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New entries since:Wed Dec 31 16:00:00 1969
ID Date Authorup Type Category Subject
  8240   Wed Mar 6 11:33:09 2013 steveUpdateSAFETYsafety audit 2013

 

                                                 Recommended correction list:

1,  refill- upgrade first aid boxes

2,  maintain 18" ceiling to bookshelf clearance so the ceiling fire sprinklers are not blocked: room 101

3,  label chilled water supply & return valves in IFO room

4,  calibrate bake room hoods annually

5,  update safety sign at fenced storage

 

              40m still to do list:

1,   clean and measure all safety glasses

2,   annual crane inspection is scheduled for 8am March 19, 1013

3,   make PSL encloser shelf earthquake proof

 

Do you see something that is not safe? Add it to this list please.

 

 

Attachment 1: IMG_0010.JPG
IMG_0010.JPG
  8287   Wed Mar 13 16:04:24 2013 steveUpdateSAFETYlaser safety glasses checked

 All safety glasses were cleaned in soapy water by Bob. I measured their transmission at 1064 nm, 150 mW,  beam diameter 1.5 mm  They are in working order, no transmission.

 Inventory:

10 pieces of KG-5, fit over, from Laser Safety

 4 pieces of KG-5, std size, from Drever Lab, best visibility

 1 piece of KG-5 coated for visible, std size, from Kentek

15 pieces of green-plastic LOTG-YAG, fit over, from UVEX

 7 pieces of green-plastic B-D+S 137, std areo fit, from Sperian

 3 pieces of green-plastic, old Thorlab, fit over

 2 pieces of green-plastic, fit over, from Laservision

 8 pieces of braun- plastic, fit over, for green & IR protection, from UVEX & Thorlabs

Attachment 1: safetyglasseschecked.jpg
safetyglasseschecked.jpg
  8309   Tue Mar 19 10:30:00 2013 steveUpdateSAFETYcrane inspection 2013

 

Professional crane inspector: Fred Goodbar found two small leaks at the Vertex trolley as he was conducting the annual inspection of the 40m cranes.  Otherwise the cranes are in safe condition.

Attachment 1: sippingOIL.jpg
sippingOIL.jpg
Attachment 2: 03191301.PDF
03191301.PDF
  8661   Fri May 31 10:25:17 2013 steveUpdatesafetyfirst aid kits refilled

Quote:

 

                                                 Recommended correction list:

1,  refill- upgrade first aid boxes

2,  maintain 18" ceiling to bookshelf clearance so the ceiling fire sprinklers are not blocked: room 101

3,  label chilled water supply & return valves in IFO room

4,  calibrate bake room hoods annually

5,  update safety sign at fenced storage

 

              40m still to do list:

1,   clean and measure all safety glasses

2,   annual crane inspection is scheduled for 8am March 19, 1013

3,   make PSL encloser shelf earthquake proof

 

Do you see something that is not safe? Add it to this list please.

 

 

 

Restocked First Aid Kits Location:

Main entrance, room 100

Drill press - above N2 cylinders, room 103

Control room, next to fire extinguisher, room  102

Vertex-north wall, IFO room 104

ETMY - right on ends light switches, IFO room 104_ east end

ETMX - on vertical I-beam of crane, IFO room 104_south end

Behind 1X3 Rack, on south wall - under instrument breakers panel PC-1, IFO room 104

 

Last thing remaining to be fixed from 2013 Safety Audit:

replace book shelf with 83" height

 

 

Attachment 1: refilledFAidK.jpg
refilledFAidK.jpg
  8687   Thu Jun 6 16:33:19 2013 steveUpdatesafetyupdated laser inventory

 Updated laser inventory and operator list. They are posted in the 40m wiki and entry doors of the 40m IFO room.

Let me know if this list needs correction.

Lightwave  M126N-1064-700 NPRO sn 337 in the PSL enclosure got connected to local emergency shut off switch. This is a LIGO operational safety requirement.

