Virgo Logbook

Reports 1-1 of 1

On-call intervention (General)

bulten - 15:01 Tuesday 28 April 2026 (69045)

EIB rebalancing

After todays work and rebalancing of the external injection bench, on request I used to microsprings to center the bench horizontally (and vertically; Tx was 60 microrads off). The bench is controlled with small offsets (all < 1V except for actuator 3 that is at 2.2 V. The max range is 20V so we are well inside safe operation range).

Comments to this report:

melo, spinicelli - 15:22 Tuesday 28 April 2026 (69046)

Before the intervention of Henk Jan, we tried to rebalance the bench moving some weights on the bench and adding some more (around 3kgs). We had also to take off some weights of under the bench (5kg) in the upper right side of EIB (corner near SIB2 in SIB1 direction). At the end it was not possible to rebalance only with the weights and we asked for the expert intervention.