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ID Date Authorup Type Category Subject
  12788   Thu Feb 2 12:17:48 2017 SteveUpdateGeneral USB microscope

This AmScope microscope would have 3.5x-180x magnification, calibratable measurement function, 5MP picture and good working distance to work on printed circuit boards.

 

  12802   Mon Feb 6 10:05:28 2017 SteveUpdateSUSclamped cables

The bottom 5 cable connections from Sat-Amp to Whittering Filter at 1X5 were clamped today.

Attachment 1: clamped.jpg
clamped.jpg
  12808   Tue Feb 7 16:23:49 2017 SteveUpdateGeneralpower interruption tomorrow

                                                                                                                                   received this note: at 4:11pm Tuesday, Feb 7, 2017

**PLEASE POST**

 

Building:         Campus

    

Date:             Wednesday, February 8, 2017

          

Time:             7:30 AM – 8:30 AM  

 

Contact:          Rick Rodriguez x-2576

           

Pasadena Water and Power (PWP) will be performing a switching operation of the

Caltech Electrical Distribution System that is expected to be transparent to Caltech,

but could result in a minor power anomaly that might affect very sensitive equipment.

 

IMPACT: Negligible impact......?

There may be temporary  power interruption tomorrow!

PS:we did not see any effect   

  12813   Thu Feb 9 08:03:08 2017 SteveUpdateGeneral USB microscope ordered

http://www.amscope.com/3-5x-180x-boom-stand-trinocular-zoom-stereo-microscope-with-144-led-ring-light-and-10mp-camera.html will be ordered today.

The actual unit we are getting has lockable zoom for better repeatability after calibration: SM-3NTPZZ-144

Quote: CWQ6-020817

 

 

  12843   Tue Feb 21 17:05:14 2017 SteveUpdateGeneralProjector lamp replaced

This bulb was blown out on Feb 4, 2017 after 2 months of operation.

 

Attachment 1: blownup.jpg
blownup.jpg
  12848   Thu Feb 23 14:50:26 2017 SteveUpdateGeneral USB microscope returned

The microscope shipped back to the vendor for credit yesterday.

Quote:

http://www.amscope.com/3-5x-180x-boom-stand-trinocular-zoom-stereo-microscope-with-144-led-ring-light-and-10mp-camera.html will be ordered today.

The actual unit we are getting has lockable zoom for better repeatability after calibration: SM-3NTPZZ-144

Quote: CWQ6-020817

 

 

 

  12853   Mon Feb 27 15:33:10 2017 SteveUpdateVACRGA scan at day 130

Valve configuration: vacuum normal

Vacuum envelope: 23.5 C

RGA head: 46.6 C

 

Attachment 1: rgascan@130d.png
rgascan@130d.png
  12858   Wed Mar 1 08:28:04 2017 SteveUpdateOptical Leversoplev laser RIN

Gautam and Steve,

New JDSU 1103P HeNe oplev laser RIN was measured on the SP table with cover on.

This is the beginning of an effort to improve oplev laser noise.

 

Attachment 1: RIN_1103P.png
RIN_1103P.png
Attachment 2: RIN_HeNe.png
RIN_HeNe.png
  12860   Wed Mar 1 17:25:28 2017 SteveUpdateLSCMCREFL condition pictures

Gautam and Steve,

 

Our MCREFL rfpd C30642GH 2x2mm beeing investigated for burned spots.

Atm1,           unused -  brand new pd

Atm2,3,4       MCREFL in place was not moved

More pictures will be posted on 40m Picassa site later. 

 

Attachment 1: IMG_3646.JPG
IMG_3646.JPG
Attachment 2: mcRefl_1.jpg
mcRefl_1.jpg
Attachment 3: mcRefl_3.jpg
mcRefl_3.jpg
Attachment 4: mcRefl_5.jpg
mcRefl_5.jpg
  12863   Thu Mar 2 13:59:04 2017 SteveUpdateOptical Leversoplev laser RIN

The laser got much better at low frequency as it warmed up. This laser is almost as good as the electronics?

Dark noise cal was the same today as it was 2 days ago.

