Displaying reports 57321-57340 of 83146.Go to page Start 2863 2864 2865 2866 2867 2868 2869 2870 2871 End
Reports until 03:09, Tuesday 12 April 2016
H1 PSL (PSL)
peter.king@LIGO.ORG - posted 03:09, Tuesday 12 April 2016 - last comment - 03:41, Tuesday 12 April 2016(26537)
PSL work
Transfer functions of the injection locking servo electronics were taken.
The previous measurements from when the PSL underwent acceptance testing
are posted in the DCC under
  https://dcc.ligo.org/DocDB/0100/E1300129/001/tf.pdf
That result listed the unity gain and phase margin as being 2.8 kHz and
57 degrees respectively.

With the previous setting of gain = -1.50V, the unity gain is ~8.5 kHz
with about 40 degrees of phase margin.  Setting the gain to -1.70V, upped
the unity gain to ~10 kHz.  This is consistent with the acceptance test
result from L1, which is in the DCC under
  https://dcc.ligo.org/DocDB/0068/E1100716/006/injection_locking_tf.pdf

Also attached is the oscilloscope image of the injection locking error
signal.



Jason, Peter
Images attached to this report
Comments related to this report
peter.king@LIGO.ORG - 03:41, Tuesday 12 April 2016 (26539)
Attached are spectra of the injection locking servo mixer monitor and
high voltage monitor output.
Images attached to this comment
H1 CAL (CAL)
craig.cahillane@LIGO.ORG - posted 22:10, Monday 11 April 2016 (26535)
All of O1 LHO Systematic Error Spectrogram
C. Cahillane

I have generated a C01 and C02 calibration systematic error spectrogram for all of O1.

The spectrogram takes the calibration from every day of O1. The frequency vector goes from 5 to 3000 Hz.
These plots are preliminary because my veto definer files do not veto all bad times, so I still have to hack together some vetoes of my own.  This is mostly a concern for the LHO C01 plots.  This will be resolved ASAP.

The plots have dashed blue lines at Sep 14 2015, Oct 11 2015, and Dec 26 2015.
For reference I have included LHO Dec 26 Uncertainty Budgets for both C01 and C02.  These should correspond to the third dashed blue line in the spectrogram.

Next, once the vetoes are properly applied, I will post revamped systematic error spectrograms alongside Total O1 Uncertainty Budgets.  Without the correct vetoes my Total O1 Budgets are not yet useful.

For the LLO All of O1 Calibration Spectrograms, please see LLO aLOG 25618
Non-image files attached to this report
H1 General
nutsinee.kijbunchoo@LIGO.ORG - posted 22:08, Monday 11 April 2016 (26536)
Ops EVE shift summary

Log:

01:30 Evan and Craig back from EY

~09:00 Japanese film crew came back to report that they left two cameras on the hill along the Y arm between "4th and 5th door" (door counting from corner station). That's somewhere between corner station and mid Y.

LHO VE
kyle.ryan@LIGO.ORG - posted 17:22, Monday 11 April 2016 (26534)
Progress on annulus ion pumps
Kyle, Gerardo, Chandra

Received HV pump cables and custom length power cords that had been ordered last week -> HAM7, BSC4 and HAM12 annulus pumps started today -> pump carts moved from HAM9 to HAM8 and BSC4 to HAM6. 

Gerardo
Routed and terminated CDS signal cables to HAM7 and HAM12 annulus ion pump controllers

Kyle 
Pumping HAM5/HAM6 annulus volume with pump carts at each pump port -> Energized HAM5 and HAM6 ion pump controllers

LHO VE
chandra.romel@LIGO.ORG - posted 16:51, Monday 11 April 2016 - last comment - 09:28, Tuesday 12 April 2016(26533)
GV 5 & 7 open
Kyle, Chandra

Opened valves that were soft closed a week ago. 
GV 7 needed 40 psig. GV 5 needed 45 psig to open. 

Attached is plot of pressures on either side of each valve before and after opening. Before we realized to pump the gate annulus after a week, we had already set pressure against pistons to 20 psig, shifting gate slightly and releasing annulus gas into beam tube.

