Replacement of SF₆ with N₂/CO₂ in design of a parallel-fed voltage multiplier for electrostatic accelerator
Publish place: Radiation Physics and Engineering، Vol: 3، Issue: 2
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_RPE-3-2_004
تاریخ نمایه سازی: 31 اردیبهشت 1401
Abstract:
Two main insulating gases of SF₆ and N₂/CO₂ mixture are employed to increase voltage capability of electrostatic accelerators. SF₆ offers more insulating capability, but environmental and technical disadvantages of SF₆ makes usage of N₂/CO₂ mixture a desirable option. This paper aims to replace SF₆ with N₂/CO₂ in design of a ۵۰۰ kV/۳۰ mA parallel-fed voltage multiplier. High-voltage section of the accelerator is a capacitive structure which in combination with rectifying elements, generates the accelerating high-voltage. The structure which is called Voltage Multiplier Capacitive Structure (VMCS) is designed and analyzed in this paper. The first structure is designed to employ SF₆ as insulating gas (VMCS۵۰۰). Then, the structure is modified to be capable of using N₂/CO₂ as insulating gas with lower breakdown voltage (VMCS۵۰۰-m). The modified structure requires more complex mechanical manufacturing process, but offers the simplicity of using N₂/CO₂ mixture, the option of using the modified structure with superior SF₆ gas, increasing the output voltage and beam energy. CST EM STUDIO was used for capacitance calculation and electric field analysis. LTSPICE was used for equivalent circuit analysis of the high voltage generating section.
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Authors
Oveis Hasanpour
Department of Radiation Applications, Shahid Beheshti University, Tehran, Iran
Fereydoun Abbasi Davani
Department of Radiation Applications, Shahid Beheshti University, Tehran, Iran
Farshad Ghasemi
Physics and Particle Accelerators Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
Mahdi Aghayan
Department of Physics, K.N. Toosi University of Technology, Teharn, Iran
Mohammad Nazari
Department of Radiation Applications, Shahid Beheshti University, Tehran, Iran
Shahin Sanaye Hajari
Physics and Particle Accelerators Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
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