 

Attachment 1: 1103P@2d.png
1103P@2d.png
  12866   Fri Mar 3 17:24:21 2017 SteveUpdateOptical Leversoplev laser RIN

Corrected oplev laser RIN plot at day 3

RXA:

  1. to measure RIN, the lever arm should be really short, not long.
  2. the beam should be 3x smaller than the active area of the diode
  3. the specular beam should be dumped on a razor dump.
  4. we need to make a summary page for HeNe laser testing so that we can see 24 hour specgrams of these things for ~3-4 lasers at the same time.
  5. We should add specgram stuff for the existing HeNe SUM channels on the active OLs.

GV: The channel the PD Steve is using is hooked up to C1:ALS-FC_X_F_IN. As I found out today, there can be considerable RF pickup between the C1:ALS-FC_X_F_IN and C1:ALS-FC_Y_F_IN channels, which share a common 4-pin LEMO cable - this is because the rise time of the square wave output of the Wenzel dividers is <1us, so suitability of this particular channel for the RIN measurement set up has to be reconsidered. Perhaps we can use one of the six spare PEM channels over at 1X6. 

Attachment 1: 3march17.pdf
3march17.pdf
  12868   Mon Mar 6 09:12:59 2017 SteveUpdatesafety crane inspection 2017

All 3 cranes inspected by professional Fred Goodbar of Konecranes and load tested with 450 lbs at max reach on Friday, March 3, 2017

 

 

Attachment 1: inspection_2017.jpg
inspection_2017.jpg
  12871   Mon Mar 6 16:32:36 2017 SteveUpdateGeneralold NPRO

16 years old Lightwave NPRO M126-1064-700, sn 415 power output is tripping continously to zero.

The Lightwave Controller 125/126-OPN-POS sn516 was used in this test. Settings were lowered to close to nominal values without any success.

One can not determine what is broken: head or controller. This NPRO head was under Manasa's desk.
 

  12872   Tue Mar 7 15:17:19 2017 SteveBureaucracyGeneralproperty tag

Property tag found.

Attachment 1: property_tag.jpg
property_tag.jpg
  12873   Wed Mar 8 15:28:37 2017 SteveUpdateOptical Leversoplev laser RIN

Gautam and Steve,

Quote:

Corrected oplev laser RIN plot at day 3

RXA:

  1. to measure RIN, the lever arm should be really short, not long.
  2. the beam should be 3x smaller than the active area of the diode
  3. the specular beam should be dumped on a razor dump.
  4. we need to make a summary page for HeNe laser testing so that we can see 24 hour specgrams of these things for ~3-4 lasers at the same time.
  5. We should add specgram stuff for the existing HeNe SUM channels on the active OLs.

GV: The channel the PD Steve is using is hooked up to C1:ALS-FC_X_F_IN. As I found out today, there can be considerable RF pickup between the C1:ALS-FC_X_F_IN and C1:ALS-FC_Y_F_IN channels, which share a common 4-pin LEMO cable - this is because the rise time of the square wave output of the Wenzel dividers is <1us, so suitability of this particular channel for the RIN measurement set up has to be reconsidered. Perhaps we can use one of the six spare PEM channels over at 1X6. 

We did the following:

1, switched data channel  from  C1:ALS-FC_X_F_IN to C1:PEM-MIC_1_OUT_DQ   Actual connection at 1X7 rack, input C17

    Tested channel with 1Hz, 100 mV sine wave through DV

2, placed BS into the beam path so the reflected value on the PDA100A 0.1mW,  beam od ~1mm, beam path lenght 11 cm, gain 20dB 3.7Vdc

    The full output of this 1103P 2.8 mW was saturating the PDA100A

Summery :finding it to be too good to be this good

Attachment 1: RIN.jpg
RIN.jpg
Attachment 2: RIN_1103P_rotated.pdf
RIN_1103P_rotated.pdf
  12876   Thu Mar 9 17:26:43 2017 SteveUpdateGeneralattempted ETMY picture taking

I removed the video monitoring can and replaced it with Olympus SP-570UZ camera. It has no IR blocker. The OSEM light are dominant because I can not zoom in more.

I left the camera in place so you can try it. Leave the LEXAN plate on the glass window so no accident can happen. The illuminator is on and you can turn it off-on with the manual switch, close to the camera. Camera manual is on my desk.

