Hiqh Q at Low and Medium Field.

Ciovati, G.

Technical Information Center Oak Ridge Tennessee

关键词: Accelerators;    Physics;    Magnetic fields;    Performance;   

RP-ID  :  DE2004833420

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The surface resistance of a bulk niobium superconducting rf cavity as function of the surface magnetic field is often characterized by three peculiar dependencies at low, medium and high field. Understanding the causes and the physics behind these anomalous behaviors is important to improve the performance of superconducting cavities used in particle accelerators. In this paper attention will be focused on low and medium field regions by presenting experimental results of several cavity test series and reviewing the models that try to explain these non-linearities of the surface resistance.