Images attached to this report
Comments related to this report
kyle.ryan@LIGO.ORG - 09:28, Tuesday 12 April 2016 (26546)

The take away from this observation is that O-rings of GV5 and GV7 must have been in full contact with their sealing surface whilst soft-closed, i.e with 5 - 10 psi applied to the top of their pistons.  This is as intended.  Had they not been in full contact, the gate annulus volumes would have been pumped by the adjacent vacuum volume(s) and no gas release would have occurred when the gates where stroked open.  Typically we would have "burped" the un-pumped gate annulus volume into the rest of the annulus piping before opening the gate valves.  

In summary, soft-closing GV5 and GV7 does provide protection to the Beam Tubes.
H1 CDS (CDS, VE)
patrick.thomas@LIGO.ORG - posted 16:38, Monday 11 April 2016 (26532)
medm screens for controlling HAM1 and HAM6 cold cathode gauges updated
John, Patrick, Richard

The EPICS state code that controls the enabling and disabling of the cold cathode gauges was not installed for the gauges that got added to HAM1 and HAM6 (PT100 and PT110). However, the on/off toggle buttons on the medm screens for these gauges were writing to the state code request channels. This is why toggling these buttons had no effect. I updated the H0VE_LX_Y0.adl and H0VE_LY_X0.adl medm screens to use the channels that output directly to hardware instead of the state code request channels:

request channel        hardware channel
HVE-LY:X0_HSCCONOFF -> HVE-LY:X0_HS100
HVE-LX:Y0_HSCCONOFF -> HVE-LX:Y0_HS110
LHO VE
chandra.romel@LIGO.ORG - posted 16:15, Monday 11 April 2016 (26530)
HAM6 pump down
Kyle, Chandra

Pumped down HAM6 from atmosphere to 0.5 Torr in 3 hrs. 
Turned turbo pump ON. It tripped once (overload) after many minutes of spinning up. 
Restarted turbo; it came up to speed in normal time. It felt hot to the touch so we placed a fan near it.

Current HAM6 pressure = 4.5e-5 Torr 
LHO General (OpsInfo)
corey.gray@LIGO.ORG - posted 16:04, Monday 11 April 2016 - last comment - 16:17, Monday 11 April 2016(26517)
DAY Ops Summary

Day's Activities:

Comments related to this report
thomas.shaffer@LIGO.ORG - 16:17, Monday 11 April 2016 (26531)

"Operator note:  One can tell if Beckhoff goes down by looking at the Slow Controls section on the CDS Overview....if anything is frozen, it's not running."

As a reminder, the DIAG_MAIN has a test to look for exactly that. Though, it has become saturated and lit up from all of the vent and PSL work going on.

LHO VE
kyle.ryan@LIGO.ORG - posted 15:56, Monday 11 April 2016 (26529)
Manually over-filled CP3
1535 -1350 hrs. local -> To and from Y-mid 

Exhaust check valve bypass opened, LLCV bypass opened 1/2 turn ccw -> LN2 at exhaust in 2 mins 10 secs. (Restored valves to as found)

Next CP3 over-fill to be in < 72 hours.
H1 PEM (CDS)
james.batch@LIGO.ORG - posted 13:42, Monday 11 April 2016 (26528)
ADC channels activated in h1pemex model
End X PEM ADC 0 channels 8-13 (starting from 0) have been activated for a PEM test. These channels are already in the science and commissioning frames as H1:PEM-EX_ADC_0_08_OUT_DQ through H1:PEM-EX_ADC_0_13_OUT_DQ at a sample rate of 2048. Until this afternoon, the values were fixed at 0.
H1 PEM (DetChar)
keith.riles@LIGO.ORG - posted 12:42, Monday 11 April 2016 (26527)
Folding of additional H1 corner station magnetometer channels
At Bryn Pearlstone's suggestion, Weigang Liu has tried folding data
daily/monthly/O1ly from corner station magnetometer channels
beyond the ones reported on previously, where as before, 
data from October 20 (day of unplanned power outage) has been excluded. 

