IPAC2014 - List of Authors (Kim, W.K.)

Paper	Title	Page
WEPRI035	Stiffening Structure of the HWR at RISP	2552
	G.-T. Park, H.J. Cha, H. Kim, H.J. Kim, W.K. Kim IBS, Daejeon, Republic of Korea
	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.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI035
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI036	Fabrication Design of QWR and HWR Cryomodules	2555
	W.K. Kim, H. Kim, H.J. Kim, Y. Kim, M. Lee, G.-T. Park IBS, Daejeon, Republic of Korea
	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.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI036
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI106	Design of Cryomoudles for RAON	2746
	Y. Kim, C. Choi, H.M. Jang, Y.W. Jo, H.J. Kim, W.K. Kim, M. Lee IBS, Daejeon, Republic of Korea
	The accelerator will be built in Korea called RAON has four kinds of superconducting cavities such as QWR, HWR1, SSR1 and SSR2, and those cavities are operating in 2 K. The fabrication design for the SSR1 and SSR2 cryomodules are reported in this paper. The issues included in the paper are thermal and structural analysis results for the components such thermal shield, support post, two phase pipe, and so on.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI106
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI107	Fundamental Thermal Analysis for Cryogenic System Design	2749
	H. Kim, D. Jeon, W.K. Kim, G.-T. Park, I. Shin, J.H. Shin, S.W. Yoon IBS, Daejeon, Republic of Korea
	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.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI107
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Stiffening Structure of the HWR at RISP

2552

G.-T. Park, H.J. Cha, H. Kim, H.J. Kim, W.K. Kim
IBS, Daejeon, Republic of Korea

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.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI035

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI036

Fabrication Design of QWR and HWR Cryomodules

2555

W.K. Kim, H. Kim, H.J. Kim, Y. Kim, M. Lee, G.-T. Park
IBS, Daejeon, Republic of Korea

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.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI036

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI106

Design of Cryomoudles for RAON

2746

Y. Kim, C. Choi, H.M. Jang, Y.W. Jo, H.J. Kim, W.K. Kim, M. Lee
IBS, Daejeon, Republic of Korea

The accelerator will be built in Korea called RAON has four kinds of superconducting cavities such as QWR, HWR1, SSR1 and SSR2, and those cavities are operating in 2 K. The fabrication design for the SSR1 and SSR2 cryomodules are reported in this paper. The issues included in the paper are thermal and structural analysis results for the components such thermal shield, support post, two phase pipe, and so on.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI106

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI107

Fundamental Thermal Analysis for Cryogenic System Design

2749

H. Kim, D. Jeon, W.K. Kim, G.-T. Park, I. Shin, J.H. Shin, S.W. Yoon
IBS, Daejeon, Republic of Korea

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.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI107

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)