Below the list of the activities carried out during this shift:

• standard maintenance activities for vacuum and cleaning operation;
• grass cutting;
• DAQ
• SVS - alignment recovery on squeezer box (de Laurentis)
• test on PDUServer

At around 10:30 UTC all the maintenance activitied were concluded.

At around 10:46 UTC the NI suspensions started to oscillate for unknown reason; at 11:26 UTC I opened all the loops and I contacted Paolo who started to investigate the problem. He discovered a similar problem to NI ACC1 gain changed; he was able to close the loops but a deeper investigation will be needed.

At 13:05 ITF in NI single bounce to allow DET people to tune the OMC phases.

SUSP

IB FO COIL H1 and H3 reset by Paolo.

DET

at 8:11 UTC I performed the scan of the OMC; before I had a problem with the DET_MAIN node ( 60282 ).

OSD

Calibrations: 6:10 UTC CITF; 6:36 UTC NI single bounce; 7:01 UTC WI single bounce.

SBE

• SIB2 opened by the guardian; vertical position recovered and loop closed at 7:28 UTC.
• the EIB act0 - Actuator driver is  out of optimal range; experts informed by mail.