At the moment, the ITF is unlocked, the PR mirror is misaligned (as usual), the BS and NI mirrors are aligned (as usual), but the NE/WI/WE are misaligned, to allow the Friday afternoon shift. Here are the Automation instructions for the following activities: keep an eye on the DMS just in case.
What to do after the Friday afternoon shift: realign the arm cavities, and relock tthe arm cavities: all Metatron nodes but the following should be ignored;
- leave ITF_LOCK in PAUSE; because of this, you can ignore the managed/unmanaged status of every other node you are going to drive;
- leave INJ_MAIN as it is: the Injection system is standalone, no FmodErr tuning will be performed (it is disabled), it will recover itself in case of unlock of the IMC;
- CARM_DARM_LOCK: now it is in the MISALIGNED_ALL_BUT_NI state; bring it to DOWN, then ask for LOCKED_ARMS; when the arms are locked, wait for a few minutes until the arm cavity powers are stable (B7_DC ~ 0.38 mW, B8_DC ~ 0.35 mW); after this, ask again for the DOWN state;
- if you cannot see flashes on B7 and B8 DC (>= 0.1 mW), make sure that the shutters of B7_PD1 and B8_PD1 are opened from the VPM (they should); in case they are not, click on the "gear" near the SNEB_dbox_bench and SWEB_dbox_bench processes titles, then click the "gear" on the MezzPD section, Rearm, then Open);
- if you still cannot see the flashes, give up and go to DOWN; alignment will not be perfect on Monday, but the Saturday shift will be unaffected; however, please check (just from the VPM) that all the Automation Suspension Nodes are "ALIGNED" except SUS_PR, which should be "MISALIGNED";
What to do after the Saturday morning shift:
- leave ITF_LOCK in PAUSE;
- leave INJ_MAIN as it is;
- CARM_DARM_LOCK: now it is in the DOWN state, ask for LOCKED_ARMS; everything else from the previous section still applies, but the TCS activity may have 'spoiled' the West Arm power; if it locks and the situation is similar to the last TCS activity, any steady power around ~ 0.1 mW should be enough; if the arms seems reasonably stable, leave them locked;
- if you still cannot see the flashes, give up and go to DOWN;