After properly recovering EIB after the incident of Friday afternoon (#69582), we attempted to close the BPC loop, but the BsX_PZT_UH correction was too large and the loop was unable to close, as the control action was continuously driven away. We therefore discharged the DSP-card integrators and adjusted the BPC setpoints to keep the beam approximately aligned on the Mode Cleaner.

Since the resulting alignment was not optimal, the following actions were performed, with only the BPC loop closed:

• The corrections of the BPL loop on ACL were adjusted to maintain the rough beam position.
• The Automatic Alignment loop was closed.
• The SIB1 bench TY setpoint was slightly adjusted to compensate for the changes introduced by the BPC loop, particularly on TY.
• The BPC setpoints were gradually brought back towards their original values while monitoring the corrections to prevent saturation.
• We attempted to bring all BPL setpoints back to 0. However, the X setpoint was kept at -100 µm, as setting it to 0 resulted in excessively large BPC UH corrections (approximately -6 V).
• The MAR_TY bench setpoint was returned to its original value, as otherwise the BPC X and TY corrections were not properly centered.

After these adjustments, all loops could be successfully closed at full bandwidth, including the RFC loop.

Some notes:

1. while steering the corrections of the BPL loop we noticed that changes we made on the TX and TY were making effect on X and Y because of a copy-paste error on the ACL code and we fixed it. Now all DoFs correspond to their respective corrections. 

2. The BPL loop was closed after the BPC, this was probably the cause of the bad alignment we had on the BPC and probably the reason why it could not close on the nominal setpoint to begin with. Therefore, it should be the first loop to be closed (for future reference).