40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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ID Date Author Type Categoryup Subject
  2422   Fri Sep 20 17:31:25 2019 DuoDailyProgressGeneralGeneral update

Basically two things are happening in the lab now.

1) We are assembling a shop list for the lab, buying a couple things to put the stuff together. After the purchase, relevant items will be uploaded under this post.

2) I made the TIA with OP27, trying to measure it noise. But the lab has too much environment noise. I will try measuring it after hours or in the EE shop and see if that gives a better results. Progress on that front will reply to this post later too.

  2436   Tue Oct 22 15:55:52 2019 KojiElectronicsGeneralBorrowed ITC510 from Cryo

From Cryo Cav setup

Borrowed ITC510 Laser Driver/TEC controller combo -> QIL

  2445   Fri Nov 15 17:29:14 2019 RaymondLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

See attached photos for the internal layout of Zach's cantilever cryostat (all internal components left in cryo lab (except the heater)) The holes are on a 1cm grid and, I believe, are threaded for 4-40 (will check Monday). The internal 'window' is about an inch off the colplate. There is ~2 inches of space from the colplate to the first radiation shield lid. 

The external optical port on the vacuum tank is 1.75" from the bench and is 0.75" in diameter. The cryostat is missing the lid o-ring, electrical feedthrough vacuum port, and intermediary valve between the vacuum space and the vacuum pumps. I will search for these on Monday.

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  2448   Tue Nov 19 20:16:40 2019 RaymondLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

The cold plate breadboard holes are indeed 4-40.

I've installed a new o-ring and vacuum valve, but I've scoured the labs for any piece that fits the open port on the side of the cryostat and have come up empty-handed. I've attached a photo with all of the IR labs input pieces found thus far (except duplicates or ones that match these same dimensions), none fit the drill pattern or counter sunk hole of the cryostat port. I tried but could not find mention of this specific port's removal in the elog history. 

Spent a while trying to make a Franken-stat from the innards and limbs of the other decommisioned IR lab cryostats but nothing allowed for a correct optical path. So I then started to make a custom port with a 122 o-ring and an old ISO blank flange, but I need a drill bit larger than 0.5" for the center electrical feedthrough and am having ID card issues accessing the student shop over in CES.

I will call IR labs tomorrow and see if they have an a standard piece for this feedthrough. 

Attachment 1: IMG_0483.JPG
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  2450   Wed Nov 20 11:59:17 2019 KojiLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

Ah, I have designed the PD holder with the venting targeted for 1/4-20 holes with 1" grid...

The dog clamps to hold the PD units also need to be compatible with 4-40 screws.

How big the hole diameter should be? Can you find a suitable drill at the 40m?

 

  2451   Wed Nov 20 12:25:58 2019 KojiLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

The large cryostat has 1/4-20 holes on a 2 inch grid

The IR labs cryostat has 4-40 holes on a 1 cm grid

I'll check the 40m for a bit (5/8-3/4")

  2452   Wed Nov 20 17:44:10 2019 KojiLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

Here you are.

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  2454   Thu Nov 21 21:45:10 2019 RaymondLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

Ordered the electrical feedthrough from IR Labs on overnight shipping. I've attached the diagram of the feedthrough, 32 pin is the only available configuration for this size feedthrough. 

Will attempt to use my makeshift 12 pin feedthrough if the proper one does not arrive tomorrow (thanks Koji for the 40m drill bit tip). I'll clear the bench of the IR Labs carcasses tomorrow.

UPDATE: feedthrough will arrive by 10:30 on Monday the 25th

Attachment 1: DT02H_18_32PN.pdf
DT02H_18_32PN.pdf
  2456   Fri Nov 22 13:21:26 2019 RaymondLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

Removed the IR Labs cryostat window for testing. It's on the cryocooler bench, see attached photos

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  2457   Fri Nov 22 15:33:40 2019 KojiLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

Salvaged an assort of vented/non-vented screws, washers, spring washers, and clamps for #4-40 & 1/4-20 from the 40m cleanroom stock. They are clean enough for the cryostat use.

