 Thu Apr 21 14:39:43 2011, steve, Update, RF System, new strain relieved N connectors at AP 
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| New right angle PVC, 2 x 2 x 1/4" installed at the AP table to strain relief the 1/4" spiral corrugated RF coaxes. |
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Thu Apr 21 15:03:29 2011, steve, Update, Computers, juction board finds home
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The anti aliasing box was opened up at the back to accommodate the junction board and the SCSI cable towards the ADC. Aluminum plate was attached to
the bottom to hold the strain relief clamp.
Three more hanging junction cards will be replaced in this manner. |
 Thu Apr 21 15:20:46 2011, steve, Update, PEM, PSL enclosure work today
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Quote:
The east side window guides will be replaced by one long U-channel. There will be drilling into 2x2 steel frame. It should be done |
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Mon May 2 13:43:05 2011, steve, Frogs, Photos, birthday boys
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| .....Happy.... Birthday.... to.... Joseph... and... Jamie...Happy....Birthday..... to.... You............sing with us........Happy Birthday.....to you |
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Mon May 2 17:10:55 2011, steve, Update, SUS, PRM oplev
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The returning spot diameter on the qpd ~10 mm. In order to reduce the spot size I moved the f 1145 mm lens toward the PRM ~ 25 cm. The spot size was
reduced to ~8 mm, 3200 counts.
I'll try to find an other lens tomorrow. |
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Tue May 3 15:59:22 2011, steve, Frogs, Photos, X-mas comes early
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The little red all terrain cargo wagon 40" x 18" has just arrived on pneumatic wheels.
Model #29, 200 lbs max load at 26 PSI, minimum age requirement 1.5 years |
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Tue May 3 16:20:13 2011, steve, Update, SUS, PRM & BS oplevs are ready
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Quote:
The returning spot diameter on the qpd ~10 mm. In order to reduce the spot size I moved the f 1145 mm lens toward the PRM ~ 25 cm. The spot |
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Thu May 5 10:19:22 2011, steve, Update, PSL, PSL-FSS_RMTEMP is back
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| Valera and I installed the the temp sensor and the interface box that Rana fixed. This may help with diagnosing the PSL drift. |
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Thu May 5 15:05:06 2011, steve, Update, PSL, PSL-FSS_RMTEMP is not back
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Quote:
Valera and I installed the the temp sensor and the interface box that Rana fixed. This may help with diagnosing the |
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Thu May 5 15:33:37 2011, steve, Configuration, RF System, LSC rack
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New right angle PVC front panel with SMA bulkhead connectors are in place. The connections are still lose. It is ready for Suresh to finalise his vision
on it. |
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Fri May 6 10:20:00 2011, steve, Summary, SAFETY, 2011 safety audit
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The emphasis of this annual safety audit was on safe electrical housekeeping on March 3, 2011
Safety audit correction list for the electric shop:
1, install breaker panel door in room 101
2, install conduit- AC out let in the east arm for USB camera table and
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Fri May 6 15:59:40 2011, steve, Update, VAC, TP3 fore pump replaced
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Dry fore pump of TP3 replaced by brand new Varian SH-110 at 1.1 Torr_75,208 hrs
The annuloses were closed off for 25 minutes. We are back to VACUUM NORMAL mode.
The TP3 fore line pressure dropped to 44 mTorr at 25 minutes in operation.......9.4mTorr at day 2 with full annulos load |
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Fri May 6 17:11:55 2011, steve, Update, SUS, SRM-oplev cable
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| The SRM qpd cable was removed from the BS-table. It's path was changed from 1x4 to ITMY-table following the inner cable tray. |
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Tue May 10 11:14:44 2011, steve, Update, PSL, PSL-QPD_ANG qpd optimized
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Valera and I placed F 572.7 mm lens ~15 cm away from the ang qpd (in the same mount with ND filter) so that two qpds see different combination
of ang and pos motion - there was no lenses prior to this change. The beam diameter is reduced to ~half . |
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Wed May 11 11:05:45 2011, steve, Update, SUS, ETMX_OPLEV : He-Ne replaced
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Quote:
I found that a He-Ne laser which has been used for ETMX_OPLEV was NOT giving the light. |
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Wed May 11 11:24:59 2011, steve, Update, SUS, SRM-oplev qpd is back
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Quote:
The SRM qpd cable was removed from the BS-table. It's path was changed from 1x4 to ITMY-table following the inner cable tray. |
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Wed May 11 13:54:32 2011, steve, Update, LSC, LSC power supplies
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Aux- rack _1Y2 is just behind 1Y3 It contains Kepco Analoge DC power supplies for +- 5, 15 and 24V
Placing these power supplies away from the LSC rack was an effort to minimize pick up from them.