 

Attachment 1: ELSOconnected.jpg
ELSOconnected.jpg
  9090   Fri Aug 30 08:08:29 2013 steveUpdatesafetyfire horns-flashers tested OK

 

 We had fire alarm tests  and evacuation drills at 1:30pm yesterday. All flashers and horns are functioning unbearably loud and bright including clean assembly room.

  9653   Wed Feb 19 08:07:01 2014 steveUpdatesafetyannual laser safety glasses check

 

 All 40m laser safety glasses are cleaned and measured this morning.  Bring your own safety glasses if you have to enter the 40m IFO room.

 

Glasses were washed in 1% Liquinox water solution and  their transmission measured at  165 mW,  2 mm OD beam of 1064 nm

Attachment 1: AA2014checked.jpg
AA2014checked.jpg
Attachment 2: 2014check.jpg
2014check.jpg
  9672   Tue Feb 25 16:54:57 2014 steveUpdatesafetysafety audit 2014

 

 We had our annual safety inspection today.  Our SOPs are outdated. The full list of needed correction will be posted tomorrow.

 

The most useful found was that the ITMX-ISCT ac power is coming  from 1Y1 rack. This should actually go to 1Y2 LSC rack ?

 Please test this so we do not create more ground loops.

  9681   Thu Feb 27 13:11:13 2014 steveUpdatesafetysafety audit correction

Quote:

 

 We had our annual safety inspection today.  Our SOPs are outdated. The full list of needed correction will be posted tomorrow.

 

The most useful found was that the ITMX-ISCT ac power is coming  from 1Y1 rack. This should actually go to 1Y2 LSC rack ?

 Please test this so we do not create more ground loops.

 Linus-1, Nodus and others  ac cords can be moved over to new blank yellow extension cord with multiple recepticals.

 Remove two red extension cords going to Smart UPS

Attachment 1: noDaisyChaining.jpg
noDaisyChaining.jpg
Attachment 2: ZbThumbnail.info
  9699   Thu Mar 6 11:43:17 2014 steveUpdateGeneralGuralp control unit

CMG-40T handheld controller unit is missing its power supply. In order to zero the instrument one has to apply plus and minus DC voltage.

The wiring on this 10 pin Amphenol PT02E-12-10P is shown.

Attachment 1: GuralpCU.jpg
GuralpCU.jpg
Attachment 2: BAH.jpg
BAH.jpg
  9704   Fri Mar 7 16:56:17 2014 steveUpdateIOOIOO qpds centered

Quote:

Quote:

The IMC has not been behaving well since this morning and totally not happy when Q was finishing his measurements. The WFS servo had large offsets in pitch. Looking back at the trend and using ezcaservo to restore the suspensions did not help.

I realigned the IMC and brought TRANS SUM to ~18000 and MCREFL to < 0.5. The spot positions are not very good; nearly 2 mm off in pitch on MC1 and MC3. But after the alignment of MC, the WFS servo offsets were below +/-20.

The MC has been locked stably with WFS servo ON for the last few hours.

P.S. I did not touch the WFS pointing or reset the WFS offsets.

MC remained locked with WFS enabled all through last night and this morning. Koji dropped by and looked at the MC. The MC WFS servo, though stable, was at the edge of becoming unstable. This was because I did not touch the WFS pointing on the QPDs yesterday after realigning. So I recentered the WFS, reset the WFS filterbank offsets and reenabled the servo.

I measured the spot positions on MC mirrors for reference.

Spot positions in mm (MC1,2,3 pit MC1,2,3 yaw): [1.405767579680834, 0.79369009503571208, 1.3220430681427462, -1.2937873599406551, -1.1704264340968924, -1.2518046122798692]

 

Attachment 1: IOOqpdCentered.png
IOOqpdCentered.png
  9705   Mon Mar 10 09:28:48 2014 steveUpdateIOOIOO pointing 2 days

 Morning seconds without adjustment.

 

Attachment 1: IOOpointing2d.png
IOOpointing2d.png
Attachment 2: morningseconds.png
morningseconds.png
  9725   Thu Mar 13 16:05:48 2014 steveUpdatesafetysafety audit 2014

Quote:

 

 We had our annual safety inspection today.  Our SOPs are outdated. The full list of needed correction will be posted tomorrow.