Attachment 1: P_20191122_150845_vHDR_On.jpg
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  2461   Tue Nov 26 15:36:59 2019 RaymondLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

The IR Labs cryostat is now pumping down. The thor labs posts are necessary for centering the optical port at a height of 5.5". The orange cabinet used to elevate the pumping station was relocated from next to the computer (was, and still is, empty). The power supply is for the wide range vacuum gauge attached to the pumping line. 

I've ordered a liquid nitrogen dewar for arrival Monday morning.

For future reference, the gauge communicates via a VGA port, for which the pin-to-wire association is as such: 1-Black; 2-Brown; 3-Red; 4-Orange; 5-Yellow; 6-Green; 7-Blue; 8-Purple; 9-Grey; 10-White; 11-Pink; 12-Cyan; 13-Black/White; 14-Brown/White; 15-Red/White  (MKS 901P non-ethercat wiring diagram)

Attachment 1: IRLabsQIL.pdf
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  2467   Wed Dec 4 13:54:04 2019 RaymondLab InfrastructureGeneralMoved IR Labs cryostat into QIL from Cryo Lab

Update on the 32 pin female connector:

Mouser's overnight delivery was rejected on 12/3 by mail services for being soaked in an "unkown liquid" and was therefore taken away by the courier for return to Mouser. This was the last one in stock, so I ordered a replacement through Digikey for express delivery this morning 12/4, but it has not yet arrived. I've called Fedex and the package was sorted at the LA facility but not given to the courier for morning delivery. It is now estimated for delivery this afternoon. 

  2491   Mon Apr 6 18:35:48 2020 KojiSummaryGeneralWest Bridge flooding Apr 6th

West Bridge flooding Apr 6th due to rain in the night

Looks like the first responder was Calum. The attached photos were sent from him.

 

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  2492   Mon Apr 6 18:38:50 2020 KojiUpdateGeneralWest Bridge flooding Apr 6th

To check the status of all the labs, I went to WB. There was no ongoing water leakage in the labs.

Attachment 1: The subbasement was completely dry.

Attachment 2: Upon the lab inspection, I took PPE from the OMC lab. This was intended to prevent me to pick up anyone's anything and you to pick up my anything.

Attachment 3: The EE shop has no problem

Attachment 4: Cryo Lab. No problem.

Attachment 5: Crackle Lab. No problem, but a lot of dead cockroaches on the floor!

Attachment 6: OMC Lab. No problem.

Attachment 7: C.Ri.Me Lab. Gabriele has already checked the status in the morning. And I found no problem. Didn't bother to turn on the light.

Attachment 8: CTN Lab. No problem.

Attachment 9: QIL Lab. The floor was mostly dry. Did someone wipe the floor?

Attachment 10: Some water drip was found in front of the workbench.

Attachment 11: It comes from the ceiling.

Attachment 12: Left a trash box to catch future possible leak.

Attachment 13/14: TCS Lab. No problem found.

Attachment 15: As per Aidan's request, the instruments were moved to the North-East area of the room to avoid future possible leak.

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  2493   Mon Apr 6 19:01:21 2020 KojiUpdateGeneralWest Bridge flooding Apr 6th

Additional notes:

I did not see anyone in the building.

Attachment 1/2: Our labs have no sticker/paper to indicate any disinfection of the room. (Make sense)

Attachment 3: Most of the basement offices have the notes to indicate disinfection.

Attachment 4/5: Our offices have no notes.

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  2499   Fri Jul 24 04:54:57 2020 RaymondLab InfrastructureGeneralMDF repair

First day back (7/15) found the particle board trim w/ powerstrip on the QIL workbench had collapsed. Re-glued and added 4 screws to the middle board where vertical boards from the shelves extended low enough. See attached photos for before, during, and after looks. 

