Large grain niobium has the potential of simplifying the production sequence and consequently reducing the cost of the superconducting RF cavities for ILC. To investigate the feasibility of fabrication and the possibi...Large grain niobium has the potential of simplifying the production sequence and consequently reducing the cost of the superconducting RF cavities for ILC. To investigate the feasibility of fabrication and the possibility to achieve high gradient by large grain cavities, two 1.3 GHz cavities were made of China large grain niobium and a series of vertical tests were carried out following several different surfaces treatment procedures. Two cavities have both reached the high gradient of more than 43 MV/m repeatedly and the maximum accelerating field of 47.9 MV/m has been achieved by China large grain niobium. This paper introduces the features of the fabrication and surface treatments on the large grain cavities and presents the preliminary results of the research.展开更多
The superconducting RF cavity and superconducting magnet are the key devices in modern accelerators. With the development of accelerator technology and requirement of higher beam energy and luminosity,the cryogenic an...The superconducting RF cavity and superconducting magnet are the key devices in modern accelerators. With the development of accelerator technology and requirement of higher beam energy and luminosity,the cryogenic and superconducting technologies are applied widely in the accelerator construction.Based on the study of several typical accelerators which adopted cryogenic and superconducting technology,this paper introduces the recent activities of cryogenic system in overseas and domestic accelerators.展开更多
基金Supported by National Natural Science Foundation of China (10525525)
文摘Large grain niobium has the potential of simplifying the production sequence and consequently reducing the cost of the superconducting RF cavities for ILC. To investigate the feasibility of fabrication and the possibility to achieve high gradient by large grain cavities, two 1.3 GHz cavities were made of China large grain niobium and a series of vertical tests were carried out following several different surfaces treatment procedures. Two cavities have both reached the high gradient of more than 43 MV/m repeatedly and the maximum accelerating field of 47.9 MV/m has been achieved by China large grain niobium. This paper introduces the features of the fabrication and surface treatments on the large grain cavities and presents the preliminary results of the research.
文摘The superconducting RF cavity and superconducting magnet are the key devices in modern accelerators. With the development of accelerator technology and requirement of higher beam energy and luminosity,the cryogenic and superconducting technologies are applied widely in the accelerator construction.Based on the study of several typical accelerators which adopted cryogenic and superconducting technology,this paper introduces the recent activities of cryogenic system in overseas and domestic accelerators.
