Title :
Research and experiments on niobium-sputtered superconducting QWR in Peking University
Author :
Hao, J.K. ; Quan, S.W. ; Zhao, K. ; Zhang, N.C. ; Wang, L.F. ; Shen, Z.L. ; Lu, X.Y. ; Zhu, F. ; Xiang, R. ; Huang, S.L. ; Meng, T.J. ; Gu, G.A. ; Chen, J.E.
Author_Institution :
Inst. of Heavy Ion Phys., Peking Univ., Beijing, China
fDate :
6/23/1905 12:00:00 AM
Abstract :
R&D on SC quarter wave resonators (QWRs) for heavy ion linacs were initiated in China several years ago. A DC bias-voltage sputtering technology was developed in Peking University for niobium-coated copper QWR. A niobium-sputtered copper QWR with good niobium films was successfully made in October 1999. Low temperature experiments were carried out from November 1999 to September 2000. The accelerating gradient of 5~6 MV/m can be obtained with no beam load at 4.2 K. The QWR is installed after the 2×6 MV tandem and is used to accelerate proton beams. The accelerating gradient of 3 MV/m was obtained with a proton beam load
Keywords :
accelerator cavities; ion accelerators; linear accelerators; sputtering; superconducting cavity resonators; 4.2 K; Cu; DC bias-voltage sputtering; Nb; Nb films; Nb sputtered; ccelerating gradient; heavy ion linac; proton beam; superconducting QWR; superconducting quarter wave resonators; Acceleration; Copper; Niobium; Particle beams; Physics; Research and development; Sputtering; Superconducting films; Temperature; Voltage;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.986616