 

  12881   Fri Mar 10 18:00:22 2017 SteveUpdateGeneralattempted ETMY picture taking

Your technique works Koji

Attachment 1: P3100044.JPG
P3100044.JPG
Attachment 2: P3090024.JPG
P3090024.JPG
  12884   Mon Mar 13 16:47:41 2017 SteveUpdatePEMY-arm air conditon belts replaced

The east end AC unit is arching over and running rough at CES. Called for mechanic.......

Both belts were replaced and the unit is running happily.

  12885   Tue Mar 14 09:08:11 2017 SteveUpdateOptical LeversETMX HeNe is dead

ETMX oplev laser is dead. It will be replaced this after noon. Sus damping recovered.

Attachment 1: this_morning.png
this_morning.png
  12886   Tue Mar 14 10:40:30 2017 SteveUpdateSUSOSEM filters are in

We have 50 pieces in the clean cabinet.

Attachment 1: filters.jpg
filters.jpg
  12888   Tue Mar 14 15:05:18 2017 SteveUpdateOptical Levershistory of ETMX oplev laser

 

Quote:

ETMX oplev laser is dead. It will be replaced this after noon. Sus damping recovered.

This 3 years old HeNe [ JDS 1103P, sn 351889 ]  has been dying for some time or just playing possum at age 1,126 days

I did not replace the ETMX oplev laser because I was unable to bring up the the C1ASC_ETMX_OPTLEV_SERVO  medm screen on laptops.

Attachment 1: ETMX_1103P_3y.png
ETMX_1103P_3y.png
  12889   Thu Mar 16 08:22:16 2017 SteveUpdateSUSETMX damping

Finally I see what kicks the sus damping off

Quote:

Huh? So should we ask them to put the container back? Or do you have some other theory about ETMX tripping that is not garbage related?

Quote:

ETMX sus damping recovered.

Note: The giant metal garbage container was moved from the south west corner of CES months ago.

 

 

Attachment 1: laser_power_glitch.png
laser_power_glitch.png
  12890   Fri Mar 17 10:47:16 2017 SteveUpdateOptical Levers ETMX oplev laser replaced

JDSU 1103P. sn T8070866, made March 2007, output power 2.7 mW,  on pd 17,750 counts,

GV 17 March 3pm: I found the Innolight NPRO was off when I walked down to the X end earlier, possibly was accidentally tripped during the Oplev laser replacement. I turned it back on.

Quote:

 

Quote:

ETMX oplev laser is dead. It will be replaced this after noon. Sus damping recovered.

This 3 years old HeNe [ JDS 1103P, sn 351889 ]  has been dying for some time or just playing possum at age 1,126 days

I did not replace the ETMX oplev laser because I was unable to bring up the the C1ASC_ETMX_OPTLEV_SERVO  medm screen on laptops.

 

  12892   Fri Mar 17 15:30:39 2017 SteveSummarySUSoplev laser summary updated

         March  17,  2017         ETMX laser replaced at LT 3y with 1103P, sn T8070866

Attachment 1: oplev_sums.png
oplev_sums.png
  12908   Mon Mar 27 15:36:27 2017 SteveUpdatePEMparticle counter inside of PSL enclousure

 

Quote:

The logging script is multiplying by 100 instead of 10 !

Quote:

The MET#1 particle counter was moved from CES wall at ITMX to PSL enclousure south west corner at 11am.

The HEPA filter speed at the Variac was turned down to 20V from 40

This counter pumps air for 1 minute in every 20 minutes. Soft foam in bags used to minimize this shaking as it is clamped.

 

 

Some one turned up the PSL HEPA rotation voltage from 20 V to 33 ( 120V Variac ) and  X-arm AC set temp lowered to 68F

Effects at 12" height from optical table :

                                                            1.0, 0.5 & 0.3 micron particle count  goes to zero and temperature fluctuaion increased

Rotation speed voltage was set to 30V

                                                            

Attachment 1: HEPA_flow_effects.png
HEPA_flow_effects.png
  12909   Mon Mar 27 16:01:55 2017 SteveUpdatePEMX arm AC set to 68F

 

The X arm air conditioner was not regulating properly. The arm temp was warmer than usual. I requested thermistor calibration.

