Michael and Yuhang

Yesterday, we finally aligned back filter cavity. During the recovery phase, we found the camera driver used for intra-arm second target is broken. We replaced it with a driver labelled with 'PRM surface'.(fig1,2,3)

We also found the motor C of END mirror picomotor is broken. This motor was used for adjusting END mirror pitch (fig.4). But we can use the motor B for pitch temporarily since these motors are just used for sending signals with particular IP address (fig.5). The signal to be sent to picomotor is decided by ourselves from LABVIEW.