This morning we realized that the name of  two channels of the episensor placed on the Laser Bench are not in agreement with naming convention. The same happen for the single axis episensor placed on the south-flange of SIB1.

To solve this problem:

- the channels: ENV_LS_SEIS_X and ENV_LB_SEIS_Z were exchanged;

- the channel ENV_IB_SEIS_Z was changed to ENV_IB_SEIS_X.

In figure 1 the coherence between the horizontal channels of the episensors placed on Laser Bench and External Injection Bench are compared before and after the change. The coherences of the sensor on the flange, with both ther sensors on the benches, before (figure 2) and after (figure 3) the change .are also reported.