Attached are the summary plots, while links to the daily & monthly plots are here:

H1:PEM−CS_MAG_EBAY_LSCRACK_X_DQ
H1:PEM−CS_MAG_EBAY_LSCRACK_Y_DQ
H1:PEM−CS_MAG_EBAY_LSCRACK_Z_DQ

As before, each figure has a top graph with the raw folded (averaged) data,
a middle graph with the spectrum of the folded data, and a bottom graph
which is the inverse FFT of the lowest 40 Hz. 

These graphs are qualitatively similar to those seen before for some CS magnetometer channels
in that there is a 2-second periodicity with a positive excursion at a 1-second boundary, followed by
a negative excursion at the next 1-second boundary, and there is additional fine structure,
most notably an extra transient seen at the 0.25-second mark in successive 
1-second intervals. In addition, the X channel shows a transient at the 0.5-second mark
of each second, and the Z channel here seems most different in character from
previously examined magnetometer channels. These fine structures are seen throughout O1.


Images attached to this report
H1 AOS (AOS, SEI, SUS)
corey.gray@LIGO.ORG - posted 11:48, Monday 11 April 2016 (26526)
Optical Lever 7 Day Trends

The FAMIS procedure notes the normal operating range for the oplevs is +/- 10urad (but some can still operate normally beyond this).  I'm assuming the count values in dataviewer are in urad.  Attached are the pit, yaw, & sum 7-day trends.

Notes:

This closes out FAMIS #4670.

Non-image files attached to this report
LHO VE
kyle.ryan@LIGO.ORG - posted 11:41, Monday 11 April 2016 (26525)
1135 hrs. local -> Valved-out Diagonal Turbo


			
			
LHO VE
chandra.romel@LIGO.ORG - posted 11:04, Monday 11 April 2016 (26524)
HAM6 pump down
Kyle, Chandra

Started rough pump down of HAM6 at 10:48am local time. Dew point of blow down measured -20degC. 
H1 ISC (ISC)
jenne.driggers@LIGO.ORG - posted 10:22, Monday 11 April 2016 - last comment - 14:47, Tuesday 12 April 2016(26521)
Terminated LO inputs of AS 90 WFS

I have terminated the LO inputs to the AS 90 WFS chassis (as well as the cables that normally go to these ports), so that we can see if the dark offsets are more stable without the triplexer.  Later today, I'll swap the terminators to be at the front of the triplexer box, to see if that changes things.

Comments related to this report
jenne.driggers@LIGO.ORG - 14:47, Tuesday 12 April 2016 (26553)

I have reverted this back to its nominal configuration.  It looks like the signals got much cleaner on 9Apr, around 10UTC, so I want to see if they are still clean after going back to the nominal config.  I can't find any cables that seemed bumped or out of place from the vacuum team's work, although they were working in the HAM6 area on both Thursday and Friday last week.

LHO General
corey.gray@LIGO.ORG - posted 10:08, Monday 11 April 2016 (26520)
Monday Morning 8:30 Meeting Notes

MONDAY MEETING:

General Announcement:  It's always best to provide data in alogs.  If you have a long entry, perhaps the bulk of this should be entered as a document in the DCC. (Vern)

SEI:  All vibration absorbers installed, and B&K measurements look good!  ISC (i.e. Evan) tested ISC items such as shutters. (Jim)

PSL:  Summary given for work from last week and HPO work continues this week. (Jason)

VAC:  5pm fri & doors on.  GV5&7 opening hopefully this afternoon (Chandra)

Miscellaneous:  

COMMISSIONING MEETING

H1 CDS
patrick.thomas@LIGO.ORG - posted 10:06, Monday 11 April 2016 - last comment - 10:42, Monday 11 April 2016(26519)
h1ecatx1 IOC crashed
Jim B. notified me that the uptime for all of the PLCs on h1ecatx1 stopped updating last Thursday. Their time on the CDS overview is frozen at 7 2 45 1 (D HH MM SS). Logging on to h1ecatx1 it appears that the IOC has crashed (screenshot attached).
Images attached to this report
Comments related to this report
patrick.thomas@LIGO.ORG - 10:26, Monday 11 April 2016 (26522)
Daniel restarted the IOC and it came back. I burtrestored to 6:10 local time this morning. Cause of error not yet determined.
patrick.thomas@LIGO.ORG - 10:42, Monday 11 April 2016 (26523)
FRS 5270 created.
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