The mechanic reset the thermostate to 68F last week.  It was 70-71F before.

 

The ETMX oplev laser now running 4 C lower at 30 C inside the enclousure.

The ETMX optical table top is 5 C cooler  at 21 C

The ETMX concrete wall temp 20 C at 9am with flow bench on.

ETMY conrete wall  temp 23 C at 9am

  12913   Tue Mar 28 16:47:40 2017 SteveUpdatesafetyProjector bulb is out again

Three replacement bulbs ordered

Rana can discribe how it happened.

IF A LAMP EXPLODES

If a lamp explodes, the gas and broken shards may scatter inside the projector and they may comeout of the exhaust vent.
The gas contains toxic mercury.
Open windows and doors for ventilation.
If you inhale the gas or the shardsof the broken lamp enter your eyes or mouth, consult the doctorimmediately.
Quote:

This bulb was blown out on Feb 4, 2017 after 2 months of operation.

 

 

  12915   Wed Mar 29 09:24:28 2017 SteveUpdateloresummery pages

The summery pages are working at a slow motion speed. It's response time 12 minutes.

  12917   Wed Mar 29 16:38:00 2017 SteveOmnistructureTreasuresus fiber illluminated
Attachment 1: fiber.jpg
fiber.jpg
  12921   Fri Mar 31 10:16:07 2017 SteveUpdatesafetylaser safety glasses annual inspection

Laser safety glasses cleaned in " Dawn Ultra " mild soap - water solution and measured for 1064 nm transmission at 150 mW
 

Attachment 1: march2017.jpg
march2017.jpg
Attachment 2: 2017march.jpg
2017march.jpg
  12922   Fri Mar 31 16:10:33 2017 SteveUpdateTreasureLes Guthman

Les Guthman interviews  gradstudent Graig.

Main laser emergency shut off was acuated by accident during this fiming. The laser is turned on.

  12927   Tue Apr 4 11:24:21 2017 SteveUpdatesafetyProjector bulb is out again

Shipped out for repair.

Quote:

Three replacement bulbs ordered

Rana can discribe how it happened.

IF A LAMP EXPLODES

If a lamp explodes, the gas and broken shards may scatter inside the projector and they may comeout of the exhaust vent.
The gas contains toxic mercury.
Open windows and doors for ventilation.
If you inhale the gas or the shardsof the broken lamp enter your eyes or mouth, consult the doctorimmediately.
Quote:

This bulb was blown out on Feb 4, 2017 after 2 months of operation.

 

 

It is back and running fine witth bulb  4-13-2017

  12930   Thu Apr 6 15:35:44 2017 SteveUpdatePEM envioirmental noise

Building:         Central Engineering Services

     

Date:             Monday, 04/10/17          

          

Time:             7:00 AM TO 9:00 AM           

 

Notification:     Crane Activity

    

Contact:          Ben Smith, X-4190 Brad Nielsen, X-8751

 

Contractors will be removing the large vaporizer located on the South

side of CES. Vehicle access will be restricted due to crane placement

and operation, but there will be a single traffic lane available. This

work may create minor noise and vibrations.  

  12931   Fri Apr 7 13:46:23 2017 SteveUpdateSUSETMX enclosure feedthough

ETMX enclosure feedtrouh cabeling corrected.

Attachment 1: bad.jpg
bad.jpg
Attachment 2: good.jpg
good.jpg
  12932   Mon Apr 10 09:49:32 2017 SteveUpdateOptical Leversoplev laser RIN test planning

We are planning to test 3 identical 1103Ps RIN with  continous temp monitoring and control later.

Selected  temp sensor   Platinum RTD 1PT100KN1515CLA   or           RTD-830 

Temp controller  with analoge output 0-10Vdc, CNi854  and external dc pulse driven  relay

Temperature Measurement Comparison Chart
Criteria Thermocouple RTD Thermistor
Temp Range -267°C to 2316°C -240°C to 649°C -100°C to 500°C
Accuracy Good Best Good
Linearity Better Best Good
Sensitivity Good Better Best
Cost Best Good Better

Order placed 4-12-17 for sensor  RTD-830,  controller CNi8-5-4 and relay  SSRL240DC25 = ~$500.

