Reports until 17:52, Monday 12 October 2015
H1 ISC (DetChar, SEI)
jeffrey.kissel@LIGO.ORG - posted 17:52, Monday 12 October 2015 (22448)
Lock Acquisition Troubles from Today
J. Kissel for the people actually doing the work: 
S. Dwyer, K. Izumi, N. Kijbunchoo, T. Schaffer

A couple of problems, compounded with the high wind and microseism have made lock acquaisiton difficult today. Kiwmau and Shiela are still working on the last two I mention, and will likely aLOG details later:
- The initial alignment was poor, as identified by a few lock losses that had too low a REFL power too soon so we ran through initial alignment.
- During initial alignment, we found that the X-ARM's IR loop had too low a gain margin (see LHO aLOG 22443), for which a permanent solution will be tried tomorrow.
- Once we finally got to DC READOUT, we found that all of the SOFT loops were difficult at best to close (that's the status now, again Shiela will aLOG more later)
- Also, the ISS 2ND loop has become difficult to turn on (again, current status, Kiwamu's working on diagnosing)

And again, on top of this the microseism has been at ~0.3 [um/s], and wind had gusted up to ~20 [mph] for a few hours in the early afternoon.

Stay tuned.