matthew.heintze@LIGO.ORG - posted 17:09, Thursday 22 February 2018 - last comment - 10:07, Friday 23 February 2018(40673)
70W progress Thurs 22
Maik, Jason, Matt
Semi frustrating day today. However we have:
- rewired the additional flow sensors and confirmed that they now readout.
- connected up the frankencable and the associated power meter and PD and confirmed that everything reads out in Beckhoff
- Hooked up the FE pickoff and confirmed it reads out in Beckhoff.
- We could not connect the pickoff into the FE, as at LHO, both EOM ports are currently "connected", which was not the case at AEI or LLO (we used the non-used EOM port for the installs at the other sites). We (Maik/I) need LHO PSL people to decide if both are being used or if one is just a bonus that we can actually use, or perhaps we can try to use the AOM port.
We also could not test the mechanism for the new external shutter, as the mechanism is currently just bare wires and so we need to get the pinout to wire up a connector (this wasnt the case at LLO as it already had the connectors wires)
And we are having the issues with the diode chiller that we still havent been able to rectify.
The new diode chiller could be run from local control with no apparent problems. However, it would not start from Beckhoff. It appeared to Beckhoff that the chiller was still on. Several things were tried but could not get the chiller to start from Beckhoff. This morning, the diode chiller controller from the old chiller(Gromit)was installed in the new chiller (Wallace). On power up, the diode chiller started without command input, which it should not do. We stopped and started both chiller from Beckhoff several times and both appear to be working correctly. I will contact the manufacture of the faulty controller for repair or replacement.