 

The most useful found was that the ITMX-ISCT ac power is coming  from 1Y1 rack. This should actually go to 1Y2 LSC rack ?

 Please test this so we do not create more ground loops.

 Annual crane inspection is scheduled for 8-11am Monday, March 17, 2014

 

The control room Smart UPS has two red extension cords that has to be removed: Nodus and Linux1

Attachment 1: T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf
T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf T1400198-v1-CIT-LIGO_Labs_Annual_Safety_Audit_2014.pdf
  9730   Mon Mar 17 10:50:58 2014 steveUpdatesafety2014 annual crane certification

Quote:

Quote:

 

 We had our annual safety inspection today.  Our SOPs are outdated. The full list of needed correction will be posted tomorrow.

 

The most useful found was that the ITMX-ISCT ac power is coming  from 1Y1 rack. This should actually go to 1Y2 LSC rack ?

 Please test this so we do not create more ground loops.

 Annual crane inspection is scheduled for 8-11am Monday, March 17, 2014

 

The control room Smart UPS has two red extension cords that has to be removed: Nodus and Linux1

 KroneCrane Fred inspected and certified the 3 40m cranes for 2014. The vertex crane crane was load tested at fully extended position.

Attachment 1: 2014craneCert.jpg
2014craneCert.jpg
  9743   Fri Mar 21 14:59:44 2014 steveUpdatePEMcontroling dust

Please take a look at the table top with the flashlight before removing it. If it is dusty, wipe it down with dry lint free cloth in the box.

There is one box with flash light and wiper at AP, ETMY & ETMX  optical tables.

Attachment 1: IMG_0044.JPG
IMG_0044.JPG
  9748   Mon Mar 24 22:13:37 2014 steveUpdateGeneralPower Failure

Quote:

I'm checking the status from home.

P1 is 8e-4 torr

nodus did not feel the power outage (is it APS supported?)

linux1 booted automatically

c1ioo booted automatically.

c1sus, c1lsc, c1iscex, c1iscey need manual power button push.

 9:11pm closed PSL shutter, turned Innolight 2W laser on,

         turned 3 IFO air cond on,

        CC1 5.1e-5 torr, V1 is closed, Maglev has failed, valve configuration is " Vacuum Normal "  with V1 & VM1 closed, RGA not running,   c1vac1 and c1vac2   were saved by UPS,

        (Maglev is not connected to the UPS because it is running on 220V)

        reset & started Maglev.........I can not open V1 without the 40mars running...........

        Rossa is the only computer running in the control room,

        Nodus and Linux1 was saved by UPS,

        turned on IR lasers at the ends, green shutters are closed

It is safe to leave the lab as is.

     

Attachment 1: poweroutage.png
poweroutage.png
  9749   Tue Mar 25 14:52:57 2014 steveUpdateVACvacuum is recovered

 Out gassing plus leak rate   0.15  mTorr / hour

 The pressure rose to 2.5 mTorr in 17 hours

 V1 was opened at 1:56pm

 VM2 opened at 2:10 so the RGA region is back to 1e-5 torr

 

Attachment 1: 17hrsNoPumping.png
17hrsNoPumping.png
  9757   Fri Mar 28 16:26:20 2014 steveUpdateVACRGA scan after power failure

Quote:

 Out gassing plus leak rate   0.15  mTorr / hour

 The pressure rose to 2.5 mTorr in 17 hours

 V1 was opened at 1:56pm

 VM2 opened at 2:10 so the RGA region is back to 1e-5 torr

 

 

Attachment 1: afterPowerFailure.png
afterPowerFailure.png
  9802   Fri Apr 11 14:57:53 2014 steveUpdateLSCcongratulation

 

 

Attachment 1: whenSheisHappy3h.png
whenSheisHappy3h.png
Attachment 2: mc4hArms3hrs.png
mc4hArms3hrs.png
  9870   Mon Apr 28 17:27:29 2014 steveUpdatesafetysafety audit 2014

Quote:

Quote:

 

 We had our annual safety inspection today.  Our SOPs are outdated. The full list of needed correction will be posted tomorrow.

