2.5 MeV CW 4-vane RFQ accelerator design for BNCT applications

Zhu, Xiaofu; Wang, Hu; Lu, Yuanrong; Wang, Zhi; Zou, Yan–Rong; Guo, Zhiyu

doi:10.1016/j.nima.2017.11.042

Cited by 17 publications

(11 citation statements)

References 20 publications

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“…Studies have found that at 10 MeV proton energy on a Be target with a moderator of MgF 2 gives an optimal epithermal neutron yield of 0.5 × 10 9 n/s/cm 2 /mA [13]. This is five times higher than the epithermal yield from 2.5 MeV protons on Li of 1E8 n/s/cm 2 /mA [14]. In conclusion to reach sufficient flux for a treatment facility a time-averaged current/power of 2 mA/20 kW would be required at 10 MeV.…”

Section: Cans Concept and Requirementsmentioning

confidence: 98%

A Prototype Compact Accelerator-based Neutron Source (CANS) for Canada

Laxdal¹,

Maharaj²,

Abbaslou³

et al. 2021

Preprint

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Canada's access to neutron beams for neutron scattering was significantly curtailed in 2018 with the closure of the National Research Universal (NRU) reactor in Chalk River, Ontario, Canada. New sources are needed for the long-term; otherwise, access will only become harder as the global supply shrinks. Compact Accelerator-based Neutron Sources (CANS) offer the possibility of an intense source of neutrons with a capital cost significantly lower than spallation sources. In this paper, we propose a CANS for Canada. The proposal is staged with the first stage offering a medium neutron-flux, linac-based approach for neutron scattering that is also coupled with a boron neutron capture therapy (BNCT) station and a positron emission tomography (PET) isotope station. The first stage will serve as a prototype for a second stage: a higher brightness, higher cost facility that could be viewed as a national centre for neutron applications.

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Section: Cans Concept and Requirementsmentioning

confidence: 98%

A Prototype Compact Accelerator-based Neutron Source (CANS) for Canada

Laxdal¹,

Maharaj²,

Abbaslou³

et al. 2021

Preprint

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“…Considering the requirements of the IAEA and the characteristics of the reaction, Peking University has conducted a simulation showing that a 2.5 MeV proton beam with a current of 15 mA can fully meet the requirements for cancer treatment [9,10]. Thus, a beam current of 20 mA was chosen with a final energy of 2.5 MeV.…”

Section: A Requirements Of Bnctmentioning

confidence: 99%

“…1 shows the main parameters of the designed beam dynamics. When considering the shortest length and high transmission efficiency as the design goals, the length of this RFQ (acceleration proton beam of up to 2.5 MeV with an operating frequency of 200 MHz) is 3.2 m. Other similar RFQ accelerators are much longer, including the ADS-RFQ [16] in the Institute of Modern Physics in China (which operates at a frequency of 162.5 MHz and accelerates the proton beam from 35 keV to 2.1 MeV), which is 4.2 m, and the BNCT-RFQ [10] at Peking University (which operates at 162.5 MHz and provides acceleration of a 20-mA proton beam at up to 2.5 MeV), which is 5.2 m. The following figures show the simulation results for the beam dynamics. In Fig.…”

Section: Beam Dynamics Designmentioning

confidence: 99%

“…As a cancer treatment method, boron neutron capture therapy (BNCT), which is a bimodal form of radiation therapy was first proposed by the American scientist Locher in 1936 [1]. Because this approach requires drugs containing 10 B and an epithermal neutron beam that can kill tumor cells without affecting other tissues, a safe and stable neutron source is necessary.…”

Section: Introductionmentioning

confidence: 99%

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Design of a 200-MHz Continuous-Wave Radio Frequency Quadrupole Accelerator for Boron Neutron Capture Therapy

Gao,

Lu,

Xing

et al. 2021

Preprint

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A high-intensity continuous wave (CW) radio frequency quadrupole (RFQ) accelerator is designed for boron neutron capture therapy (BNCT). The transmission efficiency of a 20-mA proton beam accelerated from 30 keV to 2.5 MeV can reach 98.7% at an operating frequency of 200 MHz. The beam dynamics has good tolerance to errors. By comparing the high-frequency parameters of quadrilateral and octagonal RFQ cross-sections, the quadrilateral structure of the four-vane cavity is selected owing to its multiple advantages, such as a smaller cross section at the same frequency and easy processing. In addition, tuners and undercuts are designed to tune the frequency of the cavity and achieve a flat electric field distribution along the cavity. In this paper, the beam dynamics simulation and electromagnetic design are presented in detail.

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“…19. The primary electrons are Gaussian distribution and the emission energies are ranging from 2.5 eV to 7.5 eV [24]. The averaged secondary emission yield hSEYi factors at different power levels could then be calculated to evaluate the occurrence of multipacting, which is defined as:…”

Section: E Multipacting Analysesmentioning

confidence: 99%

Design and optimization of a novel bent-vane type radio frequency quadrupole

Yang

Zhang

et al. 2020

Phys. Rev. Accel. Beams

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A novel radio frequency quadrupole (RFQ) resonant structure with bent vanes is proposed at the Institute of Modern Physics, Chinese Academy of Sciences (IMP, CAS). Compared with the traditional four-vane type RFQs, the bent-vane type structure is more compact at low frequency with significant reduction in the cross section size, and is capable of using a simple cooling system due to its rotationally symmetric structure. An 81.25 MHz proof-of-principle cavity is now under development at IMP. The beam dynamics design, electromagnetic optimizations with multipacting simulations, multiphysics analyses, and mechanical design of this novel bent-vane type RFQ (BV-RFQ) will be presented in this paper.

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2.5 MeV CW 4-vane RFQ accelerator design for BNCT applications

Cited by 17 publications

References 20 publications

A Prototype Compact Accelerator-based Neutron Source (CANS) for Canada

A Prototype Compact Accelerator-based Neutron Source (CANS) for Canada

Design of a 200-MHz Continuous-Wave Radio Frequency Quadrupole Accelerator for Boron Neutron Capture Therapy

Design and optimization of a novel bent-vane type radio frequency quadrupole

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