Displaying reports 60001-60020 of 83146.Go to page Start 2997 2998 2999 3000 3001 3002 3003 3004 3005 End
Reports until 15:58, Friday 27 November 2015
LHO General
patrick.thomas@LIGO.ORG - posted 15:58, Friday 27 November 2015 - last comment - 16:41, Friday 27 November 2015(23767)
Ops DAY End Shift Summary
TITLE: 11/27 [DAY Shift]: 16:00-00:00 UTC (08:00-16:00 PDT), all times posted in UTC

STATE Of H1: Trying to lock DRMI
SHIFT SUMMARY: Lost lock for unknown reason. Trouble relocking. Started initial alignment. Earthquake hit. Finished initial alignment. Trying to lock DRMI.
INCOMING OPERATOR: Cheryl
ACTIVITY LOG:

Lock loss
Got 'Align SR3 to offload M2 actuators' notification from SR3_CAGE_SERVO guardian.
M2 Test around 12000 in Pitch. Moved optic align in Pitch from 555.4 to 558.4 to bring M2 Test to around -5900.

Trouble locking ALS. Had to move TMSY mostly in PITCH.
Trouble locking X arm on green.
Cleared end X WFS history.
WFS seem to drive power down.
Went to LOCKED_NO_SLOW_NO_WFS.
Took ALS_XARM guardian to Auto.
Went to LOCKED_NO_SLOW_NO_WFS.
Using ETMX and TSMX was able to bring power in X arm to around .9.
Went to LOCKED_SLOW_W_ETM_WFS, lock loss, power in both arms dropped.
Took ISC_LOCK to INIT.
Moved ETMY in YAW.
Moved ETMX in PITCH.
Moved TMSX some, but didn't help.
Power in X arm is around .9. Power in Y arm is around 1.06. Going to CHECK_IR.

ALS-COMM guardian: brief 'alignment is bad not searching' notification, finally 'search for IR resonance by hand'.
ALS DIFF guardian: request and state is still on LOCKED. Something isn't right.

Starting initial alignment. May be faster in the long run.
ALS_X and ALS_Y have both reached INITIAL_ALIGNMENT state, but X arm power is oscillating around .8.
Let ASC loops converge for ~ 30 min. The ITMS were far off.
Offloaded green WFS.
COMM beatnote is oscillating < 2.
Noticed earthquake.

Waited long time for earthquake, it isn't completely settled, but will try moving on
Aligning PR3 to increase COMM beatnote
That worked very well, increased to almost 5
MICH_DARK_LOCKED did not work, the two beams oscillated further and further away from each other
Going back to input align
Input align is not locking
Trying MICH dark locked again
This time the beams converged
SRCY is not locking
Got H1:LSC-ASAIR_A_LF_OUTPUT to ~ 800 by moving SRM mostly in YAW
Finished initial alignment

Moved ETMY in PITCH and YAW to lock ALS
ALS DIFF: search for IR resonance by hand
Briefly locked DRMI, lost lock, went to down
ALS DIFF: search for IR resonance by hand
Back to trying to lock DRMI
Comments related to this report
patrick.thomas@LIGO.ORG - 16:10, Friday 27 November 2015 (23768)
Locked on PRMI, aligned BS and PRM, transition to DRMI failed, attempting to lock DRMI
patrick.thomas@LIGO.ORG - 16:41, Friday 27 November 2015 (23769)
Locked at NLN. Had the engage ISS second loop by hand.
H1 DetChar (DetChar)
beverly.berger@LIGO.ORG - posted 15:05, Friday 27 November 2015 (23766)
DQ Shift for 23 - 25 November 2015
For further details see the complete report here.
LHO General
patrick.thomas@LIGO.ORG - posted 13:36, Friday 27 November 2015 - last comment - 14:06, Friday 27 November 2015(23761)
Earthquake
6.2
69km NNW of Taltal, Chile
2015-11-27 21:00:21 UTC 28.9 km deep
Comments related to this report
patrick.thomas@LIGO.ORG - 13:40, Friday 27 November 2015 (23762)
Peaked around 0.5 um/s in 0.03 - 0.1 Hz band.
patrick.thomas@LIGO.ORG - 14:05, Friday 27 November 2015 (23763)
Updated to:

6.2
66km NNW of Taltal, Chile
2015-11-27 21:00:22 UTC 35.0 km deep
patrick.thomas@LIGO.ORG - 14:06, Friday 27 November 2015 (23764)
Another:

5.0
68km NNW of Taltal, Chile
2015-11-27 21:45:12 UTC 45.3 km deep
H1 General
patrick.thomas@LIGO.ORG - posted 12:01, Friday 27 November 2015 (23760)
Lockloss
No clear cause. Nothing in seismic bands.
LHO General
patrick.thomas@LIGO.ORG - posted 08:07, Friday 27 November 2015 (23759)
Ops DAY Beginning Shift Summary
TITLE: 11/27 [DAY Shift]: 16:00-00:00 UTC (08:00-16:00 PDT), all times posted in UTC

STATE Of H1: Observing @ ~ 78 MPc.
OUTGOING OPERATOR: Ed
QUICK SUMMARY: 
From the cameras:
The lights are off in the LVEA.
The lights are off in the PSL enclosure.
The lights are off at mid X.
I can not tell if the lights are on or off at mid Y.
The lights are off at end X.
The lights are off at end Y.

