Paper |
Title |
Page |
WEPRI035 |
Stiffening Structure of the HWR at RISP |
2552 |
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- G.-T. Park, H.J. Cha, H. Kim, H.J. Kim, W.K. Kim
IBS, Daejeon, Republic of Korea
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The HWR being developed in RISP, Korea is in its final stage of the design. We consider the effects of the stiffeners in the presence of the helium vessel on the various detunings such as cool down, helium pressure fluctuation, Lorentz pressure. The interaction of the stiffened cavity with the helium jacket is studied via the coupled simulation by ANSYS and the optimal specification of the stiffeners are determined. In addition, the expected frequency shift is predicted to establish the target frequency bfor the manufacturing. The effect of the vibrational motion is also studied.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI035
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WEPRI036 |
Fabrication Design of QWR and HWR Cryomodules |
2555 |
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- W.K. Kim, H. Kim, H.J. Kim, Y. Kim, M. Lee, G.-T. Park
IBS, Daejeon, Republic of Korea
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The superconducting linac of RAON consists of five types of cryomodules. The cryomodules host QWR, HWR1, HWR2, SSR1, and SSR2 superconducting cavities. The cryomodules will be operated at 2K in order to test the performance of the superconducting cavities. The design of the cryomodule components is based on thermal shield to prevent incoming heat, two-phase pipe to supply superfluid helium, vacuum vessel for the formation of the internal vacuum, supporter parts for alignment and keeping structure, and magnetic shield to prevent external magnetic field. The detailed fabrication design of the cryomodules will be presented in this paper.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI036
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WEPRI107 |
Fundamental Thermal Analysis for Cryogenic System Design |
2749 |
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- H. Kim, D. Jeon, W.K. Kim, G.-T. Park, I. Shin, J.H. Shin, S.W. Yoon
IBS, Daejeon, Republic of Korea
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Non-uniform temperature distribution, surface roughness, and superfluid helium level change between 2K dewar and cryomodule are most important thermal analyses in designing cryogenic system. Effective temperature for non-uniform temperature distribution is defined. Thermal radiation property from surface roughness which is related to fractional dimension is investigated. Superfluid helium level change between 2K dewar and cryomodule is shown as a function of temperature difference. Our research can be useful thermal analyses for cryogenic system design.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI107
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