 

The most useful found was that the ITMX-ISCT ac power is coming  from 1Y1 rack. This should actually go to 1Y2 LSC rack ?

 Please test this so we do not create more ground loops.

 Annual crane inspection is scheduled for 8-11am Monday, March 17, 2014

 

The control room Smart UPS has two red extension cords that has to be removed: Nodus and Linux1

 Last long extension cord removed from 1Y1 to ITMX-ISCT

The AC power strip at ITMX-ISCT is coming from wall L#26

  9873   Tue Apr 29 00:11:03 2014 steveUpdatesafetysafety audit 2014

Be aware that this may affect POP QPD and POP RF Thorlabs PD

Quote:

 Last long extension cord removed from 1Y1 to ITMX-ISCT

The AC power strip at ITMX-ISCT is coming from wall L#26

 

  9895   Thu May 1 17:14:36 2014 steveUpdatePSLthin window AR measured

CVI broadband AR coating was measured at the PSL-enclosure table around 9-10am today. The 2W Innolight first PBS  S polarization beam was used with an other 1/2 wave plate and PBS.

W2-PW1-1004-C-633-1064-0   This 0.045" thick window has 0.7- 0.8 % reflected beam on each sides at 5 degrees of incidence, P polarization.

The specification is  R avg <0.5 % per surface at 0 degree

Rana wants The device would be useless with such a high R, but R 0.1% is OK so I will get V coating.

  9900   Fri May 2 08:15:54 2014 steveUpdatesafetysafety audit 2014

 

 Late adition: CHECK all viewport covers.

A, transparent Lexan sheet is protecting glass windows in a horizontal position

B, metal housing protection is required on each viewport except signal ports

C, signal ports should be shielded by optical table enclosure

 

We have to cover this window-camera with implosion proof cover or just remove it and blank it.

Question number 2: Do our vertically positioned windows with flip able covers require protective lexan ? NO 5-5-2014

Attachment 1: solidCoverRequired.jpg
solidCoverRequired.jpg
  9902   Fri May 2 10:38:29 2014 steveUpdatePSLthin window AR measured

Quote:

CVI broadband AR coating was measured at the PSL-enclosure table around 9-10am today. The 2W Innolight first PBS  S polarization beam was used with an other 1/2 wave plate and PBS.

W2-PW1-1004-C-633-1064-0   This 0.045" thick window has 0.7- 0.8 % reflected beam on each sides at 5 degrees of incidence, P polarization.

The specification is  R avg <0.5 % per surface at 0 degree

Rana wants The device would be useless with such a high R, but R 0.1% is OK so I will get V coating.

 CVI V-AR coating at 1064 nm, 0 degree,  catalog item is R< 0.25% on each sides,

 R <0.1 % is custom at much higher prices.

This custom order should go with other  orders that has similar need.

From CVI: 5-6-2014

I checked the trace info on the W2-PW1-1004-C-633-1064-0, BBAR coated window that you received.  It is side 1, 0.42%R & side 2, 0.53%R @ 1064nm.  And with the shift, I’m not too surprised you ended up with 0.7%.  A V coat would start with <0.25% (and more typically coming in at ~0.1%) per surface.  As far as stock options, I have a 1”dia x 4mmT, fused silica window that is recorded as side 1, R=0.09 and Side 2, R=0.08% @ 1064.  Is this too think or will it work for you?

 

 

  9914   Tue May 6 09:46:50 2014 steveUpdatePEMcleaning day

 Keven and Steve,

We cleaned around the Vertex chambers, PSL and MC2 floor areas.