Attachment 1: MDFrepair_before.jpg
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Attachment 2: MDFrepair_during.jpg
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Attachment 3: MDFrepair_after.jpg
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  2507   Wed Sep 23 00:26:59 2020 aaronMiscGenerallab entry

I entered QIL just before Wed Sep 23 00:27:51 2020 to check out and photograph the sprinklers, spent about 20 min looking around the lab and drawing inspiration for in cryo. Wore shoe covers and gloves, touched nothing, sanitized doors after.

  2521   Fri Nov 20 18:47:42 2020 KojiSummaryGeneralPermenant exchange of TED200C(QIL) and TED200C(2umECDL)

I moved the brand new TED200C on the workbench to Crackle for 2um ECDL (permanently)
The TED200C temp controller used in the 2um PD test setup will stay there (permanently)

http://nodus.ligo.caltech.edu:8080/SUS_Lab/1851

  2522   Fri Nov 20 18:49:43 2020 KojiSummaryGeneralInstrument loan

FEMTO DLPCA200 low noise preamp (brand new)

Keithley Source Meter 2450 (brand new) => Returned 11/23/2020

were brought to the OMC lab for temporary use.

  2525   Tue Dec 22 10:42:17 2020 ranaSummaryGeneralInstrument loan

I was thinking about getting this new current pre-amp from NF:

http://www.nfcorp.co.jp/english/pro/mi/loc/pre/ca5351/index.html

It seems to have a good noise performance and has a built in low pass filter and also a remote interface.

The FEMTO seems less fancy, but their noise performance is actually 2-3x better.

Quote:

FEMTO DLPCA200 low noise preamp (brand new)

Keithley Source Meter 2450 (brand new) => Returned 11/23/2020

were brought to the OMC lab for temporary use.

 

  2526   Tue Dec 22 15:20:14 2020 KojiSummaryGeneralInstrument loan

Is the reverse bias programmable? FEMTO has a bias trimmer on it. It's useful in the usual application, but for automation, the configuration of the input becomes cumbersome.

  2527   Tue Dec 29 17:53:21 2020 ranaSummaryGeneralInstrument loan

doesn't seem so, but they sell this one:

http://www.nfcorp.co.jp/english/pro/mi/loc/m_lp/p_lp/lp_6016_01/index.html

which has a USB interface and pretty good voltage noise spectrum

 

  2528   Fri Jan 15 10:55:23 2021 PacoLab InfrastructureGeneralBorrow AG4395A

This morning I rolled the AG4395A from Adaptive Optics lab (labeled QIL, IP = 10.0.1.64) for use in Crackle. Will return after end using.

  2542   Fri Mar 19 13:51:16 2021 AidanComputingGeneralActivated MATLAB on QIL-WS2

MATLAB license had expired on QIL-WS2 so I had to activate it again.

  2543   Fri Mar 19 15:13:25 2021 AidanComputingGeneralAdding fb4:/usr/share/advligorts to QIL-WS2

Adding fb4:/usr/share/advligorts to QIL-WS2 to /etc/fstab file

Should help access to CDS_PARTS model file in Simulink on QIL-WS2

Except access is denied by FB4

  2572   Thu May 20 16:57:32 2021 KojiElectronicsGeneralKeithley Source Meter returned to Downs

I've returned the Keithley Source Meter unit
- The unit (Keithley 2450?2460?)
- A power cable
- A pair of banana clips
- the transistor test fixture & triax cable/connectors
 

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  2589   Wed Jun 16 17:17:12 2021 KojiUpdateGeneralI2 cell

I was searching an I2 (Iodine) cells back to the days of the laser gyro.

I found a likely box at a very tricky location. Took the photos and returned to this tricky place.
 

