TITLE: 01/15 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: None
SHIFT SUMMARY:
Busy Busy Maintenance Day!
LOG:
- HAM2 rails & HAM6 cleanroom already rolled
- Contractors: portapotties
- Early-16:53: FSS work (Peter King)
- 15:35 Kissel arrives
- 15:40: Cleaning started Karen (EY) & Vanessa (EX) to out buildings
- ~15:40 ISI config taken to SC_OFF_NOBRSXY (JeffK)
- 15:45 Corey arrives
- 15:45 Richard to CER & PSL to help PeterK
- 15:50-17:00 SEI PROC & corner boots (JeffK, Jim)
- 15:51 VAC walk-thru (Chandra)
- 16:09-18:40 EY PCal meas (Rick, Niko, Dmitri)
- Transitioning to HAZARD AT EY
- 16:50 Niko & Dmitri joining
- 16:08 Cara out to help, if needed, in LVEA
- 16:14 Betsy & Christina out to LVEA
- 16:18 SEI proc & SEI corner reboot (jk, jw)
- 16:16 TCSy Chiller swap. TCSy laser OFF (tj)
- 17:09 swapped! & confirmed OK at 17:23.
- 16:30 Fire Dept testing x-arm building (most likely MX)
- 16:36-19:15 IO Mirror damping start (Robert, Cheryl)
- 16:39 - 20:44 removing HV power supplies at HAM6 to do EX ground checks (fil, ed)
- Ed replaced HAM6 HV power supplies fil removed for EX
- 19:20 Ed, Deisy, Stevie joining
- ESD on temporary power, awaiting check from Robert.
- 17:00-17:40 ISCT6 parts (Nutsinee)
- 17:15-19:31 MX, EX safety walk-thru (Chandra)
- 17:10-17:20 CAL EX model work (Jamie, JeffK)
- 17:18-18:40 EY laser HAZARD!
- 17:35 -19:44 SRM set-up work (Danny, TVo)
- 17:35-18:30 Barriers for East Bay (Betsy, Travis)
- 17:39-20:00 rack noise hunting (Dick, Marc)
- 18:06 accelerometer cable check (Ed)
- 18:44 - 21:00 EY HWS beam align (Danny)
- 19:48 TJ joining
- ~21:00 EY Transitioned to SAFE
- 18:45 LVEA HAZARD! (tj)
- 19:00 EY back to HAZARD (danny)
- 19:15-19:25 IO PSL component loose on table (Cheryl)
- 19:34-20:00 PEM Inventory check for non-table (Kara)
- mid-morning Cal EX, EY model work for ODC (Jamie)
- mid-morning ASC ODC work (Keita, Jenne)
- 20:45-20:49 Single-bounce measurements for SQZ (Sheila)
- 21:20 Starting Init Align
- 21:52 EX & EY need to remove gps clocks (Timing crew)
- 22:13 EY trip for:
- Plugging in phone (Ed)
- Transition to Hazard (Ed)
- Check ISCTEY for why WFSB has no light on it. (Jenne, JeffK)
- Found cables in beam path (Jeff took photos).
- 22:43 Transition to SAFE (Ed)
- 0:00 H1 is being taken to NOMINAL_LOW_NOISE (so far it is currently at PREP_ASC). Handing off to Jeff K.
- Note: OMC didn't lock on first attempt, but Jenne & Jeff are addressing this at the PREP_DC_READOUT step......
Post-Michelson Locking NOTES:
1) Diag_Main gave us an Xarm polarization above 20% message----> TJ took it down to 17 via remote medm screen
2) Trying TJ's new guardian INIT_ALIGN node
INIT_ALIGN Guardian notes:
- Currently one might be able to take it all the way to MICH_DARK_ALIGNING, and then tweak the BS, and go MANUAL to SRC_ALIGNING & continue on....
- by going MANUAL to SRC_ALIGNING (& then finish off with INIT_ALIGN_COMPLETE
But for today's attempt, it didn't lock a DARK michelson. So went through usual exercise of going DOWN---ultimately determined we needed to go DOWN with ALIGN_IFO. Tweaked BS & then took INIT_ALIGN to SRC_ALIGN (via MANUAL command), but the SRC was pretty misaligned & so guardian was stuck in a loop.
So old school manual fix for misaligned SRC is (Jenne, JeffK):
- Go to DOWN with ALIGN_IFO
- Misalign SRM
- Look at AS_C centering & center this spot via SR2
- Once AS_C looks centered, go back to SRC_ALIGN with ALIGN_IFO.