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Panzeri, N.

Paper Title Page
MOPCH170 Experimental and Theoretical Analysis of the Tesla-like SRF Cavity Flanges 463
 
  • L. Monaco, P. Michelato, C. Pagani, N. Panzeri
    INFN/LASA, Segrate (MI)
 
  In view of the future large SC accelerator, an improvement of the reliability and a cost reduction of the SRF cavities cold flanges is required. In this paper, a critical analysis of the TESLA-like cold connection flanges at room and at cryogenic temperature is presented. This analysis is based on experimental characterization of the mechanical properties of the joint and of the leak rates during the sealing process. A FEM model, that agrees with the experimental data, is also presented. This model is being used for the optimization of the present SRF flanges and the development of new cold connections.  
MOPCH171 ILC Coaxial Blade Tuner 466
 
  • C. Pagani, A. Bosotti, P. Michelato, N. Panzeri, R. Paparella, P. Pierini
    INFN/LASA, Segrate (MI)
 
  A coaxial (blade) tuner solution has been developed for the compensation of the Lorentz force detuning of the superconducting cavities under the high gradient pulsed operation foreseen for ILC operation. The device is based on prototypes successfully tested at DESY in 2002 both on CHECHIA and on the superstructures inserted in the TTF string. During both tests the blade tuner performed as expected in terms of stiffness, frequency sensitivity and tuning capabilities. An improvement of the tuner characteristics has been designed by the integration of fast tuning capabilities by means of piezo-ceramic element. Two prototipes of the new INFN coaxial piezo blade tuner have just been manufactured and they will be tested at DESY and BESSY after the cavity integration. In this paper the blade tuner design and main characteristics are presented, together with the early interpretation of the cold test results.