MECHANICAL DESIGN OF AUTOMATIC CAVITY TUNING MACHINES

Abstract

Since 15 years a prototype semi automatic cavity tuning machine is used at DESY to tune field flatness and concentricity of TESLA [1] shape nine cell cavities for FLASH [2]. Based on this experience a further development work was done in a collaboration effort among FNAL, KEK and DESY to support the high throughput of series cavity productions necessary for new projects like the European XFEL [3], the ILC project, Project “X ” and other SRF based future projects. Initially four machines were built within the collaboration at DESY. Two of them will be delivered and operated by the cavity vendors for tuning the XFEL cavities. The remaining two machines are delivered to FNAL for commissioning. One of them will be passed on to KEK. In the following the mechanical design and functionality of these machines is described. Special attention refers to safety aspects for the machines operation at industry and the fulfillment of requirements according to the EC directive of machinery.