The 0.03 - 0.1 Hz (earthquake) seismic band is between ~ 0.01 and 0.04 um/s.
The 0.1 - 0.3 Hz (microseism) seismic band is between ~ 0.1 and 0.4 um/s.

The winds are between ~ 0 and 5 mph.

The ISI blends are on Quite_90.

From pinging:
CDS WAP is off at the LVEA.
CDS WAP is on at mid X.
CDS WAP is on at mid Y.
CDS WAP is off at end X.
CDS WAP is off at end Y.
H1 General
edmond.merilh@LIGO.ORG - posted 07:51, Friday 27 November 2015 (23758)
Shift Summary - OWL

TITLE:    Nov 27 OWL Shift 08:00-16:00UTC (00:00-08:00 PDT), all times posted in UTC

STATE Of H1: Observing

SUPPORT: N/A

LOCK DURATION: 8hrs

INCOMING OPERATOR: Patrick

SHIFT SUMMARY: Locked at 80Mpc+. A few ETMY glitches. 45MhzRFAM is nice and normal. Winds are still calm. Seismic activity is relatively quiet. Handing off to Patrick.

LHO FMCS
john.worden@LIGO.ORG - posted 07:02, Friday 27 November 2015 (23757)
XEND temperature.

I have incremented the heat at XEND. The HC3 control signal has been increased from 13.5 to 14.5 ma.

Outside temperatures shown in plot.

Images attached to this report
H1 General
edmond.merilh@LIGO.ORG - posted 04:19, Friday 27 November 2015 - last comment - 04:25, Friday 27 November 2015(23754)
Mid-Shift Summary - OWL

MID-SHIFT SUMMARY: Locked at 80Mpc+. A few ETMY glitches. 45MhzRFAM is nice and normal. Winds are still calm. We rode out an earthquake from the Burma are and are currently facing a possible 1µm/s wave from an El Salvadoran quake. THere was an FMCS alarm that I logged and sent an e-mail to Bubba about. It looks as if there was a change made to the temp in the CS yesterday at some point around 12:00UTC and the alarm threshold for this is set rather tightly. Livingston remains down since 09:46UTC.

Comments related to this report
edmond.merilh@LIGO.ORG - 04:25, Friday 27 November 2015 (23755)

It looks like the eq band surged to only .35um/s and we rode this one out. whew! 

H1 General
edmond.merilh@LIGO.ORG - posted 03:35, Friday 27 November 2015 - last comment - 06:44, Friday 27 November 2015(23753)
Critical Air Handler Alarm

Critical Alarm at 11:15 for H0:FMC-CS_LVEA_REHEAT_2B_DEGF. Attached trend show past 24 hours for this channel. I'm not entirely sure how long this alarm has been present. Also attached is a screenshot of the current CS FMCS. I noticed the aLog regarding the temp increase at Y end . I have not yet found one regarding the corner station.

Images attached to this report
Comments related to this report
john.worden@LIGO.ORG - 06:44, Friday 27 November 2015 (23756)

Thanks Ed,

Bubba and I are aware of these alarms and are working on the issue. These should probably not be flagged as "critical" as they are duct heater temperatures and a temperature of 100F is not unusual for these.

Our reduced fan flow rates are contributing to the increased temperatures in the ducts.

 

 

H1 General
edmond.merilh@LIGO.ORG - posted 01:15, Friday 27 November 2015 - last comment - 02:16, Friday 27 November 2015(23751)
GRB Alert

09:10UTC. IFO is locked and in nominal observing state. Terramon is reporting and incoming R-Wave of .5µm/s in ≈15min. Livingston didn't answer the hail. I'll try again.

Comments related to this report
edmond.merilh@LIGO.ORG - 02:16, Friday 27 November 2015 (23752)

Spoke with Danny at Livingston. They got the alert. They also lost lock shortly after.

H1 AOS
jim.warner@LIGO.ORG - posted 00:11, Friday 27 November 2015 (23750)
Shift Summary
TITLE: 11/26 [EVE Shift]: 0:00-8:00 UTC 

STATE Of H1: Observing @ ~ 75 MPc.
SHIFT SUMMARY: Lost lock at 5:30 UTC, initial alignment was tough, CARM reduction is rough
SUPPORT: 
ACTIVITY LOG:

5:30 Lockloss, I let Guardian try to relock, but DRMI cavity flashes are poor and worse when I try to get PRMI, so I start initial alignment. X-arm IR is difficult, refuses to lock and MC drops lock frequently. After Input align, the rest goes ok. Relocking goes pretty average. CARM reduction was a sore point, as usual.
8:00 NLN right as Ed arrives


H1 General
edmond.merilh@LIGO.ORG - posted 00:08, Friday 27 November 2015 (23749)
Shift Summary - OWL Transition

TITLE: Nov 27 OWL Shift 08:00-16:00UTC (00:00-08:00 PDT)

STATE Of H1: Observing

OUTGOING OPERATOR: Jim

QUICK SUMMARY: IFO is locked at NLN and Observing @ 80 Mpc. Seismic environment is quiet. Wind is quiet. Looking good to me.

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