Paper |
Title |
Page |
WEPWO014 |
Rf Field-Attenuation Formulae for the Multilayer Coating Model |
2343 |
|
- T. Kubo, T. Saeki
KEK, Ibaraki, Japan
- Y. Iwashita
Kyoto ICR, Uji, Kyoto, Japan
|
|
|
Formulae that describe the RF electromagnetic field attenuation in the multilayer coating model with a single superconductor layer and a single insulator layer deposited on a bulk superconductor are derived with a rigorous calculation based on the Maxwell equations and the London equation.
|
|
|
WEPWO015 |
Electron Beam Welding for High Gradient Superconducting Cavity |
2346 |
|
- T. Kubo, Y. Ajima, H. Hayano, H. Inoue, S. Kato, T. Saeki, M. Sawabe, K. Umemori, Y. Watanabe, S. Yamaguchi, M. Yamanaka
KEK, Ibaraki, Japan
- Y. Iwashita
Kyoto ICR, Uji, Kyoto, Japan
- T. Nagata
ULVAC, Inc., Tsukuba, Japan
|
|
|
Relations between electron beam welding parameters and appearances of weld beads are studied. It was found that a beam generator position and a welding direction affect a geometry of weld bead dramatically. Carbon including contaminants found after the chemistry are also commented.
|
|
|
THOBB203 |
Study on Fabrication of Superconducting RF 9-cell Cavity for ILC at KEK |
3132 |
|
- T. Saeki, Y. Ajima, K. Enami, H. Hayano, H. Inoue, E. Kako, S. Kato, S. Koike, T. Kubo, S. Noguchi, M. Satoh, M. Sawabe, T. Shishido, A. Terashima, N. Toge, K. Ueno, K. Umemori, K. Watanabe, Y. Watanabe, S. Yamaguchi, A. Yamamoto, Y. Yamamoto, M. Yamanaka, K. Yokoya
KEK, Ibaraki, Japan
- Y. Iwashita
Kyoto ICR, Uji, Kyoto, Japan
- N. Kawabata, H. Nakamura, K. Nohara, M. Shinohara
SPS, Funabashi-shi, Japan
- F. Yasuda
The University of Tokyo, Institute of Physics, Tokyo, Japan
|
|
|
We constructed a new facility for the fabrication of superconducting RF cavity at KEK from 2009 to 2011. In the facility, we have installed a deep-drawing machine, a half-cell trimming machine, an electron-beam welding machine, and a chemical etching room in one place. We started the study on the fabrication of 9-cell cavity for International Linear Collier (ILC) from 2009 using this facility. The study is focusing on the cost reduction with keeping high performance of cavity, and the goal is the establishment of mass-production procedure for ILC. This article reports the current status of the studies in CFF.
|
|
|
Slides THOBB203 [3.983 MB]
|
|
|