TITLE: 06/12 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 133Mpc
SHIFT SUMMARY:
- Lock #1:
- Acquired NLN @ 21:40, observing @ 22:06
- EX saturation @ 23:16
- Lockloss @ 0:07
- Lock #2:
- ALS/IR was unaided but there was a lockloss when transitioning to DRMI from PRMI - failed twice, but caught the 3rd time
- Acquired NLN @ 1:29, OBSERVE @ 1:45
- PI 31 ringup @ 1:43 - guardian looks to have damped it
- Taken into Commissioning @ 1:55 due to TCS SDF changes - ss attached, eventually these changes reset on their own, back to Observing @ 1:57 - Tagging TCS
- Lockloss @ 4:35
- Had issues with ALS locking, so redoing an IA, during which it seems the X beatnote was poor again, so I reset the crystal frquency to get the beatnote to ~39 MHz, that seemed to have fixed the issue, rest of IA went fine
- Lock #3:
- Still having issues with the X beatnote, preventing me from locking ALS
- ALS X is going into fault reading PLL - looks like the the PLL lock would be green, the flash to red, then back to green very quickly on the PLL overview, but nothing is sticking out as being the cause of this
- After looking through some alogs, I used this log, and set the beatnote rf minimum to -15 to see if that would help things
- Looks like I can now get up to CHECK_IR, ALS_COMM found ok and ALS_DIFF was fine tuning before we lost lock again (both the COMM (-6) and DIFF (-6) beatnote were good)
- The second time around, again I set the beatnote rf minimum to -15 and was able to continue locking - Tagging ISC
- Acquired NLN @ 6:42, OBSERVE @ 6:53
- Leaving H1 to Ryan C. in observing
LOG:
| Start Time |
System |
Name |
Location |
Lazer_Haz |
Task |
Time End |
| 00:31 |
PCAL |
Tony |
PCAL Lab |
N |
Prep for PCAL measurement |
00:43 |