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Thu May 12 08:54:11 2011, steve, Update, IOO, IP_POS cable found
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Quote:
A cable for IP_POS has been disconnected at the LSC rack, 1Y2. Due to it currently no IP_POS signal |
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Thu May 12 09:00:23 2011, steve, Update, General, optical table covers must be used
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| I found ITMX-ISCT and BS-ISCT ( IFO sensing-control table) not covered this morning. Please do not leave tables open. |
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Mon May 16 17:11:28 2011, steve, Update, Electronics, strain relieved 1X1
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| 1X1 is strain relieved in the back. I will use similar approach on the rest of the racks . |
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Thu May 19 17:53:03 2011, steve, Update, CDS, AA filter box modified at 1X5
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Quote:
[Steve, Joe] |
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Fri May 27 17:52:53 2011, steve, Update, LSC, LSC rack cables strain relieved & labeled
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LSC rack 1Y2 cables are strain relieved and labeled. Spare and/or obsolete cables are laid out on the top of the beam tube and on the outside of the
rack.
The POY 110 MHZ demodboard has a very touchy position in the VME crate. Watch out for it! It has to be fixed. |
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Tue May 31 11:34:13 2011, steve, Summary, SAFETY, safety glasses checked
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| 1064 nm transmison were measured of 40m safety glasses as shown . Their performance did not degrade. They are as good as their labels. |
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Tue May 31 17:30:42 2011, steve, Update, SUS, ETMY damping restored
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| ETMY's watch dogs were found tripped. They were restored. |
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Fri Jun 3 18:12:03 2011, steve, Update, Computers, no PEM channels
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AA filter box was removed and modified at 1Y7 today. The -5V power supply was current limited when I plugged it back in. It was removed for medical attention.
NO PEM channels available! because of this.
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Mon Jun 6 17:28:31 2011, steve, Update, Computers, still, no PEM channels
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Quote:
AA filter box was removed and modified at 1Y7 today. The -5V power supply was current limited when I plugged it back in. It was removed for |
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Tue Jun 7 16:11:09 2011, steve, Update, Cameras, ITM camera lenses changed
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Computar 75-12.5 zooms were installed for closer look at the resonant spots. Their alignment and focus needs more loving adjustment.
Atm 1, ITMX ( it was 10-40 mm Tamron before )
Atm 2, ITMY ( it was 12mm wide angle showing the towers before ) |
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Thu Jun 9 10:38:30 2011, steve, Update, PSL, PMC needs help
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| The PMC is losing power. |
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Tue Jun 14 09:24:36 2011, steve, Configuration, Photos, SUS binary IO chassis 2 and 3 moved from 1X5 to 1X4
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Quote:
While preping 1X4 for installation of c1lsc, we removed some old VME crates that were no longer in use. This freed up lots of space |
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Thu Jun 16 08:45:14 2011, steve, Update, SUS, Vertex SUS Binary Output Boxes removed
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Quote:
- I was investigating the SUS whitening issue. |
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Fri Jun 17 08:03:48 2011, steve, Update, SUS, ITMY sus damping restored
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ITMY sus damping restored.
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Mon Jun 20 09:04:13 2011, steve, Update, SUS, ETMX damping restored
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| ETMX sus damping restored |
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Mon Jun 20 16:44:02 2011, steve, Update, ABSL, I-P curve of LightWave M126-1064-700
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Put the serial numbers into the elog. So we can identify the laser and controller in the future.
