 Mon Mar 9 17:11:38 2009, Alberto, Configuration, oplevs, optical levers centering
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Yoichi, Alberto
this afternoon we centered the optical levers for all the optics.
To do that we first ran the alignment scripts for all the cavities. |
 Sat Mar 14 22:53:12 2009, Kakeru, Update, oplevs, arm cavity oplev calibration 
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I finished a calibration of optical levers.
To calibrate oplevs, I locked appropriate cavity and tilted a mirror.
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Fri Mar 20 15:37:58 2009, Kakeru, Update, oplevs, arm cavity oplev calibration
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I calibrated several oplevs with OSEM signal as a confirmation of my fitting method the method is:
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Thu Mar 26 09:08:18 2009, Kakeru, Update, oplevs, arm cavity oplev calibration
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I uploaded a document about my oplev calibration.
/cvs/cds/caltech/users/kakeru/oplev_calibration/oplev.pdf
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Fri May 8 04:46:01 2009, rana, yoichi, Summary, oplevs, BS/PRM/SRM table bad!
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We went to center the oplevs because they were far off and found that (as usual) the numbers changed
a little after we carefully centered the oplevs and came back to the control room.
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Tue May 12 17:26:56 2009, pete, Update, oplevs, etmy oplev quad was bad
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Pete, Rob
After looking at some oplev noise spectra in DTT, we discovered that the ETMY quad (serial number 115) was noisy. Particularly, in
the XX_OUT and XX_IN1 channels, quadrants 2 (by a bit more than an order of magnitude over the ETMX ref) and 4 (by a bit less than an order of mag). |
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Wed May 13 03:05:13 2009, pete, Update, oplevs, etmy oplev quad was bad
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Quote:
Pete, Rob |
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Tue Jun 2 23:55:45 2009, Alberto, Update, oplevs, oplevs centerd
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Tonight I centered the oplevs for ITMX/Y, SRM, PRM, BS.
After doing that I noticed that the BS drifted a little from where I had set it. |
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Tue Jun 9 11:29:07 2009, Jenne, Update, oplevs, Measured ETMY oplev beam size...put everything back
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I measured the ETMY oplev beam size at a couple different distances away from the HeNe by taking out the steering mirror and letting the light propagate
a ways. I put the steering mirror back, aligned the oplev, and was able to relock the Yarm, so I think it's all back as it has been the last couple
of weeks. |
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Fri Jul 24 17:20:48 2009, Jenne, Update, oplevs, ETMY oplev is iffy
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ETMY oplev is currently a work in progress. The HeNe beam is hitting the photodiode, but the spot size there is pretty much the size of the entire
QPD. Thus, the ETMY oplev isn't really useful right now. I'm re-figuring things out (note to self: close to the laser, you have to use Gaussian
optics...regular ray tracing doesn't really work), and hopefully will have the oplev back under control by the time Alberto is finished realigning the |
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Mon Jul 27 17:48:44 2009, Jenne, Update, oplevs, ETMY oplev is still down for the count
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| ETMY oplev is still out of order. Hopefully I'll get it under control by tomorrow. |
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Fri Dec 4 21:48:01 2009, Jenne, Update, oplevs, Oplevs centered, IP_POS and IP_ANG centered
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[Jenne Koji]
We aligned the full IFO, and centered all of the oplevs and the IP_POS and IP_ANG QPDs. During alignment of the oplevs, the oplev servos
were disabled. |
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Fri Dec 4 23:17:55 2009, rob, Update, oplevs, Oplevs centered, IP_POS and IP_ANG centered
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Quote:
[Jenne Koji] |
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Sat Dec 5 01:40:11 2009, Koji, Update, oplevs, Oplevs centered, IP_POS and IP_ANG centered
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We restarted daqd and it did restored the problem
http://lhocds.ligo-wa.caltech.edu:8000/40m/Computer_Restart_Procedures#fb40m
Then restart the 'daqd' process:'telnet fb40m 8087', type "shutdown" at the prompt. The framebuilder |
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Sat Dec 5 18:23:48 2009, Koji, Update, oplevs, Oplevs centered, IP_POS and IP_ANG centered
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NOTE: HEPA is on at its full.
