Construction process of ESS medium beta 6-cell cavities in INFN-LASA & Investigation of HOM Frequency Shifts Induced by Mechanical Tolerances

by Mr Saeid Pirani (Lund University and ESS)

Friday 16 Jun 2017, 11:00 → 11:45 Europe/Stockholm

H422 (Fysiska institutionen-Physics Department)

In the first part, presentation will cover steps passed for 1st prototype fabrication of ESS Medium-Beta cavity in INFN-LASA as well as measurement results. In the second part it will cover Higher Order Mode (HOM) studies on ESS Medium-Beta cavity, designed in INFN-LASA, including both simulation and measurement results. Mechanical tolerances of the fabrication process might shift HOMs frequencies toward harmonics of the bunch frequency. Both simulation and measurements at room and cryogenic temperature show that the design is fully compatible to requirements.