First AES Single-Cell 1.3 GHz Cavity Achieves 27.8 MV/m in Testing at Cornell

The first AES single-cell 1.3 GHz cavity (TE1AES001) was tested November 18 at Cornell University. Preparation included 110 micron inner surface removal via buffered chemical polishing (BCP) followed by high-pressure rinse and assembly. The low field Q was approximately 2e10. The cavity reached a maximum accelerating gradient of 27.8 MV/m with mild field emission prior to quench. There was some evidence of multipacting at ~8.5 MV/m. The cavity was tested at 2K.

Click here to see the result of the Q-Eacc for TE1AES001.

Text Credit: Mark Champion, Fermilab