This morning I found that there was no light on the SPOB PD. I went looking at the photodetector and I found that the shutter in front of it was closed.
I switched the shutter driver from n.c. to n.o. which had the effect of opening it.
I guess we inadvertently closed the shutter with Rana when last week we were tinkering with the ITMY camera.
Rana noticed that recently the temperature inside the lab has been a little bit too high. That might be causing some 'unease' to the computers with the result of making them crash more often.
For the next hours I'll be paying attention to the temperature inside the lab to make sure that it doesn't go out of control and that the environment gets too cold.
Today the lab is perceptibly cooler.
The temperature around the corner is 73 F.
It has rained continuously for the last 24 hours. Bob walked through the lab looking for possible water infiltrations. The floor looked dry: no puddles or leaks anywhere so far.
This morning the pencil soldering iron of our Weller WD2000M Soldering Station suddenly stopped working and got cold after I turned the station on. The unit's display is showing a message that says "TIP". i checked out the manual, but it doesn't say anything about that. I don't know what it means. Perhaps burned tip?
Before asking Steve to buy a new one, I emailed Weller about the problem.
There should be a supply of extra tips in the Blue Spinny Cabiney (I can never remember it's French name....) The drawer is something like the top row of one of the bottom sets of drawers. You can pick the shape of tip you want, and stick it in.
Albeto and Koji
We took the tip replacement from the blue tower.
I am looking at http://www.cooperhandtools.com/brands/weller/ for ordering the tips.
The burnt one seems to be "0054460699: RT6 Round Sloped Tip Cartridge for WMRP Pencil" We will buy one.
The replaced one is "0054460299: RT2 Fine Point Cartridge for WMRP Pencil" We will buy two.
I like to try this: "0054460999: RT9 Chisel Tip Cartridge for WMRP Pencil" We will buy one.
I can't find the DELL laptop anywhere in the lab. Does anyone know where it is?
Also one of the two netbooks is missing.
One dell is in the clean room for the suspension work.
Koji and I wanted to turn off the IFO-room AC so the wind would not blow on MC1-3. We could not. The switches were probably bypassed when the power transformer was replaced at the last scheduled power outage.
There is one three position manual/off/auto switch next to the filter for each unit at CES. They have to be in AUTO position when we want to turn AC on/off from the lab.
Today we met and we finally come up with a lot of cool, clever, brilliant, outstanding ideas to organize the lab.
You can find them on the Wiki page created for the occasion.
Where are we going to put the tiki bar? The ice cream machine? I am disappointed in the details that appear to have been glossed over..
... not just because we haven't locked the interferometer for quite some time. I mean, it literally stinks. The chiller's chiller is molding. Its' dripping water and there's mold all under it (Jo just confirmed: "yeah, it's mold").
Someone from Caltech maintenance just crossed the door. Hopefully he'll help us fix it.
I'll keep you updated. Stay tuned.
To get a feel for the Capacitive Bridge problems, we setup a simple bridge using fixed (1 nF) caps on a breadboard. We used an SR830 Lock-In amplifier to drive it and readout the noise.
The measurement setup for the Capacitor Bridge Test is still sitting on one of the work benches.
Unless the experiment is supposed to continue today, the equipment shouldn't have been left on the bench. It should have been taken back to the lab.
Also the cart with HP network analyzer used for the test was left in the desk area. That shouldn't have left floating around in the desk area anyway.
The people responsible for that, are kindly invited to clean up after themselves.
The 40m corner station crane is out of order, and it's stuck in a way that prohibits entry to the 40m LVEA / IFO room for safety. The crane has been locked out / tagged out.
Until further notice, absolutely no one may enter the 40m LVEA. Work is permitted in the desk / control room areas.
Signs have been posted on all doors into the LVEA. Please consider those doors locked out / tagged out.
After the crane training, Bob attached speakers to the ceiling right next to the projector, for use with presentations.
I have taken the charger for the dark gray dell laptop from its station, and have labelled the information there too.
Will keep it back tonight.
I think op540m has finally bitten the dust. I noticed that both of its screens were black, so I assumed that it had crashed due to known graphics card issues or something. But upon closer inspection, it is way more dead than that. I checked that it does have power (at least the power cable is securely plugged in at both ends, and the power strip its on is successfully powering several other computers), but I can't make any lights or anything come on by pressing the power button on the front of the computer tower.
Immediate consequences of op540 not being operational are the lack of DMT, and the lack of Alarms.
Joe is doing an autopsy right now to see if its really dead, or only 'mostly dead'.
EDIT: Joe says maybe it's the power supply for the computer. But he can't turn it on either.
