JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - UNPB AU - Smith, T.I. ED - Saito, Kenji ED - Xu, Ting ED - Sakamoto, Naruhiko ED - Schaa, Volker R.W. ED - Thomas, Paul W. TI - Design, Construction, and Utilization of the World¿s First Superconducting Linear Accelerator: 1973-2007 J2 - Proc. of SRF2023, Grand Rapids, MI, USA, 25-30 June 2023 CY - Grand Rapids, MI, USA T2 - International Conference on RF Superconductivity T3 - 21 LA - english AB - This talk will begin with a discussion of the technical and practical issues that led to the Stanford 55-cell niobium accelerator structure. The clever design of this structure, however, had the unintended consequence of complicating the regenerative beam breakup problem. External loading of breakup modes was introduced for the first time which made it possible to achieve our goal of a linac with a 100 µA average current. This discussion will be followed by a detailed description of the ground-breaking injector system designed to produce a very low emittance beam. This injector, together with its novel system for feedback control of the accelerator fields made it possible to achieve our beam energy resolution goal of 0.01%. The low emittance beam provided by the superconducting accelerator was of central importance in the pioneering free electron laser experiments. Difficulties in achieving our hoped for energy gradients spurred interest in beam recirculation. The rest of the talk will concentrate on details, unique characteristics, and performance of the linac and 5 pass recirculation system we built and operated until mid-2007. PB - JACoW Publishing CP - Geneva, Switzerland ER -