摘要
The copper model CH cavity was designed and fabricated at IMP for Injector II of CIADS project operating atfrequency 162.5 MHz, =0.065[1]. To research the electromagnetic mode evaluated by the electric field distributionand the tuning properties of the CH cavity the bead-pull and tuning test device was set up. It included two parts,the beadpull mode and the tuning test mode. A brief description of the equipment design is shown in Fig.
