RP MEASUREMENTS ON A TE(011) YBCO CAVITY AT 8 GHZ

In the present work a cavity fully coated with an YBCO thick film was fabricated using an improved electrophoretic deposition technology wit h a special attempt to avoid the possible contamination of the superco nducting powder during the milling process in the suspension preparati on. A microwave experimental set-up was constructed to measure the rf behavior of the cavity in a wide temperature range. The loaded quality factor Q(1) and the shift of the resonant frequency vs. the temperatu re at various rf magnetic fields have been measured. Furthermore, the surface resistance and the penetration depth determined from the measu rements were compared with the numerical calculation in the framework of BCS theory, showing good agreement with the theoretical predictions .