[[[OK]]] Align the suspended optics (by Rob) |
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Fri Feb 19 02:38:32 2010, Koji, Configuration, oplevs, Intsant green oplevs for ITMs shooting from the ends
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I set up instant green oplevs for ITMs.
A green laser pointer has been set on each end table. It illuminates the ITM center. The beam goea through the ETM substrate.
The reflected green beam returns to the ETM if the ITMs are aligned. Even though the reflected beam to the end is too big, this can |
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Wed Mar 13 11:34:24 2013, Steve, Update, optical tables, table covers moved to CES
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The two acrylic optical table enclosures were moved from the carpenter shop to CES. I need to order windows. The latest quotes from Laseroptik are posted at the wiki / aux_optics page.
Things to do: order windows, draw and order window flange, install surgical tubing seals, buy and line enclosures with IR shield films. |
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Mon Mar 25 18:58:09 2013, Albert Yang, Update, optical tables, Optical Table Toolboxes
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For those of you who spend annoying amounts of time looking for tools, fear no more. Toolboxes for each optical table are coming!
They will probably have:
IR Viewer (a few optical tables will have IR viewers, these specific tables will be labeled in the diagram coming out later) |
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Mon Apr 1 16:16:16 2013, Albert, Update, optical tables, Optical Table Toolboxes Update
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A heavy duty plastic box is the likeliest candidate for the optical table toolbox. It measures 5 9/16 in. x 11 5/8 in. x 4 5/8 in. and fits all the tools
comfortably. ( http://www.mcmaster.com/#plastic-bin-boxes/=m4yh4m , under
Heavy Duty Plastic Bin Boxes) |
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Mon Apr 1 16:35:42 2013, Albert, Update, optical tables, Optical Table Toolboxes Update
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Quote:
A heavy duty plastic box is the likeliest candidate for the optical table toolbox. It measures 5 9/16 in. x 11 5/8 in. x 4 5/8 in. and fits |
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Tue Apr 2 21:11:42 2013, Rana, Update, optical tables, Optical Table Toolboxes Update
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Quote:
A heavy duty plastic box is the likeliest candidate for the optical table toolbox. It measures 5 9/16 in. x 11 5/8 in. x 4 5/8 in. and fits |
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Wed Apr 3 19:01:06 2013, Albert, Update, optical tables, Optical Table Toolboxes Update
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Quote:
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Wed Apr 3 23:22:20 2013, rana, Update, optical tables, Optical Table Toolboxes Update
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There are some tips for how to appy nail polish on YouTube from MKNails and MissJenFABULOUS. Their tips on how to prepare the site for a strong
bonding strength are probably helpful for our gold/nickel coated tools. For chrome tools we may need to abrade the surface with a stone or fine sandpaper
for it to take the layer better. IF the YouTube videos don't do it for you, then I suggest contacting Tom Evans at LLO to find out what kind of nail polish |
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Thu Apr 11 16:29:23 2013, Albert, Update, optical tables, Optical Table Toolboxes Update
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Quote:
There are some tips for how to appy nail polish on YouTube from MKNails and MissJenFABULOUS. Their tips on how to prepare the site |
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Mon Apr 15 17:44:28 2013, Albert, Update, optical tables, Optical Table Toolboxes Update
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I decided to go see what the electrical tape looks like on the other tools.
These are the tools I felt were necessary to label with tape: (the others don't seem to be terribly important in terms of not interchanging between
boxes) |
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Wed Apr 24 18:51:12 2013, Koji, Configuration, optical tables, PD frequency response
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The fibers should be routed beneath the electrical cables.
They should be fixed on the table for strain relieving.
