I adjusted the height of the SF and BF keystone so that the IM V1 OSEM could be in the linear range. Though the BF setpoint was changed by -1500, the IM V OSEMs were changed by only 176~275. The deviation of the BFD V (+910) was also inconsistent with the SF setpoint change (+1500).
| Before [um] | After [um] | |
| IM V1 | -461 | -186 |
| IM V2 | -271 | -95 |
| IM V3 | -254 | -24 |
| SF setpoint | -3000 | -1500 |
| BF setpoint | 862.8 | -637.2 |
| BFD V | 154 | 1064 |