| Paper |
Title |
Page |
| WEPMN034 |
Electron Emission from Surface Roughness on Cavity in Low Temperature |
3003 |
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- H. Kim, H.J. Cha, S. Choi, W.K. Kim, G.-T. Park
IBS, Daejeon, Republic of Korea
- Y. Chang
Hanshin University, Kyungki, Republic of Korea
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Electron emission phenomenon from surface roughness on cavity is investigated. The distribution of the electric field from the surface roughness can be obtained on cavity surface. The field emission is calculated from the electric field distribution. The generalized electron emission from electric field and temperature effect is also calculated on the surface roughness of the cavity.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2015-WEPMN034
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| WEPMN035 |
QWR and HWR Cryomodules for Heavy Ion Accelerator RAON |
3006 |
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- W.K. Kim, H.J. Cha, H. Kim, H.J. Kim, Y. Kim, M. Lee, G.-T. Park
IBS, Daejeon, Republic of Korea
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The accelerator called RAON has five kinds of cryomodules such as QWR, HWR1, HWR2, SSR1 and SSR2. The QWR and HWR1 cryomodules are designed and fabricated. The cryomodules will be operated at 2 K and 4 K in order to operate the superconducting cavities. The static heat load of the system was analytically computed for each configuration. The functional requirement of the cryomodules and the static heat load measurement of the QWR and HWR1 cryomodules are presented in this research.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2015-WEPMN035
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| THPF069 |
The Early Results of the Vertical Test for β=0.12 HWR at RISP |
3839 |
| |
- G.-T. Park, H.J. Cha, H.C. Jung, H. Kim, W.K. Kim, Y.J.K. Kim
IBS, Daejeon, Republic of Korea
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At RISP, we are planning to perform the vertical test of the β=0.12 half wave resonator. We report our progress on the preparation of the test including the cryogenic system, the RF system, the control and data acquisition system, and the radiation shields. We had the first few occaaisions of the cool down and various measurements at a low gradient. Out preliminary result on the Q0-Eacc excitation curve will be given.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2015-THPF069
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| THPF070 |
Prototyping Progress of SSR1 Single Spoke Resonator for RAON |
3842 |
| |
- H.J. Cha, H. Kim, H.J. Kim, W.K. Kim, G.-T. Park
IBS, Daejeon, Republic of Korea
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The fabrication of prototypes for four different types of superconducting cavities (QWR, HWR, SSR1, and SSR2) for the Korean heavy ion accelerator, “RAON” is in progress. In this presentation, we report the current status of the SSR1 cavity (β=0.3 and f=325 MHz) prototype fabrication based on the technical designs. The simulation results on the target frequency determination for the clamp-up test of the prototype are also given.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2015-THPF070
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