Still need: fuse, fuse housing, on/off switch, female  AC receptical, chassy box and AC power cord.

 

  12933   Mon Apr 10 09:58:35 2017 SteveSummarySUSoplev laser summary updated

 

Quote:

                    Oct.  5, 2015              ETMY He/Ne replaced by 1103P, sr P919645,  made Dec 2014, after 2 years

                   Jan. 24, 2017              ETMY He/Ne replaced by 1103P,  sr P947049,  made Apr 2016,  after 477 hrs running hot

    Jan. 26,  2017              RIN test stared with P947034, made Apr. 2016  

    Apr.  10,  2017              purchased two 1103P from Edmund:  sr P964438 & sr P964431, made 02/2017

   

  12941   Thu Apr 13 09:48:37 2017 SteveUpdateSUSITMY-UL and ETMX sensors

Why ITMY UL can not see this earth quake? SRM and PRM are misaligned. ETMX is still not well.

We have to remember to check OSEM - magnet alignment when vented.

Attachment 1: ITMY.png
ITMY.png
Attachment 2: ITMY-UL.png
ITMY-UL.png
Attachment 3: ETMX?.png
ETMX?.png
  12953   Thu Apr 27 17:55:33 2017 SteveUpdateCameraswhich camera to use for IR scatterring pictures

Yesterday I failed to take good pictures of ETMY  resonant arm of 1064 nm with Cannon Rebel T3i in RAW 22-27Mp & JPG dual- format. UFRaw file converter worked well. The IR blocker filter seems to be too good.

Today I used Olympus SP-570UZ ( without IR blocker), in raw format of 15Mp, fl 22.4mm, 15s including 2-3s flashlight,  f/8 and auto focus  This is just too much scattered IR for the Olympus.

Overexposed raw picture' jpg is shown  at the PSL with diffraction patter of the camera.

I'll go back using  the Nikon D40 with zoom 55-200mm as this Atm2 of May 2007 : manual focus, 15s, f/4-5.6, ISO 560,  826KB

Attachment 1: P4270081RAWolym.jpg
P4270081RAWolym.jpg
Attachment 2: Img0344.jpg
Img0344.jpg
  12961   Mon May 1 17:14:58 2017 SteveUpdateCamerasETMY & MC2 ccd cameras removed

MC2 ccd camera is replaced by Olympus 570 zoom temporarly.

So as the ETMY ccd camera is replaced by Cannon Rebel.

Both viewport are under Lexan protection and covered by Aluminum foil....still, turn all lighting off if you do not want room light in the IFO

 

Do not remove Lexan shield!

 

  12964   Wed May 3 16:02:36 2017 SteveUpdateGeneralPI pzt inventory check

One is broken, two are ready to steer green and 3 available in un known condition

 

Attachment 1: IMG_3678.JPG
IMG_3678.JPG
Attachment 2: PIpztETMYgreen.jpg
PIpztETMYgreen.jpg
  12970   Thu May 4 08:00:54 2017 SteveUpdatesafetysafety training

Freshmen Rebecca Zhang as " work study undergrad "  received 40m specific basic safety training yesterday.

  12973   Fri May 5 08:41:42 2017 SteveUpdateCamerasMC2 resonant pictures

Olympus SP570 UZ - without  IR blocker, set up as Atm.3  Camera distance to MC  face ~85 cm,  IOO-MC_TRANS_SUM 16,300 counts, Lexan cover on not coated viewport.

Image mode: RAW + JPG,  M-costum,  manual focus,  Lens: Olympus 4.6 - 92 mm, f2.8 - 4.5,  Apeture: F2.8 - 8,  Image pick up device: 1/2.33" CCD (primary color filter)

Atm.1,       212k.jpg of raw 15 MB,  exp 0.025s,   apeture 2.97,  f 4.6,   iso 64,  

Atm.2,        Copied through my Cannon S100  (  3.3 MB.jpg of raw from UFraw photo shop )I will look up the original raw file for details.

 

Attachment 1: P5040028MC2c.jpg
P5040028MC2c.jpg
Attachment 2: IMG_3682.JPG
IMG_3682.JPG
Attachment 3: IMG_3688.JPG
IMG_3688.JPG
  12978   Tue May 9 15:23:12 2017 SteveConfigurationComputerscatastrophic multiple monitor failures

Gautam and Steve,

Surge protective power strip was install on Friday, May 5 in the Control Room

Computers not connected to the UPS are plugged into Isobar12ultra.

Quote:

That's a new failure mode. Probably we can't trust the power to be safe anymore.

Need Steve to order a couple of surge suppressing power strips for the monitors. The computers are already on the UPS, so they don't need it.

 

Attachment 1: Trip-Lite.jpg
Trip-Lite.jpg
  12994   Tue May 16 16:16:16 2017 SteveUpdatesafetysafety training

 Early surfs of India Jigyasa and Kaustubh received basic 40m specific safety traning.

Attachment 1: surfs2017.jpg
surfs2017.jpg
  12995   Wed May 17 08:19:59 2017 SteveUpdateSUS4.1M earthquake

Sus dampings recovered. ETMY oplev needs to be recentered.

GV May 17 11am: I shut down the BS, SRM, ITMX and ITMY watchdogs, as the coil-driver boards for these optics are presently not installed.
 

Attachment 1: eq_4.1_SantaBarbara.png
eq_4.1_SantaBarbara.png
Attachment 2: 4.1m_Isla_Vista_CA.png
4.1m_Isla_Vista_CA.png
  12996   Wed May 17 11:10:31 2017 SteveUpdateCamerasMC2 CCD video camera back in place

Olympus camera is removed and our old CCD camera is back to monitor the face of MC2

Quote:

Olympus SP570 UZ - without  IR blocker, set up as Atm.3  Camera distance to MC  face ~85 cm,  IOO-MC_TRANS_SUM 16,300 counts, Lexan cover on not coated viewport.

Image mode: RAW + JPG,  M-costum,  manual focus,  Lens: Olympus 4.6 - 92 mm, f2.8 - 4.5,  Apeture: F2.8 - 8,  Image pick up device: 1/2.33" CCD (primary color filter)

Atm.1,       212k.jpg of raw 15 MB,  exp 0.025s,   apeture 2.97,  f 4.6,   iso 64,  

Atm.2,        Copied through my Cannon S100  (  3.3 MB.jpg of raw from UFraw photo shop )I will look up the original raw file for details.

 

 

  13008   Tue May 23 16:33:00 2017 SteveUpdateOptical LeversBeam Profiling Results

You may compare your results with this.

RXA: please no, that's not the right way

  13018   Tue May 30 13:36:58 2017 SteveUpdateOptical LeversETMY Oplev HeNe is replaced

Finally I reallized what is killing the ETMY oplev laser. Wrong  power supply, it  was driving the HeNe laser by 600V higher voltage than recommended. Power supply 101T-2300Vdc replaced by 101T-1700Vdc ( Uniphase model 1201-1, sn 2712420 )

The laser head 1103P, sn P947049 lived for 120 days and it was replaced by sn P964431   New laser output 2.8 mW,  quadrant sum 19,750 counts

 

Attachment 1: oplevETMY120d.png
oplevETMY120d.png
  13030   Thu Jun 1 16:21:55 2017 SteveUpdateSUS wire standoffs update

Ruby wire standoff received from China. I looked one of them with our small USB camera.  They did a good job. The  long edges of the prism are chipped.

The v-groove cutter must avoid them. Pictures will follow.

 

  13039   Mon Jun 5 10:30:45 2017 SteveUpdateSUSruby wire standoff pictures

Atm 1 & 5, showing the ruby R ~10 mm as it is seated on Al SOS test mass

Atm. 2, 3 & 4  chipped long edges with SOS sus wire OD 43 micron as  calibration

Quote:

Ruby wire standoff received from China. I looked one of them with our small USB camera.  They did a good job. The  long edges of the prism are chipped.

The v-groove cutter must avoid them. Pictures will follow.

 

 

Attachment 1: A087_R.png.bmp
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Attachment 2: A097_chipped_edges.png.bmp
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Attachment 3: A099_cal_wire.png.bmp
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Attachment 4: A101_cal_wire_43_micron.png.bmp
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Attachment 5: Al_SOS_R39mm.jpg
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