 

Attachment 1: 120d.png
120d.png
  9915   Tue May 6 10:22:28 2014 steveUpdateCDSc1ioo dolphin fiber

Quote:

Steve and I nicely routed the dolphin fiber from c1ioo in the 1X2 rack to the dolphin switch in the 1X4 rack.  I shutdown c1ioo before removing the fiber, but still all the dolphin connected models crashed.  After the fiber was run, I brought back c1ioo and restarted all wedged models.  Everything is green again:

green.png

 I put label  at the dolphin fiber end at 1X2 today.   After this I had to reset it, but it failed.

Attachment 1: dolphin1x2.png
dolphin1x2.png
  9918   Tue May 6 18:32:14 2014 steveUpdateLSCTRY 60Hz noise hunt

This is an effort to get rid of our ground loops  by isolating the electronic components from the optical table.

Aluminum mounting base plates of Thorlabs BA2 and Newport B-2 were replaced by plates or post made out of delrin material.

This is an insulator. DELRIN base plates were installed 6 places. The oplev-qpd has Nylon base plate.

The NPRO and HE/NE lasers are not isolated from the table. S8 and S9

I'm not sure about the doubling oven S10 

The optical table is grounded at G11  through  ~1 Mohms to the ETMY chamber.

Alignment touch up needed   at all D-marked component!

 

Attachment 1: ETMY-ISCT_EISOL.jpg
ETMY-ISCT_EISOL.jpg
  9921   Wed May 7 14:01:36 2014 steveUpdateLSCTRY 60Hz noise hunt

Quote:

This is an effort to get rid of our ground loops  by isolating the electronic components from the optical table.

Aluminum mounting base plates of Thorlabs BA2 and Newport B-2 were replaced by plates or post made out of delrin material.

This is an insulator. DELRIN base plates were installed 6 places. The oplev-qpd has Nylon base plate.

The NPRO and HE/NE lasers are not isolated from the table. S8 and S9

I'm not sure about the doubling oven S10 

The optical table is grounded at G11  through  ~1 Mohms to the ETMY chamber.

Alignment touch up needed   at all D-marked component!

 

 Attachment appendix:

 

D: component delrin isolated

N: component nylon isolated ( or Delrin )

S: component shell is shorting to optical table (except oven)

G:  optical table ground

 

I failed to maximize TRY the pds.

  9933   Thu May 8 17:25:17 2014 steveUpdateLSCTRY 60Hz noise hunt

 I worked at the ETMY-ISCT this morning and late afternoon.  I will continue the 60 Hz noise hunt tomorrow. 

  9937   Fri May 9 11:23:11 2014 steveUpdateGreen Lockingdecreased X green light power

Green light power decreased from 3 mW to 1 mW at the ETMX-ISCT shutter. More later.

  9941   Mon May 12 14:42:25 2014 steveUpdateendtable upgradeoptical table enclosure wall proposal and table at ETMY

Quote:

 Sanwiched wall as shown: 1" clear acrylic, 2 layers of 0.004" thick "window tint", 1 layer of  0.007" thermashield  and  0.125" yellow acrylic

Visibility: 70 %,    Transmission of 1064 nm  2-3 % at 0-50 degrees incident,   power density  ~ 0.7 W/mm2

Max power 100 mW

        

More details about this east end  " acrylic + "   enclosure ( optical table cover ) can be found elog entry 6210, 7194 and  7106

 

Window tinted layer transmission plot is below.

 

We have a film which may meet your requirements and the values are shown below:

         

               Wavelength (nm)              Transmission                     Reflectance(front)            Reflectance (back)

 

                        1060                               .0772                               .604                                     .759

 

                        1070                               .0723                               .615                                     .772

 

These values are taken from the LBNL Optics 6 program and if you have access to that program, the NFRC ID for the film is 202.   If you do not have access to the program, I have a captured the graph which may be of some help.  I apologize for the appearance of the graph but someone at LBNL decided it would look better with a dark gray background – the yellow is the transmission curve, the blue is the reflectance (front) and the green is the reflectance (back).

 

 

The film is referred to as “Hilite 70” and has a 72% visible light transmission.  These results were obtained with the film mounted on 1/8” clear glass.

 

I

 

 

 

 

 

Saint-Gobain Performance Plastics

www.solargard.com

 

Please consider your environmental responsibility before printing this email.

