Speaker
Description
Recently, the Special Environmental Science and Application Infrastructure for Materials and Devices (SEMD), proposed by Harbin Institute of Technology (Shenzhen), has commenced construction. It is dedicated to investigating the mechanisms governing the influence of special service environments on materials/devices. Within the SEMD facility, a medium-to-high-energy Proton Irradiation Research System has been initiated. It aims at creating a multi-disciplinary R&D platform and bringing together various scientific communities around a high-intensity isochronous cyclotron with beam energies up to 100 MeV (upgradable to 150 MeV). A compact cyclotron scheme for accelerating H- ions with four straight sectors has been adopted. Its magnet is designed to have a height of approximately 2 meters and a radius of around 3 meters, with a maximum magnetic field of 1.4 T. Two half-wave RF cavities are installed in the valley regions of the magnet, and its working frequency is around 45.7 MHz. H- beams will be accelerated and then extracted via carbon stripping foils. By optimizing their positions, we hope to obtain proton beams with energies varying from 30 MeV to 100 MeV. A multi-cusp ion source has been selected in order to get a high beam current at the experimental terminals. The output intensity is designed to be 500 μA in maximum and the intensity required for stable operation is about 150 μA. In the main text, we will introduce the preliminary design work completed so far.
Funding Agency
Guangdong Basic and Applied Basic Research Foundation (No. 2023A1515110901), Shenzhen Pengcheng Peacock Project (No. NA11409004) and Shenzhen Science and Technology Program (Grant No. RCBS202312110907