2021/Jul The box was moved to the OMC lab (KA)

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  2593   Wed Jun 23 16:25:49 2021 Ian MacMillanDailyProgressGeneralNetwork Issue

I accidentally powered down and restarted the TP-link safe stream router and now nothing will connect to it. Not even things that are plugged into it. I can't even connect to the router's setup screen. I have no idea how to solve this issue short of resetting the router. I don't know how it was configured before so I will not reset it because I don't know how it was configured.

  2595   Tue Jun 29 15:45:43 2021 Ian MacMillanDailyProgressGeneralNetwork Issue

I was able to connect to the router (the one on top of the switch in the rack next to the orange tool drawers) and reconfigure it using the same internal IP as found labeled and mentioned in [2201]. The router now has a different external IP that I wrote on the router (twice). The network/router and switch is now working in the lab.

Update: It turns out that the router reset itself somehow. so any settings/ port forwarding that was set up before has probably been wiped out and would need to be set up again.

SSHing into the QIL needs to be set up again. 

  2613   Wed Jul 21 14:53:28 2021 KojiSummaryGeneralJul 17, 2021: Canon camera / small silver tripod / macro zoom lens / LED ring light borrowed -> QIL

See https://nodus.ligo.caltech.edu:8081/40m/16250

  2616   Fri Jul 23 20:53:40 2021 KojiSummaryGeneralJul 17, 2021: Canon camera / small silver tripod / macro zoom lens / LED ring light returned / ELectronics borrowed

[Returned] Brought one HAM-A coil driver (D1100687 / S2100619) and one Satellite Amplifier (D1002818 / S2100741) from the 40m

Also brought some power cables.

Brought ~1m of 0.0017" (~43um) misical wire. This will make the tension stress be 341MPa. The safety factor will be ~7.

 

Attachment 1: P_20210723_212158.jpg
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  1   Sun Oct 21 23:06:49 2007 ranaLab InfrastructureHVACIts too cold again
Friday evening it was a pleasant 70 deg F in the lab.

Tonight (Sunday evening) its back down to 61 deg F.

This happened ~a week ago; emailed Jeanne and Jo Ann and it got fixed. Will
try again and post results here.
  12   Wed Dec 12 16:10:19 2007 tobinLab InfrastructureHVACLab Temperature
The lab temperature at 2pm was a comfortable 69 degrees.
  13   Wed Dec 12 16:19:00 2007 tobinLab InfrastructureHVACLab Temperature
I connected the particle counter to the Dell computer for PEM data logging (temperature, humidity, and particle count). The data shows that while the temperature is comfortable right now, it was quite warm in here yesterday (78 degrees). A plot is attached.

For this I made a serial cable using two DB9-to-RJ45 converters and a length of Cat5 ethernet cable. The computer end of the cable has a female connector; the particle counter end of the cable has a male connector. Only three conductors are connected: transmit (pin 2), receive (pin 3), and ground (pin 7 on the particle connector, pin 5 on the computer). I used the USB-to-serial dongle, which shows up in Linux as /dev/ttyUSB0.

Someone later can write a script to automatically poll the particle counter for new data. For now, I just emptied its internal buffer, which stores the last 200 measurements. The secret to communicating with the particle counter, which I learned by examining the c1psl statecode at the 40m, is to first transmit the letter "U". After this, the particle counter will listen to you and do what you say. In particular, sending a capital letter "A" will cause the counter to emit the next measurement from its buffer, until there are none left, at which time it will just respond with "#". To read the data I just ran a "cat /dev/ttyUSB0" command in one terminal, while in another terminal I ran a loop "while 1; echo -n A > /dev/ttyUSB0; sleep 1; end". I set the serial port parameters (9600BPS, 8N1) using Minicom.

Also, there's a Matlab script to parse and plot the output, in ~controls/tobin.
Attachment 1: temperature.pdf
temperature.pdf
  14   Thu Dec 13 18:47:02 2007 tobinLab InfrastructureHVACLab Temperature
Extech: 66.8F, 25%RH. Met One: 68F, 20%RH.

