Three-fold Increase of the Proton Beam Current in the Vacuum Insulation Tandem Accelerator

In BINP neutron source for boron neutron capture therapy of cancer based on the vacuum insulation tandem accelerator and lithium target for neutron generation was constructed. After optimization of the injection of negative hydrogen ions and modernization of the stripping target 1.6 mA 2 MeV proton beam was obtained. Improvements of the accelerator to suppress accompanying electron current were introduced, and after making changes to protection system of high voltage power supply a stable proton beam with a current of 4.5 mA was obtained. Analysis of the experimental results shows that the beam is accelerated without losses. Obtaining of proton beam with the current of more than 3 mA offers the prospects of using of accelerators for BNCT in cancer clinics.
Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea