TITLE: 12/28 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Aligning
INCOMING OPERATOR: Oli
SHIFT SUMMARY:
Today's extremely high microseism has made it very difficult to lock all day due to a storm off of our western coast.
A few earthquakes are coming in making the problem worse.
I started another Initial alignment while an earthquake rolled through.
Everytime I get to MAX_POWER there is a lockloss.
So I have been trying to pause in Check_VIOLINS, so I can damp the ITMY before moving up to MAX_POWER.
H1 has just gotten up to Check Violins before power up. I have decided to try a violin setting of FM6 + FM10 at gain of -0.1 on ITMY Mode 5
This setting was found in the VIOLINS google doc, but it has actually made the ITMY mode 5 worse for the short time that I was watching it.
ITMY is by far the single largest Violin mode.
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 16:13 | VAC | Janos, Gerardo , Roger Mech | Mechanical | N | Vendor coming to work on Vac system | 20:13 |
| 17:28 | VAC | Gerardo | N2 Fill pipe | N | Chipping Ice off the overflow spout | 20:25 |