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ID Date Authorup Type Category Subject
  9878   Wed Apr 30 11:16:41 2014 SteveUpdateIOOthis typical morning

c1sus and c1iscey were reset. The PMC needed to be locked. MC locked instantly.

The FSS ion pump power supply was turned on.

 

 

 

 

Attachment 1: 40days.png
40days.png
  9901   Fri May 2 08:38:07 2014 SteveUpdateIOOthis typical morning

 

 c1sus needed reset.

Attachment 1: 2dTrend.png
2dTrend.png
  9946   Tue May 13 13:27:58 2014 SteveSummarySUSOptical Lever Servos setting table

Quote:

For some reason or another, I decided that we should see if the optical lever servos were injecting too much noise into the test masses. The ITMs are much worse than the ETMs and I am afeared that they might be making the main noise for our arms in the 20-40 Hz region. Jenne is checking up on these feedback loops to see what's up.

To estimate the actuator gains of the mirrors, I turned on 1 count drives from LSC/CAL oscillators into the LSC drives of each test mass at the frequencies shown in the plot with the resulting peaks showing up in in POX/Y with the single arm locks in red. I will leave these going permanently, but with 0.1 count ampltiudes; we need to make it so in the scripts.

 I'm in the process of filling this table

OPLEV

SERVO     

300 ^

2:0

BR

16,24

Hz

ELP RLP BOOST RES

GAIN

QPD

COUNTS

 

QPD

mW

QPD

beam

OD

HE/NE

output

mW

%

back

on QPD

                                
ETMY PIT  FM1  FM5    55      -30 8,200 0.2   3.3  
        YAW  FM1  FM5    55      -28          
ETMX PIT  FM1  FM5  35        4.4 900 0.2   1.7  
       YAW  FM1  FM5  35        2.1          
ITMY PIT  FM1  FM5        3.3   52 14,400 0.4   9.5  
      YAW  FM1  FM5        3.3  -46          
ITMX PIT  FM1  FM5  50      3.3   30 7,400 0.17   2.8  
       YAW  FM1  FM5  50      3.3  -20          
BS  PIT  FM1  FM5  35      3.3   9 2,800 0.05   2.8  
    YAW  FM1  FM5  35      3.3  -9          
PRM  PIT FM1  FM5  55   FM7  3.3  7 3200 0.06   2.8  
       YAW FM1  FM5  55   FM7  3.3  -5          
SRM  PIT  FM1            -20       9.5  
       YAW  FM1            20          

 I should replace ETMX He/Ne laser

Attachment 1: OLsums.png
OLsums.png
  9947   Tue May 13 17:03:05 2014 SteveSummarySUSETMX oplev laser replaced

Quote:

Quote:

For some reason or another, I decided that we should see if the optical lever servos were injecting too much noise into the test masses. The ITMs are much worse than the ETMs and I am afeared that they might be making the main noise for our arms in the 20-40 Hz region. Jenne is checking up on these feedback loops to see what's up.

To estimate the actuator gains of the mirrors, I turned on 1 count drives from LSC/CAL oscillators into the LSC drives of each test mass at the frequencies shown in the plot with the resulting peaks showing up in in POX/Y with the single arm locks in red. I will leave these going permanently, but with 0.1 count ampltiudes; we need to make it so in the scripts.

 I'm in the process of filling this table

OPLEV

SERVO     

300 ^

2:0

BR ELP RLP BOOST RES

GAIN

QPD

COUNTS

 

QPD

mW

QPD

beam

OD

HE/NE

output

mW

%

back

on QPD

                                
ETMY PIT  FM1  FM5    55      -30 8,200 0.2   3.3  
        YAW  FM1  FM5    55      -28          
ETMX PIT  FM1  FM5  35        4.4 900 0.2   1.7  
       YAW  FM1  FM5  35       2.1  1,750  0.33    2.8  
ITMY PIT  FM1  FM5        3.3   52 14,400 0.4   9.5  
      YAW  FM1  FM5        3.3  -46          
ITMX PIT  FM1  FM5  50      3.3   30 7,400 0.17   2.8  
       YAW  FM1  FM5  50      3.3  -20          
BS  PIT  FM1  FM5  35      3.3   9 2,800 0.05   2.8  
    YAW  FM1  FM5  35      3.3  -9          
PRM  PIT FM1  FM5  55   FM7  3.3  7 3200 0.06   2.8  
       YAW FM1  FM5  55   FM7  3.3  -5          
SRM  PIT  FM1            -20       9.5  
       YAW  FM1            20          

 I should replace ETMX He/Ne laser

 

  9952   Wed May 14 10:04:06 2014 SteveSummarySUS oplev laser and temperature

 ETMX oplev qpd gain has to be increased.

 

Attachment 1: TempRules.png
TempRules.png
  9958   Thu May 15 15:10:02 2014 SteveUpdatePEMseismic activities

Our only seismometer is at the east end now.

Atm1, Ditch Day morning puzzle. The gardener came after the freshman did leave and cut the grass with the lawn mower.

Atm2, Yesterday afternoon the Aztecs containers moved out.

Attachment 1: DichDay.png
DichDay.png
Attachment 2: Ditchday8am.jpg
Ditchday8am.jpg
Attachment 3: AztecsGone.jpg
AztecsGone.jpg
  9961   Fri May 16 09:46:05 2014 SteveUpdatePSLpointing monitoring

Quote:

 Tonight I noticed that the drop in PMC transmission was ~1V, more than the usual of ~0.5V from the daily drift.

While re-aligning on the table, I noticed that the misalignment was not from either of the steering mirrors; i.e. I has to walk them both to get the alignment back. This implies that the misalignment is generated far upstream. Maybe the the laser itself is moving. We need some updates from Steve's laser misalignment tracker.

I'd like to replace the paper target with IOO -QPD_POS so we can log it.

  9962   Fri May 16 10:48:32 2014 SteveUpdateLSCY arm T- qpd is getting light guard extension tube

The qpd was removed from the east end table and threaded adaptor ring epoxied on it's shell.

This tube will cut down the amount of emergency exit light getting into the qpd.

Attachment 1: TRYepox.jpg
TRYepox.jpg
  9964   Fri May 16 11:22:23 2014 SteveUpdateLSCX Arm ALS Noise coming in and out

Quote:

Den and I spent some time with the interferometer last night with hopes of bringing in the AO path, but were stymied by the (re)occurrence of the anomalously high low frequency motion of the Xarm, as seen by fluctuations of TRX from .9 to .2 while "held" on resonance.

Jenne reported that they weren't seeing it earlier in the evening, and then it started again when I showed up. Holding the arms on IR, we could see a fair amount of excess low frequency noise in the BEATX_FINE_PHASE_OUT_HZ channel, as compared to BEATY, bringing its RMS to 5 times that of the Y arm. From the shape of the excess noise (broad slope from DC to tens of Hz), Rana suspected air currents and/or scattering effects being the culprit.

Den poked around a bit on the PSL table, which didn't really change much. He then went down to the X end table to inspect the table, and while he was there, I noticed the noise go down to being in line with the Yarm. I joined him at the end, and we found the beat phase noise in the frequency region of concern to be hugely sensitive to tapping on the enclosure, air current, etc. There is also a ton of green light everywhere, and multiple spots of green light around the green refl PD.

At that point however, the quiescent noise was acceptable (TRX fluctuations of <.2), so we went back to the control room to try to lock. Unfortunately, after a few attempts, the noise was back. At this point, we went home. The layout of the end table likely needs some attention to try and minimize our susceptibility to excess scatter effects. 

 Turn off the AC and flow bench please.

  9970   Mon May 19 09:19:44 2014 SteveUpdateLSChappy IFO

15 hours

Attachment 1: whenthinksareworking.png
whenthinksareworking.png
  9973   Tue May 20 09:12:25 2014 SteveSummarySUSETMX oplev qpd board

Quote:

 ETMX oplev qpd gain has to be increased.

 

 Atm3, Oplev sum read 12,000 counts when the qpd was disconnected ?

           Dark qpd was zero and normal He/Ne incident on qpd was 1,730 counts.

Attachment 1: ETMXOLQPD121.jpg
ETMXOLQPD121.jpg
Attachment 2: ETMXOLQPDface121.jpg
ETMXOLQPDface121.jpg
Attachment 3: ETMXolSUM.png
ETMXolSUM.png
  9974   Tue May 20 11:48:22 2014 SteveUpdateSUSbeam dumps added to ETMX_ISCT

Anodized aluminum dumps replaced by 6 razor beam dumps.

Two more razor beam dumps added this afternoon.   The picture will updated tomorrow.

Attachment 1: razorbeamdumps.jpg
razorbeamdumps.jpg
Attachment 2: razorbeamdumpss.jpg
razorbeamdumpss.jpg
  9980   Wed May 21 09:35:33 2014 SteveUpdateSUS razor beam dumps ETMX_ISCT

Quote:

Anodized aluminum dumps replaced by 6 razor beam dumps.

Two more razor beam dumps added this afternoon.   The picture will updated tomorrow.

 There are 9 razor beam dumps at ETMY-ISCT

Attachment 1: 9rbdETMY.jpg
9rbdETMY.jpg
  9984   Wed May 21 13:51:19 2014 SteveUpdatesafetyscope battery recall

Tektronix RECALL on TDS3000 or TDS300B  oscilloscope BATTERIES TDS3BATB

This Lithium-Ion battery can be a fire hazard !  Remove battery pack and recycle it through Safety Office !

  9989   Thu May 22 11:21:06 2014 SteveUpdateSUSETMX oplev

Quote:

Quote:

Anodized aluminum dumps replaced by 6 razor beam dumps.

Two more razor beam dumps added this afternoon.   The picture will updated tomorrow.

 There are 9 razor beam dumps at ETMY-ISCT

 I added two green glass absorbers. The oplev centering may need a touch up when it is well aligned.

Attachment 1: ETMXoplev.png
ETMXoplev.png
  9994   Tue May 27 11:00:43 2014 SteveUpdateVACRGA scan at day 111

 

 Rga scan at pump down 77, vacuum normal valve configuration, maglev rotation 560 Hz and day 111

Attachment 1: pd77d111RGA.png
pd77d111RGA.png
  9998   Wed May 28 11:55:16 2014 SteveUpdatePSLPSL Innolight controller fan is noisy

Quote:

Also, while I was working on the PSL table, I heard noise that sounded like a bearing rolling around.  I suspected the HEPAs, since the one on the north east corner of the table has a problem when it's turned up high (we've known about this for a long time), however turning off the HEPAs didn't affect the noise.  The noise is strongest near the back of the PSL controller on the shelf above the table, and the PSL controller box is vibrating.  So, I suspect that the fan on the PSL controller box is about to give out.

EDIT:  To clarify, I mean the Innolight's controller.

 The bearing is chirping in the back of the 2W Innolight laser controller. It is loud enough to hear it. I placed 4 soft  rubber feet under the controller to avoid shaking other things on self.

The HEPA filter bearing becomes noisy at 50V

 Keep it at 20V for low noise

Attachment 1: 2WinnoRFan.jpg
2WinnoRFan.jpg
  10023   Wed Jun 11 08:57:49 2014 SteveUpdatePEM air cond maintenance tomorrow morning

Quote:

  The 4th week of no wet mopping of the floor  and no wet wiping  the vacuum envelope.

 

We cleaned the intakes of the south arm IFO air condition. The bottom duct have quite a bit accumulation Atm1

See wet wiped contrast on Atm2

We found 3 holes around pipes ( coming from CES ) on the east wall that has to be sealed.

After closer examination of these holes, they are sealed off well.

 Air condition maintenance will be finished by 11:30am tomorrow.

 

Yesterday, Kelvin mopped with chemicals the whole floor area of the  lab. This was triggered by some  visiting  ants at our PSL last week. It was 6 months since we had the last fully wet mopped IFO floor.

The cleaning- mopping water became   very dirty at the end.

  10028   Wed Jun 11 16:01:31 2014 SteveUpdateCDSc1Vac1 and c1vac2 rebooted

Quote:

 

 I have brought back c1auxex and c1auxey.  Hopefully this elog will have some more details to add to Rana's elog 10015, so that in the end, we have the whole process documented.

The old Dell computer was already in a Minicom session, so I didn't have to start that up - hopefully it's just as easy as opening the program.

I plugged the DB9-RJ45 cable into the top of the RJ45 jacks on the computers.  Since the aux end station computers hadn't had their bootChanges done yet, the prompt was "VxWorks Boot" (or something like that).  For a computer that was already configured, for example the psl machine, the prompt was "c1psl", the name of the machine.  So, the indication that work needs to be done is either you get the Boot prompt, or the computer starts to hang while it's trying to load the operating system (since it's not where the computer expects it to be).  If the computer is hanging, key the crate again to power cycle it.  When it gets to the countdown that says "press any key to enter manual boot" or something like that, push some key.  This will get you to the "VxWorks Boot" prompt. 

Once you have this prompt, press "?" to get the boot help menu.  Press "p" to print the current boot parameters (the same list of things that you see with the bootChange command when you telnet in).  Press "c" to go line-by-line through the parameters with the option to change parameters.  I discovered that you can just type what you want the parameter to be next to the old value, and that will change the value.  (ex.  "host name   : linux1   chiara"   will change the host name from the old value of linux1 to the new value that you just typed of chiara). 

After changing the appropriate parameters (as with all the other slow computers, just the [host name] and the [host inet] parameters needed changing), key the crate one more time and let it boot.  It should boot successfully, and when it has finished and given you the name for the prompt (ex. c1auxex), you can just pull out the RJ45 end of the cable from the computer, and move on to the next one.

 

 Koji, Jenne and Steve

 

Preparation to reboot:

1, closed VA6, V5 disconnected cable to valves ( closed all annuloses )

2, closed V1, disconnected it and stopped Maglev rotation

3, closed V4, disconnected its cable

   See Atm1,  This set up is insured us so there can not be any accidental valve switching to vent the vacuum envelope if reboot-caos strikes.[moving=disconnected]

4, RESET c1Vac1 and c1Vac2 one by one and together. They both went at once. We did NOT power recycled.

    Jenne entered the new "carma" words on  the old Dell laptop and checked the good answers. The reboot was done.

    Note: c1Vac1 green-RUN indicator LED is yellow. It is fine as yellow.

5, Checked and TOGGLED valve positions to be correct value ( We did not correct the the small turbo pumps monitor positions, but they  were alive )

6,  V4 was reconnected and opened. Maglev was started.

7,  V1 cable reconnected and opened at full rotation speed of 560 Hz

8,  V5 cable reconnected,  valve opened..............VA6 cable connected and opened........

9,   Vacuum Normal valve configuration was reached.

 

Attachment 1: beforeReboot.png
beforeReboot.png
  10030   Thu Jun 12 10:41:58 2014 SteveUpdatePSLPMC-T trend of 4 years

Quote:

Quote:

Also, while I was working on the PSL table, I heard noise that sounded like a bearing rolling around.  I suspected the HEPAs, since the one on the north east corner of the table has a problem when it's turned up high (we've known about this for a long time), however turning off the HEPAs didn't affect the noise.  The noise is strongest near the back of the PSL controller on the shelf above the table, and the PSL controller box is vibrating.  So, I suspect that the fan on the PSL controller box is about to give out.

EDIT:  To clarify, I mean the Innolight's controller.

 The bearing is chirping in the back of the 2W Innolight laser controller. It is loud enough to hear it. I placed 4 soft  rubber feet under the controller to avoid shaking other things on self.

The HEPA filter bearing becomes noisy at 50V

 Keep it at 20V for low noise

  The aging of the laser came up when the noisy bearing showed.  ~10% down in in 4 years. That is pretty good.

Attachment 1: 4yTrend2Winno.png
4yTrend2Winno.png
  10035   Fri Jun 13 09:20:37 2014 SteveUpdateSUSrestored damping at PRM and ETMY

ETMX medm screen values are blank.

  10076   Thu Jun 19 17:28:19 2014 SteveUpdatePSL window device is ready for test

The window is at the north west corner of the  PSL enclosure.

The 1 mm thick BK7 window is AR coated both side R <0.08%,  W2-PW1-1004-1064-0

The PZT stack is 0.75" OD, 0.25" thick with  ~ 6 mm ID,  motion range 2.5 micron at 200V

Soft silicon rubber isolation.

 

RXA: This is the opto-mechanical phase shifter that Steve has built for diagnosing scattered light problems. We put it into the reflected light path of any of the cavities and see if it can move the scattering noise from DC up to a higher frequency. e.g.:

The paper on this from GEO

Attachment 1: softW2.jpg
softW2.jpg
Attachment 2: softW2b.jpg
softW2b.jpg
  10112   Mon Jun 30 10:06:39 2014 SteveUpdateVAClow on pneumatic pressure of vacuum valves

This morning valve condition: V1, VM1, V4 and V5 valves were closed. IFO pressure rose to 1.3 mTorr

It was caused by low N2 pressure.  Our vacuum valves are moved-controlled by 60-70 PSI of nitrogen.

When this supply drops below 50-60 PSI the interlock closes V1 valve. This is the minimum pressure required to move the large valves.

It is our responsibility to check the N2 cylinder pressure supply.

The vacuum valve configuration is back to VAC. NORMAL,  CC1  4.8E-6 Torr

 

PS: Bob says that the second cylinder was full this morning, but the auto-switch over did not happen.

Attachment 1: runoutofN2.png
runoutofN2.png
Attachment 2: lowN2.png
lowN2.png
Attachment 3: N2d100.png
N2d100.png
  10120   Wed Jul 2 11:47:26 2014 SteveUpdateVACbroken changeover regulator of N2 supply

Quote:

This morning valve condition: V1, VM1, V4 and V5 valves were closed. IFO pressure rose to 1.3 mTorr

It was caused by low N2 pressure.  Our vacuum valves are moved-controlled by 60-70 PSI of nitrogen.

When this supply drops below 50-60 PSI the interlock closes V1 valve. This is the minimum pressure required to move the large valves.

It is our responsibility to check the N2 cylinder pressure supply.

The vacuum valve configuration is back to VAC. NORMAL,  CC1  4.8E-6 Torr

 

PS: Bob says that the second cylinder was full this morning, but the auto-switch over did not happen.

 The TESCOM automatic changeover regulator  [ model ACS 012-1011 ] manifold is most likely  clogged. The new one will arrive 8-8-2014

This means that the IFO pressure may go up to a few mTorr when we change cylinder or V1 valve triggered because there is no nitrogen supply.

  10121   Wed Jul 2 14:19:17 2014 SteveUpdateGeneralOphir pmeter gets new filter

Ophir power meter gets new filter with calibration. This is not cheap. It was the second time we lost it.

Filter leash is attached.

Attachment 1: ophirNewFilter.jpg
ophirNewFilter.jpg
  10132   Mon Jul 7 09:46:00 2014 SteveConfigurationSUSall sus damping restored

All suspension damping restored. There had to be an earth quake.

Attachment 1: 6.9MagMexico.png
6.9MagMexico.png
  10138   Mon Jul 7 14:38:55 2014 SteveUpdatesafetysafety training

TaraV - geology major undergrad -  of Jenne's summer help received 40m specific basic safety training.

  10141   Mon Jul 7 16:39:26 2014 SteveUpdatePEMants on the PSL table

Quote:

Quote:

We observed one or two ants climbing over PMC optics without booties and safety glasses.

The floor was mopped with strong Bayer Home Pest Control solution in the Vertex area.

Do not work inside the 40m lab if you are sensitive to chemicals!

 

 The floor is mopped again with strong PEST CONTROL SOLUTION in water in the Vertex area.

Do not plane to work in the IFO-room till noon if you are sensitive to chemicals!

 Ants are back on the PSL table. We'll be mopping the floor with pest control solution tomorrow morning.

  10176   Thu Jul 10 15:57:00 2014 SteveUpdateSUSflow bench is turned off

Flow bench effect on oplev error signal     is here.

I turned off the south X-end flow bench.

  10181   Fri Jul 11 08:11:56 2014 SteveUpdateCDSETMX needs help
Attachment 1: ETMX.png
ETMX.png
  10201   Tue Jul 15 11:04:05 2014 SteveUpdatesafetysafety glasses must be worn all times!

This is the third safety glasses that I found laying around in the IFO lab lately. Safety glasses must be worn ALL times in the IFO room!

This rule is essential for your protection! Please do not enter if you can not put up with this regulation!