The slack of the fibers should be nicely rolled and put together at the splitter side. |
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Mon Apr 29 08:17:40 2013, Albert, Update, optical tables, Optical Table Toolboxes Update
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Quote:
I decided to go see what the electrical tape looks like on the other tools. |
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Mon Apr 29 15:53:49 2013, Albert, Update, optical tables, Optical Table Boxes 7x
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Quote:
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Fri May 31 10:25:17 2013, steve, Update, safety, first aid kits refilled
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Quote:
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Tue Jun 4 10:47:57 2013, Steve, Update, safety, safety training
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| Our early bird surf student Gautem has received 40m specific basic safety training today. |
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Thu Jun 6 16:33:19 2013, steve, Update, safety, updated laser inventory
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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 |
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Tue Jun 25 10:23:20 2013, Steve, Update, safety, surf safety training
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Alex Cole and Craig Cahillane received 40m specific, basic safety training last week.
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Thu Jun 27 17:04:49 2013, Jenne, Update, safety, Nitrogen bottle too hot - overpressured
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All of us in the control room / desk area heard a sudden whoosh of air a few minutes ago. It kind of sounded like a pressure washer or something.
We determined that the northmost nitrogen bottle outside the front door was letting out all its gas.
It's a gazillion degrees outside (okay, only 91F, according to a google of "Caltech Weather"), and those bottles are in direct sun all |
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Wed Jul 31 09:51:43 2013, Steve, Update, safety, Sujan receives safety training
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| Sujan got 40m specific basic safety training this morning. |
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Mon Aug 19 09:54:13 2013, Steve, Update, safety, Masayuki receives safety training
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Masayuki Nakano, a student of Seiji's from ICRR / U Tokyo, is visiting us here at the 40m lab for the next couple months.
He received 40m specific basic safety training this morning. |
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Fri Aug 30 08:08:29 2013, steve, Update, safety, fire horns-flashers tested OK
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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. |
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Thu Oct 10 08:25:07 2013, Steve, Update, safety, Chris received safety training
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| Chris Couste, our new undergrad help received 40m specific, basic safety training yesterday. |
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Fri Feb 14 12:39:02 2014, Jenne, Update, safety, Smoke detector cleaned
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Facilities just came by and cleaned the smoke detector that is above Steve's desk. It's next to an air vent, so I guess it collects dust more than
a "typical" smoke detector. |
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Wed Feb 19 08:07:01 2014, steve, Update, safety, annual laser safety glasses check
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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. |
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Tue Feb 25 16:54:57 2014, steve, Update, safety, safety audit 2014
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We had our annual safety inspection today. Our SOPs are outdated. The full list of needed
correction will be posted tomorrow. |
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Thu Feb 27 13:11:13 2014, steve, Update, safety, safety audit correction
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Quote:
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Thu Mar 13 16:05:48 2014, steve, Update, safety, safety audit 2014
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Quote:
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Mon Mar 17 10:50:58 2014, steve, Update, safety, 2014 annual crane certification
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Quote:
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Mon Apr 28 17:27:29 2014, steve, Update, safety, safety audit 2014
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Quote:
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Tue Apr 29 00:11:03 2014, steve, Update, safety, safety audit 2014
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Be aware that this may affect POP QPD and POP RF Thorlabs PD
Quote:
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Fri May 2 08:15:54 2014, steve, Update, safety, safety audit 2014
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Late adition: CHECK all viewport covers.
A, transparent Lexan sheet is protecting glass windows in a horizontal position |
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Wed May 21 13:51:19 2014, Steve, Update, safety, scope battery recall
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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 |
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Mon Jun 9 09:41:06 2014, steve, Update, safety, safety training
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| 2014 surf students Nichin and Akhil received 40m specific basic safety training last week. |
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Thu Jun 19 10:39:22 2014, steve, Update, safety, surf safety training
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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. |
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Thu Jun 19 14:12:45 2014, steve, Update, safety, optical table scans
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PSL, AP, ETMY and ETMX optical tables were scanned for stay beam. |