SRF2011 - List of Authors (Xiao, Q.)

Paper

Title

Page

IHEP 1.3GHz Low-Loss Large Grain 9-cell cavity R&D for ILC

611

J.Y. Zhai, J.P. Dai, J. Gao, D.Z. Li, Z.Q. Li, Z.C. Liu, Q.Y. Wang, Q. Xiao, T.X. Zhao
IHEP Beijing, Beijing, People's Republic of China

The combination of the low-loss shape and large grain niobium material is expected to be the possible way to achieve higher gradient and lower cost for ILC 9-cell cavities, and will be essencial for the ILC 1 TeV upgrade. As the key component of the “IHEP 1.3 GHz SRF Accelerating Unit Project”, a low-loss shape 9-cell cavity using Ningxia large grain niobium (IHEP-01) was fabricated and surface treated (CBP, CP, annealing, pre-tuning) at IHEP. The cavity reached 20 MV/m in the first vertical test at KEK STF on July 2010. The quench locations were found by T-mapping and optical inspection. Equator defects were removed by further CBP treatment. Second vertical test on this cavity was done at JLAB recently after 2nd processing at IHEP. This paper reports the latest result of the vertical test and surface diagnostics.

Slides WEIOB06 [4.906 MB]

Paper	Title	Page
WEIOB06	IHEP 1.3GHz Low-Loss Large Grain 9-cell cavity R&D for ILC	611
	J.Y. Zhai, J.P. Dai, J. Gao, D.Z. Li, Z.Q. Li, Z.C. Liu, Q.Y. Wang, Q. Xiao, T.X. Zhao IHEP Beijing, Beijing, People's Republic of China
	The combination of the low-loss shape and large grain niobium material is expected to be the possible way to achieve higher gradient and lower cost for ILC 9-cell cavities, and will be essencial for the ILC 1 TeV upgrade. As the key component of the “IHEP 1.3 GHz SRF Accelerating Unit Project”, a low-loss shape 9-cell cavity using Ningxia large grain niobium (IHEP-01) was fabricated and surface treated (CBP, CP, annealing, pre-tuning) at IHEP. The cavity reached 20 MV/m in the first vertical test at KEK STF on July 2010. The quench locations were found by T-mapping and optical inspection. Equator defects were removed by further CBP treatment. Second vertical test on this cavity was done at JLAB recently after 2nd processing at IHEP. This paper reports the latest result of the vertical test and surface diagnostics.
	Slides WEIOB06 [4.906 MB]