Duoplasmatron beam characteristic in an ion source test stand for an accelerator mass spectrometer

Park, Sae-Hoon; Lee, Sang-Hun; Kim, Yu-Seok

doi:10.1016/j.vacuum.2019.03.034

Cited by 9 publications

(2 citation statements)

References 8 publications

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“…Duoplasmatron sources are commonly used in proton linacs due to their good performance and reliability [11][12][13][14]. A duoplasmatron source with triode conical electrodes is used in the NPS project to provide 65 keV, 40 mA beam.…”

Section: Beam Extraction From An Ion Sourcementioning

confidence: 99%

Optimization and analysis of a low-energy injector for high-intensity proton beam

Zhou¹,

Zhang²,

Zhang³

et al. 2021

J. Inst.

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Nanjing University and local government are pushing ahead with a high-intensity proton linac project called Nanjing Proton Source (NPS). At the first stage, a low-energy injector including an ion source and a low-energy beam transport (LEBT) will be set up to provide 65 keV, 28 mA proton beam. A duoplasmatron source with triode electrodes and a two-solenoid magnetic focusing LEBT is our favorable choice. As we know, the most important role of the LEBT is to minimize the emittance growth and optimize the Twiss parameters into radio frequency quadrupole (RFQ). This paper clearly introduces the optimization procedure that sets effective solenoid fields as two free parameters to search for the minimum rms emittance and the best-matched Twiss parameters by plotting contour maps. The detailed LEBT layout and solenoids design are completed based on the optimization. The robustness and stability of the LEBT are also analyzed in the end. The beam phase-space distribution and beam qualities are discussed under a range of space charge compensation degrees and different initial beam distribution types. Besides, the LEBT is designed to eliminate the vast majority of beam contaminants by using two collimators.

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Section: Beam Extraction From An Ion Sourcementioning

confidence: 99%

Optimization and analysis of a low-energy injector for high-intensity proton beam

Zhou¹,

Zhang²,

Zhang³

et al. 2021

J. Inst.

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“…Thus, to prevent contamination of the background level, a direct gas injection system with a gaseous ion source has been designed and fabricated at Dongguk University to apply high-level 14 C counts. This gaseous ion source can reduce the time required for sample pretreatment, graphitization, and targeting [6].…”

mentioning

confidence: 99%

Experimental Investigation of Ion Beam Extraction in Filament-Driven Negative-Carbon-Ion Sources With Various Geometrical Configurations for Accelerator Mass Spectrometry

Park

Lee

Kim

2020

IEEE Trans. Plasma Sci.

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A negative carbon-ion source was designed for accelerator mass spectrometry for application in the medical field to minimize cross-contamination and to increase the measurement efficiency. The ion source was designed by adjusting the distance between the plasma and the extraction electrodes and by changing the anode structure. Various prototype ion source configurations were fabricated to construct an ion source test stand to confirm the carbon beam extraction. The transport efficiency of the negative carbon beam was experimentally investigated using a filament-driven ion source to determine the geometrical effect of the anode configuration. The carbonion source was operated under carbon dioxide gas flowing at 3.0 sccm at a high voltage of −30.0 kV and an applied arc current of up to 0.5 A and various magnetic fields. The optimized anode structure and operating conditions of the ion source with the beam characteristics must be verified to measure the beam current with various ion source parameters. The effects of various operating and structural conditions on the beam current are evaluated in this article.

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Extraction simulation of a carbon ion beam with particle distribution in a three-electrode system

Park,

Kim

2024

Computer Physics Communications

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Duoplasmatron beam characteristic in an ion source test stand for an accelerator mass spectrometer

Cited by 9 publications

References 8 publications

Optimization and analysis of a low-energy injector for high-intensity proton beam

Optimization and analysis of a low-energy injector for high-intensity proton beam

Experimental Investigation of Ion Beam Extraction in Filament-Driven Negative-Carbon-Ion Sources With Various Geometrical Configurations for Accelerator Mass Spectrometry

Extraction simulation of a carbon ion beam with particle distribution in a three-electrode system

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