Beam dynamics and cavity design of an 8 MeV CW IH-DTL for SYSU-PAFA

Wang, Caiyun; Lu, Liang; Ma, Wei; He, Tao

doi:10.1088/1748-0221/18/05/p05046

Cited by 2 publications

(1 citation statement)

References 28 publications

(25 reference statements)

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“…A high and uniform transverse focus is one of the most important features of the MEBT design that is intended to control emittance growth effectively. At the entrance of a DTL [15] with a relatively high beam acceptance, it was decided that no buncher would be included in the MEBT. This decision was based on the size of the beam acceptance at the entrance.…”

Section: Medium Energy Beam Transport Systemmentioning

confidence: 99%

Design and beam dynamics simulation of an 8 MeV compact accelerator-driven neutron source

Chen,

Ma,

Wang

et al. 2024

J. Inst.

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A compact accelerator-driven neutron source is proposed at Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, called Sun Yat-Sen University Proton Accelerator Facility (SYSU-PAFA). The proton accelerator is composed of a proton electron cyclotron resonance source, a four-vane radio frequency quadrupole (RFQ), and an alternative phase focusing drift tube linac (APF-DTL). It can accelerate 10 mA proton beam to 8 MeV. Due to the high current, beam matching is particularly important. In order to achieve beam matching between various components, beam transport sections are needed. The beam transport line is divided into three segments. The Low Energy Beam Transport (LEBT) ensures that the beam parameters are matched before entering the RFQ. The Medium Energy Beam Transport (MEBT) segment efficiently transfers the beam between the RFQ and DTL. The High Energy Beam Transport (HEBT) focuses on transporting the beam to the targets. The design goal of beam transport line is as short as possible while ensuring high efficiency of beam transportation. SYSU-PAFA has an overall transmission efficiency of 99%, with optimal transverse matching conditions between beam transport and RFQ or DTL accelerators. The efficient use of solenoids and magnets allows for a compact transmission section, resulting in a total length of 13.6 meters, shorter than most accelerators at the same beam energy. This paper will provide the detailed beam dynamics of the compact accelerator.

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Section: Medium Energy Beam Transport Systemmentioning

confidence: 99%

Design and beam dynamics simulation of an 8 MeV compact accelerator-driven neutron source

Chen,

Ma,

Wang

et al. 2024

J. Inst.

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Efficient optimization of an accelerator neutron source for neutron capture therapy using genetic algorithms

Ge,

Zhong,

Murata

et al. 2024

Medical Physics

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BackgroundIn recent years, genetic algorithms have been applied in the field of nuclear technology design, producing superior optimization results compared to traditional methods. They can be employed in the design and optimization of beam shaping assemblies (BSA) BSA to obtain the desired neutron beams. But it should be noted that the direct combination of Monte Carlo methods with genetic algorithms requires a significant amount of computational resources and time.PurposeDesign and optimize BSA more efficiently to achieve neutron beams that meet specified recommendations.MethodsWe propose an approach of NSGA II with crucial variables which are identified by multivariate statistical techniques. This approach significantly reduces the problem sizes, thus reducing the time required for optimization. We illustrate this methodology using the example of BSA design for AB‐BNCT.ResultsThe computational efficiency has tripled with crucial variables. By using NSGA II, we obtained optimized models conforming to both the new and old version IAEA BNCT guidelines through a single optimization process and subjected them to phantom analysis. The results demonstrate that models obtained through this method can meet the IAEA recommendations with deep advantage depth (AD) and high absorbed ratio (AR).ConclusionThe genetic algorithm with crucial variables displays tremendous potential in addressing BSA optimization challenges.

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Beam dynamics and cavity design of an 8 MeV CW IH-DTL for SYSU-PAFA

Cited by 2 publications

References 28 publications

Design and beam dynamics simulation of an 8 MeV compact accelerator-driven neutron source

Design and beam dynamics simulation of an 8 MeV compact accelerator-driven neutron source

Efficient optimization of an accelerator neutron source for neutron capture therapy using genetic algorithms

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