射频超导技术与ERL技术新进展

射频超导谐振腔可以工作在连续波或长宏脉冲模式. 射频超导技术已发展为加速各种带电粒子束的重要手段. 射频超导技术发展的前期受材料性能、腔的处理以及加工安装水平等的限制. 经过几十年的不断改进, 射频超导技术获得了重大突破. 射频超导腔应用到超导加速器上并成功运行, 积累了腔的质量控制工艺和工业化制备的大量经验. 近期国际上面对未来大科学装置项目, 在射频超导技术方面进行了大量的研发工作, 主要包括提高超导腔加速梯度的新腔型研究和采用新型材料(大晶粒铌材)超导腔的研究. 能量回收直线加速器(ERL)技术是近年来获得发展的重要加速器技术. ERL具有高效、节能、稳定性好、低辐射水平等优势, 被越来越多地应用到先进光源和自由电子激光装置中.

Recent Progress on RF Superconductivity and ERL

RF superconducting cavities can work in CW mode or long pulse mode.RF superconducting technology is widely used in particle accelerators.The development of RF superconductivity is limited by the material,surface treatment and installation.SRF technology is improved greatly after dozens of years'researches.Lots of techniques and experiences have been accumulated by running superconducting accelerators.In recent years,researches and developments have been carried out for future large scientific project.New cavity shape and superconducting cavities made of large grain niobium are the hot frontiers in SRF field.Energy Recovery Linacs have been developed in recent years.ERLs has many advantages such as high efficiency,energy saving,good stability,low radiation level,etc.ERLs are more and more used in advanced light sources and free electron laser facilities.