 

 

 

Attachment 1: Hilite70.jpg
Hilite70.jpg
Attachment 2: ETMY-ISCT.jpg
ETMY-ISCT.jpg
Attachment 3: RoscoThermashield.pdf
RoscoThermashield.pdf
  9965   Fri May 16 16:08:12 2014 steveUpdateLSCIsolating base plates

 Electronic components should be ISOLATED as they are installed on the optical tables.

This is essential to avoid ground loops, 60 Hz and harmonic peaks in the spectrum. We have just got some made.

Please only use it for this reason. Earlier black delrin base plates were used up in not needed places.

 

The anodized Aluminum base plates with magenets certainly will conduct.

 

Attachment 1: ISObaseplates.jpg
ISObaseplates.jpg
  10007   Mon Jun 9 09:41:06 2014 steveUpdatesafetysafety training

2014 surf students Nichin and Akhil received 40m specific basic safety training last week.

Attachment 1: 2014surfs.jpg
2014surfs.jpg
  10069   Thu Jun 19 10:39:22 2014 steveUpdatesafetysurf safety training

 

 Andres Medina and Andrew "Harry" Hall received 40m specific safety training. They did general safety already and their laser safety training will be this after noon.

Attachment 1: 2014surfsAA.jpg
2014surfsAA.jpg
  10071   Thu Jun 19 14:12:45 2014 steveUpdatesafetyoptical table scans

 

 PSL, AP, ETMY and ETMX optical tables were scanned for stay beam.

  10075   Thu Jun 19 17:11:52 2014 steveUpdatePEMit is warmer today

 The PSL HEPA was running at 30VAC-variac. It is 1 degree C warmer than usual. The HEPA fan motor turned up to 60 V

Attachment 1: warmertoday.png
warmertoday.png
  10081   Fri Jun 20 14:42:57 2014 steveUpdateSUSvac illuminators turned off
  10131   Mon Jul 7 08:13:41 2014 steveUpdateGeneralyes,there was firework
Attachment 1: 8days.png
8days.png
  10350   Fri Aug 8 11:22:35 2014 steveSummarySUSoplev laser summary

 

                  2005              ALL oplev servos use Coherent DIODE LASERS # 31-0425-000, 670 nm, 1 mW

    Sep. 28, 2006              optical lever noise budget with DC readout in 40m,  LIGO- T060234-00-R, Reinecke & Rana

    May  22, 2007              BS, SRM & PRM  He Ne 1103P takes over from diode

    May  29, 2007              low RIN He Ne JDSU 1103P selected, 5 purchased sn: T8078254, T8078256, T8078257, T8078258 & T8077178 in Sep. 2007

    Nov  30, 2007               Uniphase 1103P divergence measured

    Nov. 30, 2007               ETMX old Uniphase 1103P  from 2002 dies: .............., running time not known......~3-5 years?

    May 19, 2008               ETMY old Uniphase 1103P from 1999 dies;.....................running time not known.....~    ?

    Oct.  2, 2008                ITMX & ITMY are still diodes, meaning others are converted to 1103P earlier

 

                     JDSU 1103P were replaced as follows:

   May 11, 2011                ETMX replaced, life time 1,258 days  or 3.4 years

   May 13, 2014               ETMX , LT 1,098 days or 3 y

   May 22, 2012               ETMY,  LT 1,464 days or  4 y

   Oct.  5, 2011                BS & PRM, LT 4 years,  laser in place at 1,037 days or 2.8 y

   Sep. 13, 2011               ITMY  old 1103P &    SRM    diode laser replaced by 1125P  ..........old He life time is not known, 1125P in place 1,059 days or 2.9 y

   June 26, 2013              ITMX 622 days or 1.7 y    note: we changed because of beam quality.........................laser in place 420 days or 1.2 y

 

  Sep. 27, 2013               purchased 3 JDSU 1103P lasers, sn: P893516, P893518, P893519 ......2 spares ( also 2 spares of 1125P of 5 mW & larger body )

 