The old days the NPRO ( inside the MOPA ) was running ~1.7A 500 mW |
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Tue Jun 21 16:11:13 2011, steve, Update, SAFETY, surf safety training
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| 40m surfs: Nicole Ing, Iswita Saikia and Sonali Mohapatra received 40m specific safety training today. |
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Thu Jun 23 10:17:49 2011, steve, Update, PSL, AP table is open to PSL again
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| Access to the north side of the PSL table is blocked by the 8" beam guard. This opens the beam pathways between them. |
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Thu Jun 23 10:35:12 2011, steve, Update, Computers, old computers leaving the lab
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| Rod Luna picked up these computers for Larry Wallace yesterday: Dell Inspiron 530, Dell Dimension 4600 and SunBlade 1000 |
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Fri Jun 24 07:40:23 2011, steve, Update, SUS, PRM damping restored
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The PRM sus damping restored. C1:SUS-PRM_SDPD_VAR is still 20-30mV and going up. Side gain turned on. This pulled it down to 5-8 mV
Why is the side osem sensing voltage 4.4V ? It can not be higher than ~2.4V.......something is rotten in the state of Denmark?
Edit by KI: |
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Fri Jun 24 07:49:23 2011, steve, Update, ABSL, I-P curve of LWE with serial numbers
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Quote:
The I-P curve was |
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Fri Jun 24 10:38:01 2011, steve, Update, Cameras, ITMY camera gets fixed
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ITMY gets new Tamron M118FM50 that has improved close focusing. It is a small fixed focal length camera so the video tube cover can be put on.
The Watec LCL-902K 1/2" ccd camera was losing it power supply voltage because of bad connection. It was replaced. |
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Mon Jun 27 16:57:06 2011, steve, Update, Photos, Haixing is back
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| He has moved the levitation stuff for his surf student to Jan's lab in W-Bridge. |
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Tue Jun 28 10:11:13 2011, steve, Update, IOO, Power incident on REFL11 and REFL55
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Quote:
I measured the power incident on REFL11 and REFL55. Steve was concerned that it is too high. If we consider this elog |
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Tue Jun 28 15:23:21 2011, steve, Update, Electronics, Coilcraft RF-design kits are restocked
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| Our design kits are full again. They are waiting for a new brilliant PD design. |
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Wed Jun 29 11:45:54 2011, steve, Update, General, where are we storing PDs ?
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| Photo diodes stored in the east arm cabinet E4: ALL PDs meet here, fast or slow...... |
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Thu Jun 30 17:24:46 2011, steve, Update, SAFETY, safety interlocks
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Lightwave M126-1064-700 lasers sn415 at east end of the Y arm and sn201 at the AP table are connected individually to one
each EMERGENCY LASER SHUT OFF SWITCH. |
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Tue Jul 5 08:32:38 2011, steve, Update, PEM, bad air quality in the lab
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The fireworks of yesterday showing up in the lab. Pasadena out side air 6.6 million cfm for 0.3 micron particles and 1.5 million cfm for
0.5 micron size. |
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Tue Jul 5 13:35:56 2011, steve, Update, SUS, PRM damping restored
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The PRM sus damping was restored. It's side rms motion came down from 35 to 4 mV immediately. Lab air quality is
back to normal.
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Thu Jul 7 10:25:34 2011, steve, HowTo, General, cleaning out refregerator
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| Please ask the owner unless it is rotten. Do not put food into garbage can inside. Take them outside so you are not inviting ants ! |
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Thu Jul 7 13:57:28 2011, steve, HowTo, SAFETY, how not to
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I found baked allen keys on the top of the clean optics cabinet. Somewhat heavy box that can come down in an earthquake on our heads.
NOTHING SHOULD GO ON THE TOP OF THE CABINETS OR RACKS except small
plastic boxes that storing our clean clothing. |
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Mon Jul 11 14:03:37 2011, steve, HowTo, lore, how to visit your old lab
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Alberto is visiting us from Australia. He brought some terrific presents. It is going to be very demanding task to wait for the rest of the 40m team
to return from Wales to taste coffee: PNG Peaberry of Wagonga, Monsooned Malabar of Jindebah and Signature Blue Blend of Cosmorex. |
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Fri Jul 15 16:14:00 2011, steve, Update, SUS, BS oplev error signal spectra
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