Medium-energy crossbar H-mode drift tube linear accelerator design and the variable energy adjustment research
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Crossbar H-mode drift tube linear accelerator (CH-DTL) can be used to efficiently accelerate high-intensity, medium-energy charged particles. We have designed an accelerator system that uses seven CH-DTLs to accelerate deuteron beam of 10 mA to 17.9 MeV. The purpose of this accelerator is to produce the medical radioisotope Lutetium-177 (177Lu) through nuclear reactions. To expand the application range of this accelerator, facilitate user operations and save costs, we have developed a Python program called OPVEA to explore the possibility of variable energy design for the CH-DTL. We found that by changing the parameters, i.e. input phase and voltage factor of only the last cavity, the output energy of the beam can be continuously varied between 13.4 and 17.9 MeV. In this way, this accelerator system can also be applied to the production of radioactive isotopes such as 89Zr, 124I, and 186Re, and can be used as a high-flux neutron source. We have presented the working principle of OPVEA in the paper and verified its results with Tracewin and CST software, successfully proving the feasibility of variable energy design for the linear accelerator.
Abstract
Crossbar H-mode drift tube linear accelerator (CH-DTL) can be used to efficiently accelerate high-intensity, medium-energy charged particles. We have designed an accelerator system that uses seven CH-DTLs to accelerate deuteron beam of 10 mA to 17.9 MeV. The purpose of this accelerator is to produce the medical radioisotope Lutetium-177 (177Lu) through nuclear reactions. To expand the application range of this accelerator, facilitate user operations and save costs, we have developed a Python program called OPVEA to explore the possibility of variable energy design for the CH-DTL. We found that by changing the parameters, i.e. input phase and voltage factor of only the last cavity, the output energy of the beam can be continuously varied between 13.4 and 17.9 MeV. In this way, this accelerator system can also be applied to the production of radioactive isotopes such as 89Zr, 124I, and 186Re, and can be used as a high-flux neutron source. We have presented the working principle of OPVEA in the paper and verified its results with Tracewin and CST software, successfully proving the feasibility of variable energy design for the linear accelerator.