IPAC2013 - List of Keywords (superconducting-cavity)

Paper	Title	Other Keywords	Page
WEPWO015	Electron Beam Welding for High Gradient Superconducting Cavity	electron, cavity, linear-collider, collider	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.

WEPWO021	ADS 650MHz β=0.82 Supercongducting Cavity Research Status	cavity, proton, linac, status	2361
	Z.C. Liu, J. Gao, S. Jin, Y. Liu, J.Y. Zhai, T.X. Zhao, H.J. Zheng IHEP, Beijing, People's Republic of China J.X. Wang, H. Yu, H. Yuan BIAM, Beijing, People's Republic of China
	IHEP is developing a 650MHz β=0.82 supercongducting cavity for the China ADS project. The cavity is for the energy range of from 367MeV to 1500Mev. We have chosen a five cell cavity and optimized the cavity with Epk/Eacc and Bpk/Eacc to reach high gradient. Two cavity parts were fabricated and the EB welding is in process. This paper will show the fabrication status and measurement results.

WEPWO023	High Current Superconducting Cavity Study and Design	cavity, linac, accelerating-gradient, electron	2366
	Z.C. Liu, J. Gao, S. Jin, Y. Liu, J.Y. Zhai, T.X. Zhao, H.J. Zheng IHEP, Beijing, People's Republic of China F. Wang PKU, Beijing, People's Republic of China
	Funding: Project 11275226 supported by NSFC IHEP is developing a new type of high current superconducting cavity called slotted cavity proposed in 2010. The cavity is suitable for accelerating high beam current in Energy Recovery Linac (ERL). The cavity can extremely dump high order modes (HOMs) in the cavity to keep a high beam current threshold in the linac. We have studied and designed a three cell cavity and the fabrication is under going.

WEPWO036	Conceptual Design of a Superfluid Superconducting Third Harmonic RF System for the SSRF Storage Ring	cavity, cryogenics, controls, synchrotron	2381
	H.T. Hou, J.F. Liu, Z.T. Zhao SINAP, Shanghai, People's Republic of China J.F. Liu Shanghai KEY Laboratory of Cryogenics & Superconducting RF Technology, Shanghai, People's Republic of China
	Harmonic cavity can improve the beam quality through bunch size lengthening which includes providing Landau damping, suppressing coupled bunch instability and microwave instability, enhancing the beam current per bunch besides the beam lifetime improvement. A passive third harmonic superconducting cavity operating at super fluid liquid helium has been proposed for the SSRF storage ring with compromise on the required harmonic voltage, limited installation space and dissipated cryogenic power. This paper will mainly present the conceptual design of the harmonic rf system including the requirement of SSRF, a brief review on beam dynamics of harmonic rf system and the harmonic cavity choice.

THPWO063	The Early Stage of the Cavity Fabrication Process (ECT and furnace) for RAON	cavity, niobium, vacuum, linac	3901
	M.J. Joung, H.C. Jung, H.J. Kim IBS, Daejeon, Republic of Korea
	RAON is consist of three part about the acceleration line. These are SCL1, SCL2 and SCL3. SCL1 and SCL3 will be made from QWR (Qarter Wave Resonator) and HWR (Half Wave Resonator). And SCL2 will be made from SSR1 (Single Spoke Resonator) and SSR2 (Single Spoke Resonator). Accordingly, The RAON needs 48 QWR, 276 HWR, 88 SSR1 and 136 SSR2 to get the performance that we want. To accelerate the particle using lots of cavity, we have to make a process of cavity fabrication for RAON. We will compare to each process made from the other laboratories and to make the optimal process for RAON to get the performance that we want. And that process will consider the type of cavity and the purpose of the accelerator. I will introduce the early stage of the cavity fabrication process for RAON in this paper.

Paper

Title

Other Keywords

Page

WEPWO015

Electron Beam Welding for High Gradient Superconducting Cavity

electron, cavity, linear-collider, collider

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.

WEPWO021

ADS 650MHz β=0.82 Supercongducting Cavity Research Status

cavity, proton, linac, status

2361

Z.C. Liu, J. Gao, S. Jin, Y. Liu, J.Y. Zhai, T.X. Zhao, H.J. Zheng
IHEP, Beijing, People's Republic of China
J.X. Wang, H. Yu, H. Yuan
BIAM, Beijing, People's Republic of China

IHEP is developing a 650MHz β=0.82 supercongducting cavity for the China ADS project. The cavity is for the energy range of from 367MeV to 1500Mev. We have chosen a five cell cavity and optimized the cavity with Epk/Eacc and Bpk/Eacc to reach high gradient. Two cavity parts were fabricated and the EB welding is in process. This paper will show the fabrication status and measurement results.

WEPWO023

High Current Superconducting Cavity Study and Design

cavity, linac, accelerating-gradient, electron

2366

Z.C. Liu, J. Gao, S. Jin, Y. Liu, J.Y. Zhai, T.X. Zhao, H.J. Zheng
IHEP, Beijing, People's Republic of China
F. Wang
PKU, Beijing, People's Republic of China

Funding: Project 11275226 supported by NSFC
IHEP is developing a new type of high current superconducting cavity called slotted cavity proposed in 2010. The cavity is suitable for accelerating high beam current in Energy Recovery Linac (ERL). The cavity can extremely dump high order modes (HOMs) in the cavity to keep a high beam current threshold in the linac. We have studied and designed a three cell cavity and the fabrication is under going.

WEPWO036

Conceptual Design of a Superfluid Superconducting Third Harmonic RF System for the SSRF Storage Ring

cavity, cryogenics, controls, synchrotron

2381

H.T. Hou, J.F. Liu, Z.T. Zhao
SINAP, Shanghai, People's Republic of China
J.F. Liu
Shanghai KEY Laboratory of Cryogenics & Superconducting RF Technology, Shanghai, People's Republic of China

Harmonic cavity can improve the beam quality through bunch size lengthening which includes providing Landau damping, suppressing coupled bunch instability and microwave instability, enhancing the beam current per bunch besides the beam lifetime improvement. A passive third harmonic superconducting cavity operating at super fluid liquid helium has been proposed for the SSRF storage ring with compromise on the required harmonic voltage, limited installation space and dissipated cryogenic power. This paper will mainly present the conceptual design of the harmonic rf system including the requirement of SSRF, a brief review on beam dynamics of harmonic rf system and the harmonic cavity choice.

THPWO063

The Early Stage of the Cavity Fabrication Process (ECT and furnace) for RAON

cavity, niobium, vacuum, linac

3901

M.J. Joung, H.C. Jung, H.J. Kim
IBS, Daejeon, Republic of Korea

RAON is consist of three part about the acceleration line. These are SCL1, SCL2 and SCL3. SCL1 and SCL3 will be made from QWR (Qarter Wave Resonator) and HWR (Half Wave Resonator). And SCL2 will be made from SSR1 (Single Spoke Resonator) and SSR2 (Single Spoke Resonator). Accordingly, The RAON needs 48 QWR, 276 HWR, 88 SSR1 and 136 SSR2 to get the performance that we want. To accelerate the particle using lots of cavity, we have to make a process of cavity fabrication for RAON. We will compare to each process made from the other laboratories and to make the optimal process for RAON to get the performance that we want. And that process will consider the type of cavity and the purpose of the accelerator. I will introduce the early stage of the cavity fabrication process for RAON in this paper.