 

 

Attachment 1: safetyglasses.jpg
safetyglasses.jpg
  10216   Wed Jul 16 15:26:48 2014 SteveUpdatePSLPSL Innolight controller fan is dying

Quote:

Quote:

Also, while I was working on the PSL table, I heard noise that sounded like a bearing rolling around.  I suspected the HEPAs, since the one on the north east corner of the table has a problem when it's turned up high (we've known about this for a long time), however turning off the HEPAs didn't affect the noise.  The noise is strongest near the back of the PSL controller on the shelf above the table, and the PSL controller box is vibrating.  So, I suspect that the fan on the PSL controller box is about to give out.

EDIT:  To clarify, I mean the Innolight's controller.

 The bearing is chirping in the back of the 2W Innolight laser controller. It is loud enough to hear it. I placed 4 soft  rubber feet under the controller to avoid shaking other things on self.

The HEPA filter bearing becomes noisy at 50V

 Keep it at 20V for low noise

 The fan is dying. It is changing speed erratically and stops for short time periods. It is very likely to stop rotating soon. It will halt all operations in the lab. We can not see the PMC-T power because Manasa is working on

 AOM alignment.

 

  10231   Thu Jul 17 17:19:25 2014 SteveUpdatePSLPSL Innolight controller fan is dying with extra fan

Quote:

[Koji, Manasa]

The air flow from the dying fan was kinda weak and we decided to give a help with an external fan.

Koji brought a fan taken from a junk found at EE shop in W.Bridge.
The fan has been tied to the cage of the existing fan using cable ties to provide air circulation.
So even if the existing one dies anytime, we still don't super-heat anything.
The power supply for the fan rests next to the controller. 

The air from the fan ventilation was hot, and now with the additional fan this hot air is actually sucked
out with stronger flow. So this is relieving for now.

     PMC transmission as an indicator of laser controller with extra fan solution: 8 and 1day plot

Attachment 1: fanadded.png
fanadded.png
  10245   Mon Jul 21 10:51:06 2014 SteveUpdateVACN2 supply run out

Interlock closed valve V1, V4, V5 and VM1 when the nitrogen supply run out. The IFO pressure rose to P1 1 mTorr

In order to recover Vacuum Normal valve configuration I did the following:

Replaced both nitrogen cylinders. Confirmed pneumatic nitrogen pressure 70 PSI.   Opened valves V4 and V5

At P2 < 1 mTorr, Maglev rotation 560 Hz , V1 was opened.

VM1 was opened when CC1 pressure dropped below < 1e-5 torr

 

Please  take a look at the N2 cylinders pressure on Friday to insure that there is enough for the week end.

The daily consumption is 600-700 PSI

Attachment 1: outofN2.png
outofN2.png
  10259   Wed Jul 23 10:39:18 2014 SteveUpdateCamerasvideo quad processors replaced

Quad processor 2 & 3 were replaced.

  10268   Thu Jul 24 09:18:15 2014 SteveUpdateGeneralfour days
Attachment 1: 4days.png
4days.png
  10270   Thu Jul 24 14:20:30 2014 SteveUpdateSUSPRM & other oplev gain settings checked

 The PRM sus gains checked OK

All other suspension oplev gains setting were checked out OK

 

Attachment 1: PRMgainsSensors.png
PRMgainsSensors.png
  10284   Tue Jul 29 07:54:34 2014 SteveUpdateSUSETMX damping restored

ETMX sus damping restored

  10294   Wed Jul 30 09:33:33 2014 SteveUpdateSUSRIN of HeNe lasers

From old 40m elog 5-29-2007

Attachment 1: RINHeNe.pdf
RINHeNe.pdf
Attachment 2: RINHeNe2.pdf
RINHeNe2.pdf
Attachment 3: RINHeNe2.pdf
RINHeNe2.pdf
Attachment 4: RINHeNe3.pdf
RINHeNe3.pdf
  10295   Wed Jul 30 09:51:18 2014 SteveUpdatePSLPSL Innolight controller fan is noisy

Quote:

 

 The bearing is chirping in the back of the 2W Innolight laser controller. It is loud enough to hear it. I placed 4 soft  rubber feet under the controller to avoid shaking other things on self.

The HEPA filter bearing becomes noisy at 50V

 Keep it at 20V for low noise

 

Hello Steve, 

I’ve received some fan pictures from our manufacturing center. Your system will have one of the two fans pictured. Please contact manufacture company   for more information.

http://www.sunon.com/index.php

 

 

Best Regards,

Agustin (TJ) Tijerina

Commercial Product Support Center

Coherent, Inc.