Here is the datalogger's contents:
A  121307 161942 0100 0.3 000000 0.5 000000 TMP 000680 R/H 000130 LOC 000000 C/S 000E54
A  121307 164641 0100 0.3 000000 0.5 000000 TMP 000680 R/H 000130 LOC 000000 C/S 000E53
A  121307 171340 0100 0.3 000000 0.5 000000 TMP 000685 R/H 000130 LOC 000000 C/S 000E52
A  121307 174039 0100 0.3 000000 0.5 000000 TMP 000680 R/H 000200 LOC 000000 C/S 000E53
A  121307 180738 0100 0.3 000000 0.5 000000 TMP 000680 R/H 000210 LOC 000000 C/S 000E57
A  121307 183437 0100 0.3 000000 0.5 000000 TMP 000680 R/H 000210 LOC 000000 C/S 000E56
A  121307 190136 0100 0.3 000000 0.5 000000 TMP 000680 R/H 000195 LOC 000000 C/S 000E5C
A  121307 192835 0100 0.3 000000 0.5 000000 TMP 000685 R/H 000195 LOC 000000 C/S 000E69
I'm not sure why it only starts at 12:13pm today. Also, looks like its clock is 50 minutes fast.
  15   Tue Dec 18 13:49:50 2007 tobinLab InfrastructureHVACLab Temperature
Extech: 68.6F, 57%RH. Met One: 68F, 53%RH. Drizzling outside.

Particle counter log shows stable temperature 67.5-69.5F over the last four days.
Attachment 1: temperature-20071218.pdf
temperature-20071218.pdf
  16   Fri Dec 21 21:27:12 2007 tobinLab InfrastructureHVACLab Temperature
Extech: 67.9F, 26%RH. Met One: 68F, 20%RH. Clear & cold outside.

Particle counter log looks stable.
  18   Wed Jan 2 15:10:24 2008 tobinLab InfrastructureHVACLab Temperature
The lab temperature appears to have been stable over the holiday, always between 68.5 and 70.0 degrees F. (There is no data from Dec 28-29 due to a computer reboot.)
  90   Tue Sep 9 15:49:22 2008 DmassLab InfrastructureHVACHEPA Filters
I had turned off the east HEPA filter with Masha for a noise measurement, and I forgot to turn it back on until today. Also, it looks like someone had unplugged the west HEPA filter and not plugged it back in. The latter I noticed while changing the power cabling, so it's possible that the west HEPA was running the whole time and I only noticed that I had just unplugged it...but I think this was a long term situation.

Also, the particle counter was reclaimed by the 40m during the vent after the earthquake, so we haven't had one on the table for some time. I had not been running the laser that much during the time when both filters may have been off, but it is worth noting in case there is unexplained dirtiness noticed in the future.
  224   Tue Aug 4 15:46:46 2009 DmassLab InfrastructureHVACTemperature update

It has been a brisk 72 degrees for a while (~1 week?) in lab. This is apparently the proper temperature for keeping graduate students awake, and lasers cool.

  296   Mon Aug 31 10:17:15 2009 DmassLab InfrastructureHVACSmokey Flavor in Lab

The lab, like all of Pasadena right now, has a smokey flavor to it. It seems significantly stronger in the lab than in the hallway.

  753   Fri May 7 07:42:09 2010 AidanLab InfrastructureHVACRe-sealing and laser keys

The guys are back this morning to reseal the vents. There are some green marks around the place but also what looks like new red ones over the top of the silicon they laid down two weeks ago.

I shutdown the 35W laser using the 'System Off' option on the touch-screen and then turned off the NPRO and removed the key. That key is now in the second drawer down in the first desk. The key for the Gyro NPRO was not in the laser.

  754   Fri May 7 10:16:24 2010 ZachLab InfrastructureHVACRe-sealing and laser keys

Gyro key is in the top drawer of the center workstation.

