC-I) or are scheduled to start beam operation in the near future (Heidelberg Therapy Injector, HITRAP Decelerator, GSI Proton Linac). The recent code development was focused on the implementation of a new PIC 3D FFT space charge routine, allowing for time-efficient simulations with up to 10 6 macro particles routinely, as well as of tools for error studies and loss profile investigations. The LORASR code was successfully validated within the European ‘HIPPI’ Project activities. The error study tools are a stringent necessity for the design of future high intensity linacs. The new LORASR release will allow particle loss studies during the design of the GSI FAIR Facility Proton Linac, as well as detailed transmission investigations on the IFMIF Accelerator. This paper presents the status of the LORASR code development and the benchmarking results.