5100 Patrick Henry Dr., Santa Clara, Ca. 95054

Product Support: (800) 367-7890

product.support@coherent.com

www.coherent.com

 Finally we got it!

The fans are ordered.

  10328   Mon Aug 4 09:17:42 2014 SteveUpdateSUSITMX is still kicked

Quote:

I was investigating several issues on the IFO. As many of you noticed and not elogged, ITMX had frequent kicking without its oplev servo.
Also I had C1:LSC-TRY_OUT flatted out to zero even though I could see some fringes C1:SUS-ETMY_TRY_OUT.

Restarted all of the realtime models (no machine reboot).

Now I don't find any beam on REFL/AS/POP cameras.

If I look at BS-PRM camera, I can see big scattering, the beam is in the BS chamber.
I jiggled TT1 but cannot find neither a Michelson fringe nor POP beam.

So far I can't figure out what has happened but I'm leaving the lab now.

IMC is locked fine.
I can see some higher order mode of the Yarm green, so the Y arm alignment is no so far from the correct one.

 ITMX is kicked up periodically.  ITMX_PD_MAX_VAR is lowered to 500 from 1350

It started at Friday morning 8-1

Attachment 1: ITMXkicked.png
ITMXkicked.png
Attachment 2: ITMXkickedStart.png
ITMXkickedStart.png
  10361   Mon Aug 11 08:04:01 2014 SteveUpdateSUSETMX damping restored
  10419   Thu Aug 21 15:07:48 2014 SteveUpdateVACRGA scan at day 197

 

 

Attachment 1: RGAscan@d197.png
RGAscan@d197.png
  10425   Fri Aug 22 15:58:02 2014 SteveSummaryIOOMC WFS activity

 

 

Attachment 1: GoyphaseSet.png
GoyphaseSet.png
  10428   Mon Aug 25 09:56:21 2014 SteveUpdateIMC IMC WFSs upgrade

 

 The Napa earth quake magnitude 6 did not have any effect on the suspensions.

 The Goy phase upgrade was done nicely. The IOO pointing did not change. Credit owned to Nick and Andres.

  IFO is locked right on.

Attachment 1: eq6Mnapa.png
eq6Mnapa.png
  10429   Mon Aug 25 15:49:44 2014 SteveUpdatePSLHEPA turned on

The PSL HEPA was off. It was turned on and it is running at 30VAC now.

  10435   Thu Aug 28 08:31:16 2014 SteveUpdateGeneralone good day
Attachment 1: 1goodDay.png
1goodDay.png
Attachment 2: 1gooday.png
1gooday.png
  10436   Thu Aug 28 11:02:53 2014 SteveUpdateCalibration-RepairSR785 repair

SN 46,795 of 2003 is back.

Attachment 1: 08281401.PDF
08281401.PDF
  10459   Fri Sep 5 15:28:38 2014 SteveUpdateSUSHeNe laser test preparation

The SRM qpd was moved to accommodate the HeNe laser qualification test for LIGO Oplev use.

The qpd was saturating at 65,000 counts of 3 mW

ND1 filter lowering the power by 10 got rid of saturation. I epoxied an adapter ring to the qpd.

Atm3 was taken before saturation was realized with Koji's help.

Atm4 ND1 on SRM qpd. Now it is working and everything is moving.

 

Attachment 1: beforeRSMqpdMoved.jpg
beforeRSMqpdMoved.jpg
Attachment 2: afterSRMqpdMoved.jpg
afterSRMqpdMoved.jpg
Attachment 3: 1103Ptest.png
1103Ptest.png
Attachment 4: ND1onQPD.png
ND1onQPD.png
  10461   Fri Sep 5 16:25:36 2014 SteveUpdateSUScenter ITMY oplev

Quote:

The SRM qpd was moved to accommodate the HeNe laser qualification test for LIGO Oplev use.

The qpd was saturating at 65,000 counts of 3 mW

ND1 filter lowering the power by 10 got rid of saturation. I epoxied an adapter ring to the qpd.

Atm3 was taken before saturation was realized with Koji's help.

Atm4 ND1 on SRM qpd. Now it is working and everything is moving.

 

 ITMY oplev should be centered. I worked too much around it.

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