  10362   Mon Aug 11 10:23:39 2014 steveSummarySUSoplev laser summary updated

Quote:

 

                  2005              ALL oplev servos use Coherent DIODE LASERS # 31-0425-000, 670 nm, 1 mW

    Sep. 28, 2006              optical lever noise budget with DC readout in 40m,  LIGO- T060234-00-R, Reinecke & Rana

    May  22, 2007              BS, SRM & PRM  He Ne 1103P takes over from diode

    May  29, 2007              low RIN He Ne JDSU 1103P selected, 5 purchased sn: T8078254, T8078256, T8078257, T8078258 & T8077178 in Sep. 2007

    Nov  30, 2007               Uniphase 1103P divergence measured

    Nov. 30, 2007               ETMX old Uniphase 1103P  from 2002 dies: .............., running time not known......~3-5 years?

    May 19, 2008               ETMY old Uniphase 1103P from 1999 dies;.....................running time not known.....~    ?

    Oct.  2, 2008                ITMX & ITMY are still diodes, meaning others are converted to 1103P earlier

 

                     JDSU 1103P were replaced as follows:

   May 11, 2011                ETMX replaced, life time 1,258 days  or 3.4 years

   May 13, 2014               ETMX , LT 1,098 days or 3 y

   May 22, 2012               ETMY,  LT 1,464 days or  4 y

   Oct.  5, 2011                BS & PRM, LT 4 years,  laser in place at 1,037 days or 2.8 y

   Sep. 13, 2011               ITMY  old 1103P &    SRM    diode laser replaced by 1125P  ..........old He life time is not known, 1125P in place 1,059 days or 2.9 y

   June 26, 2013              ITMX 622 days or 1.7 y    note: we changed because of beam quality.........................laser in place 420 days or 1.2 y

 

  Sep. 27, 2013               purchased 3 JDSU 1103P lasers, sn: P893516, P893518, P893519 ......2 spares ( also 2 spares of 1125P of 5 mW & larger body )

 

      May  13, 2014             ETMX,  .............laser in place 90 d

      May  22, 2012             ETMY, 

     Oct.  7,  2013             ETMY,  LT  503 d  or  1.4 y............bad beam quality ?

     Aug. 8,  2014              ETMY,  .............laser in place   425 days  or  1.2 y

 

  10518   Thu Sep 18 10:08:07 2014 steveSummarySUSoplev laser summary updated

 

Quote:

 

Quote:

 

                  2005              ALL oplev servos use Coherent DIODE LASERS # 31-0425-000, 670 nm, 1 mW

    Sep. 28, 2006              optical lever noise budget with DC readout in 40m,  LIGO- T060234-00-R, Reinecke & Rana

    May  22, 2007              BS, SRM & PRM  He Ne 1103P takes over from diode

    May  29, 2007              low RIN He Ne JDSU 1103P selected, 5 purchased sn: T8078254, T8078256, T8078257, T8078258 & T8077178 in Sep. 2007

    Nov  30, 2007               Uniphase 1103P divergence measured

    Nov. 30, 2007               ETMX old Uniphase 1103P  from 2002 dies: .............., running time not known......~3-5 years?

    May 19, 2008               ETMY old Uniphase 1103P from 1999 dies;.....................running time not known.....~    ?

    Oct.  2, 2008                ITMX & ITMY are still diodes, meaning others are converted to 1103P earlier

 

                     JDSU 1103P were replaced as follows:

   May 11, 2011                ETMX replaced, life time 1,258 days  or 3.4 years

   May 13, 2014               ETMX , LT 1,098 days or 3 y

   May 22, 2012               ETMY,  LT 1,464 days or  4 y

   Oct.  5, 2011                BS & PRM, LT 4 years,  laser in place at 1,037 days or 2.8 y

   Sep. 13, 2011               ITMY  old 1103P &    SRM    diode laser replaced by 1125P  ..........old He life time is not known, 1125P in place 1,059 days or 2.9 y

   June 26, 2013              ITMX 622 days or 1.7 y    note: we changed because of beam quality.........................laser in place 420 days or 1.2 y

 

  Sep. 27, 2013               purchased 3 JDSU 1103P lasers, sn: P893516, P893518, P893519 ......2 spares ( also 2 spares of 1125P of 5 mW & larger body )

 

      May  13, 2014             ETMX,  .............laser in place 90 d

      May  22, 2012             ETMY, 

     Oct.  7,  2013             ETMY,  LT  503 d  or  1.4 y............bad beam quality ?

