TITLE: 11/05 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 68.2743Mpc
INCOMING OPERATOR: Travis
SHIFT SUMMARY:
H1 locked most of the shift and getting back to NLN wasn't too tough (other than a Beam Diverter issue, which is noted below).
LOG:
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Bubba on-site checking for possible water leaks.
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16:17 Robert checking out REFL DC pd (thought he could break lock, but he did not.)
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16:53 Topped off PSL Chiller (Corey)
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17:37 Robert heading to End Stations for PEM Injections
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17:54 I forgot to drop us out of Undisturbed/Observing & we went to Commissioning at this time. Really, Commissioning should have been set at 16:17!
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Phone at EY not working
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19:09 Transitioning SEI to WINDY NO BRS X since Robert just arrived at EX. Have started receiving EX & EY saturations while I was on the phone with Robert and just after I made this transition. We are at hight useism (which is new). So yeah, it appears without the BRS & this high useism that H1 becomes pretty glitchy.
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NOTE: I forgot to turn off the BRS for Y when Robert was at EY! Did not receive any EX/EY saturations when he was down there.
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19:24 SEI Transistioned back to WINDY by Robert at EX.
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19:53 Went to UNDISTURBED/OBSERVING, but quickly un-did that because Robert said so.
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20:38 Lockloss. When coming back up, Diag_main mentioned X-arm fiber polarization above 20%
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Stuck in Locking ARMS Green with a "waiting for arms to settle". ALS X was stuck around 0.8...touched it up to 0.98 by tweaking the TMSX in yaw & this got us to move on.
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Sheila just happened to walk in and I mentioned this to her, and she said we should just change the value Guardian waits for here (0.9 something) since we have lowered the laser power.
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21:08 Sheila is now taking H1 to look at IMC WFS.
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22:42 - 22:46 Running A2L (...LHO.py)
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22:47 - Running A2L (...PR2.py)
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22:4 - Running A2L (...PR3.py)
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PI Mode 28 rung up. Took phase from 180 and eventually to 110 & it's looking good.
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Handing off a locked at NLN H1 to Travis (range is hovering around 73Mpc).
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Oh, we lost lock during acquisition earlier due to the Beam Diverters (this is related to what PDs we were using between acquisition & low noise). To get past this, I:
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went to NOISE_TUNINGS
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Go to MANUAL
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Select REDUCE_RF9_MODULATION_DEPTH (skipping Close Beam Diverters step)
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Then hit AUTO after the above step is green/complete
NOTE: Bubba would like a rough idea of # of people here between now and tomorrow. (we had 2-3 people most of the day)