Electrical Network Analysis for Vacuum Profile of MedAustron

MedAustron is a synchrotron based hadron therapy facility for cancer treatment currently under construction in Wiener Neustadt, Austria, 40 km south-west of Vienna. Ion beams of H+3 and C4+ are generated in gaseous plasma (H2 or CO2) in an Electron Cyclotron Resonance (ECR) ion source and extracted at a kinetic energy of 8 keV=u and transformed by the Low-Energy Beam Transfer line (LEBT). The beam of ions is then accelerated up to 400 keV/u in the Linear accelerator (LINAC) and transferred via the Medium Energy Beam Transfer line (MEBT) to the synchrotron. After extraction, the beam is transferred to the treatment rooms for cancer therapy use. The quality of the dose delivered to the patient for cancer treatment is ultimately determined by the performance of the beam delivery chain. The performance of beam delivery chain are accordingly influenced by many factors in the entire accelerator chain and the vacuum performance is one of key factors steering the beam quality, especially in the synchrotron. In this report, a summary of the simulations done for the entire MedAustron accelerator complex is presented by using so-called Electrical Network Analysis (ENA).