     Aug. 8,  2014              ETMY,  .............laser in place   425 days  or  1.2 y

 

      Sept. 5, 2014              new 1103P, sn P893516  installed at SP table for aLIGO oplev use qualification

     

  10523   Mon Sep 22 10:18:58 2014 steveUpdatePEMlab temperatures

 

 

Attachment 1: summerheat.png
summerheat.png
  10560   Thu Oct 2 14:36:52 2014 steveUpdatePEMoil drops on vertex crane

Quote:

 

 KroneCrane Fred inspected and certified the 3 40m cranes for 2014. The vertex crane crane was load tested at fully extended position.

 Small oil drops were found during prevent inspection of the vertex crane. They were wiped off. It took 231 days to grow this size.

Attachment 1: VertexOilDrops.jpg
VertexOilDrops.jpg
  10665   Tue Nov 4 10:40:46 2014 steveUpdatePEMlab temperatures and particle counts

 

 

Attachment 1: PEM100d.png
PEM100d.png
  10761   Mon Dec 8 09:03:49 2014 steveUpdatePEMair cond maintenance tomorrow morning

 

 AC maintenance is scheduled from 8am till 11am tomorrow morning.

  10773   Wed Dec 10 14:26:13 2014 steveUpdatePEMair cond maintenance and particle plot

Quote:

 

 AC maintenance is scheduled from 8am till 11am tomorrow morning.

 IFO air condition maintenance will continue tomorrow morning and it should be finished by 11:30AM

 We have new guys taking over this job: Sal and Chris so it takes longer. The units will be shut down for a bit.

They will not enter the IFO lab. The CES housed units will be worked on.

Attachment 1: 05.png
05.png
  11083   Fri Feb 27 10:25:24 2015 steveUpdateCamerasquad picture problem

MUX input 7 to ITMXF camera cable was replaced by temporary cable labeled as 888

The problem remains to be the same black stripe at the bottom of the image The single picture is OK.

Attachment 1: quadMUX.jpg
quadMUX.jpg
  11148   Thu Mar 19 17:11:32 2015 steveSummarySUSoplev laser summary updated

           March  19, 2015   2  new  JDSU 1103P, sn P919645 & P919639 received from Thailand through Edmond Optics. Mfg date 12/2014............as spares

  11178   Fri Mar 27 10:38:40 2015 steveUpdateVACvac rack UPS battery replaced

Batteries replaced after 3.5 years with Amstron AP-1250F2,  8x 12V 6Ah

Quote:

APC Smart -UPS 2200   model: SUA2200RM2U   batteries were replaced by compatible RBC43, 8x  12V5A

 

Attachment 1: UPSvac.jpg
UPSvac.jpg
  11227   Mon Apr 20 16:42:48 2015 steveUpdateSUSPRM and BS oplev laser replaced

The laser below is dead. JDSU 1103P, SN P845655 lived for 3.5 years.

Quote:

 

JDSU 1103P died after 4 years of service. It was replaced with new identical head of 2.9 mW output. The power supply was also changed.

The return spots of 0.04 mW  2.5 mm diameter on qpds are BS  3,700 counts and PRM 4,250 counts.

 

It was replaced by JDSU P/N 22037130,( It has a new name for 1103P Uniphase ) sn P919639 of mfg date 12-2014

Beam shape at 5 m nicely round. Output power 2.8 mW of 633 nm

BS spot size on qpd ~1 mm &  60 micro W

PRM spot size on qpd ~1 mm & 50 micro W

Attachment 1: newOplevLaser.png
newOplevLaser.png
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