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http://dx.doi.org/10.3795/KSME-A.2014.38.10.1101

Finite Element Analysis of RF Coupler in Normal-Low Temperature  

Kim, Hansol (School of Mechanical Engineering, Yonsei Univ.)
Lee, Hak Yong (School of Mechanical Engineering, Yonsei Univ.)
Park, Chan (School of Mechanical Engineering, Yonsei Univ.)
Lee, Jaeyeol (School of Mechanical Engineering, Yonsei Univ.)
Lim, Dong Yeal (School of Mechanical Engineering, Yonsei Univ.)
Yoo, Jeonghoon (School of Mechanical Engineering, Yonsei Univ.)
Hyun, Myung Wook (Rare Isotope Science Project, Institute of Basic Science)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.10, 2014 , pp. 1101-1107 More about this Journal
Abstract
A heavy ion accelerator is a device that accelerates heavy ions in the radio frequency (RF) range. The electric field that flows into the RF cavity continuously accelerates heavy ions in accordance with the phase of the input electromagnetic wave. For the purpose, it is necessary to design a coupler shape that can stably transfer the RF wave into the cavity. The RF coupler in a heavy ion accelerator has a large temperature difference between the input port and output port, which radiates the RF waves. It is necessary to consider the heat deflection on the RF coupler that occurs as a result of the rapid temperature gradient from an ultra-low temperature about 0 K to a room temperature about 300 K. The purpose of this study was to improve the system performance through an analysis of the intensity of the output electric field and temperature distribution considering various shapes of the RF coupler, along with an analysis of the durability considering the heat deflection and heat loss.
Keywords
RF Coupler; Electromagnetic Wave; Temperature Gradient; Stress Deformation; Coupling Analysis;
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