Quote:

The guys are back this morning to reseal the vents. There are some green marks around the place but also what looks like new red ones over the top of the silicon they laid down two weeks ago.

I shutdown the 35W laser using the 'System Off' option on the touch-screen and then turned off the NPRO and removed the key. That key is now in the second drawer down in the first desk. The key for the Gyro NPRO was not in the laser.

 

  755   Fri May 7 11:10:17 2010 AlastairLab InfrastructureHVACRe-sealing and laser keys

Sealing is done.  They left the air on this time while doing it so they could get as many small leaks as possible.  Anyway, that means that the air is still on in the lab and they have finished for good now.

Quote:

Gyro key is in the top drawer of the center workstation.

Quote:

The guys are back this morning to reseal the vents. There are some green marks around the place but also what looks like new red ones over the top of the silicon they laid down two weeks ago.

I shutdown the 35W laser using the 'System Off' option on the touch-screen and then turned off the NPRO and removed the key. That key is now in the second drawer down in the first desk. The key for the Gyro NPRO was not in the laser.

 

 

  766   Tue May 11 16:53:08 2010 Alastair, RanaLab InfrastructureHVACParticle count and temperature

I deleted Alastair's 8000 line elog spam and have attached it here as a zip file. Its called 'DataForAir.gz', but I'm not really sure what this data is from (i.e. what kind of sensor, what location, etc.)

Attachment 1: May_11.jpg
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Attachment 2: May_11_temp.jpg
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Attachment 3: DataForAir_100512_141411.csv.gz
  767   Tue May 11 20:12:54 2010 ZachLab InfrastructureHVACParticle count and temperature

I believe this is data from the particle counter that has been on the gyro table. Alastair offered to upload it to the elog for me since I had several things to do this afternoon, and Frank needed to use ASUS(?) for a while.

Quote:

I deleted Alastair's 8000 line elog spam and have attached it here as a zip file. Its called 'DataForAir.gz', but I'm not really sure what this data is from (i.e. what kind of sensor, what location, etc.)

 

  768   Tue May 11 21:03:57 2010 AlastairLab InfrastructureHVACParticle count and temperature

I guess that since it is some sort of CSV file it displays it as text.  Indeed it is the particle counter in the ATF lab. 

Quote:

I believe this is data from the particle counter that has been on the gyro table. Alastair offered to upload it to the elog for me since I had several things to do this afternoon, and Frank needed to use ASUS(?) for a while.

Quote:

I deleted Alastair's 8000 line elog spam and have attached it here as a zip file. Its called 'DataForAir.gz', but I'm not really sure what this data is from (i.e. what kind of sensor, what location, etc.)

 

 

  769   Wed May 12 03:48:07 2010 ranaLab InfrastructureHVACstatus

 Phillip  and Tim from Caltech physical plant talked with us today down in the lab about what to do about the HVAC.

They're going to swap out the pre-filters in the air handling room, install another flow meter to check the lab air pressure, and install another temperature sensor in the lab (underneath the south cabinets).

We should record in the ELOG some of the temperature transients we're having now that we think are associated with opening the lab doors. Then we can do a quantitative before and after test to see how things change afterwards.

We probably should also put a temperature sensor out in the hallway to see what's going on out there.

  785   Mon May 24 11:02:14 2010 ZachLab InfrastructureHVACDuct sealing photo summary

The following is a more-or-less exhaustive photo summary of the sealing work that was recently done in the ATF. The insets indicate the locations of the ducts within the lab.

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  817   Thu Jun 17 11:05:42 2010 FrankLab InfrastructureHVACHVAC now working again

a minute ago a guy showed up in the lab and wanted to talk to Aidan but couldn't find him. He told me that the air conditioning is now working again and i should let him know.

Particle count in the ATF was about 1.5million before, now decreasing and already below 100k. Can't post data as the usb-to-serial converter is still used at 40m...

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