• Y.M. Pischalnikov, E. Borissov, T.N. Khabiboulline, L. Ristori, W. Schappert
  Fermilab, Batavia

Fermilab is developing 325 MHz SRF spoke cavities for the proposed High Intensity Neutrino Source. A compact fast/slow tuner has been developed to control Lorentz force detuning and compensate for liquid He pressure fluctuations. The design of a fast/slow tuner and a summary of results from warm tests of the tuner will be presented.

• J.H. Thie, A. Goessel, J. Iversen, D. Klinke, G. Kreps, W.-D. Möller, C. Mueller, D. Proch
  DESY, Hamburg
• R.H. Carcagno, T.N. Khabiboulline, S. Kotelnikov, A. Makulski, R. Nehring, J.M. Nogiec, M.C. Ross, W. Schappert
  Fermilab, Batavia

A semi-automatic cavity tuning machine is used at DESY since 15 years to tune the field flatness and concentricity of the TESLA shape 9 cell cavities for FLASH. Based on this experience a further development work was done in a collaboration effort among FNAL, DESY and KEK to support the high throughput cavity fabrication necessary for the European XFEL and other SRF based future projects. Two of the four machines will be delivered to and operated by the cavity vendors for the tuning of the XFEL cavities. We describe the mechanical design and functionality of these machines and discuss the safety aspects for the operation at the industry.

Poster