I changed the setpoint for the HVAC control (next to Steve) from 73F to 72F. This is to handle the temperature increase in the control room with the AC unit there turned off.
We know that the control setpoint is not linear, but I hope that it settles down after several hours. Lets wait until Tuesday evening before making another change.
Both Rolf and Alex (at least his elbow) together visited the 40m to talk with Joe for the CDS.
40m is the true front line of the CDS development!!!
[Kiwamu, Yuta, Koji]
We went to the new metrology lab at Downs subbasement (Rm014) in order to measure the phase map of the delivered PRMs.
It's brand-new. So we had to measure the reference phase map, calibration as well as the phase map of our mirrors (3 PRMs and 1 spare SRM). It took a whole day...
I had a number of delinquent items on the sign out list from the 40m. I returned about half, and ordered replacements for most of the other half.
I put the photodiodes on the SP table, and the 560 on the electronics bench.
The projector in the controls room has been fixed the orange blinking of the status LED.
What we needed was to push "Volume -" and "Menu" for 5 sec.
This resets the timer of the lamp. When the timer reaches 2500 hours, it automatically start sabotaging.
We've got the spare lamp. It is in the top drawer of the computer cabinet on which the label makers are.
I propose to use C1:ALS-xxx_xxx for the names of the green related channels, instead of GCV, GCX, GCY, GFD...
Like C1:SUS or C1:LSC, we name the channels by the subsystems first, then probably we can specify the place.
We can keep the names of the processes as they are now.
Jenne found the X-end table enclosure had been left open. She replaced the lid on it.
The 40m lab was visited by ~ 30 LSC members the end of last week.
Sonali, Ishwita, and another anonymous SURF saved the long-lasted water shortage of the 40m
I found the PSL table left open, and unattended again.
As far as I know, Jamie and Jenne (working on the LSC rack, so no lasers / optics work involved) have been the only ones in the IFO room for several hours now.
I'm going to start taking laser keys, or finding other suitable punishments. Like a day of lab cleanup chores or something. Seriously, don't leave the PSL table open if you're not actively working on it.
The hazardous waste people are moving chemicals around outside our door, and have roped off our regular front door.
Please go around, and use the control room door to enter and exit. It is currently unlocked, although I'll lock up when I leave for LIGOX.
Josh Smith, Fabian Magana-Sandoval, Jackie Lee (Fullerton)
Thanks to Jamie and Jenne for the tour and the input on the pages.
We had a look at the GEO summary pages and thought about how best to make a 40m summary page that would eventually become and aligo summary page. Here's a rough plan:
- First we'll check that we can access the 40m NDS2 server to get data from the 40m lab in Fullerton.
- We'll make a first draft of a 40m summary page in python, using pynds, and base the layout on the current geo summary pages.
- When this takes shape we'll iterate with Jamie, Jenne, Rana to get more ideas for measurements, layout.
Other suggestions: Jenne is working on an automated noisebudget and suggests having a placeholder for it on the page. We can also incorporate some of the features of Aidan's 40m overview medm screen that's in progress, possibly with different plots corresponding to different parts of the drawing, etc. Jenne also will email us the link of once per hour medm screenshots.
I have updated the 'videoswitch' program that controls the video MUX. It now includes the ability to query the video mux for the channel mapping:
controls@pianosa:~ 0$ /opt/rtcds/caltech/c1/scripts/general/videoswitch -h
videoswitch [options] [OUT] List current output/input mapping [for OUT]
videoswitch [options] OUT IN Set output OUT to be input IN
-h, --help show this help message and exit
-i, --inputs List input channels and exit
-o, --outputs List output channels and exit
-l, --list List all input and output channels and exit
-H HOST, --host=HOST IP address/Host name
This is the fone storree
we should turn off 3977,3979 and 2351 has no function
Edit, JD: x8925 is at the Visitor desk, and isn't on the map.
I installed a NETGEAR Wireless Router (WPN824N) today on the 131 network. The admin password for it as well as the wireless access password are in the usual places.
The SSID is 40EARTH. I have set it to allow WPA as well as WPA2 access, so the speed is only 54 Mbps for now. In a year or so, we can turn off the WPA support and up the speed.
This router was confiscated by the GC guys this morning around ~10am. They barged in and said that someone at the 40m had connected a new router, and we had magically taken down half of the GC network. The cable was plugged in to the wrong port on the back of the router.
Junaid / Christian said that they would "secure" the router, and then reinstall it. Apparently just having a password didn't satisfy them. This was the compromise, versus them just taking the router and never bringing it back.
I retrieved the newly "secured" router from Junaid. It had apparently been hooked up to the GC network via it's LAN port, but it's LAN services had no been shut off. It was therefore offering a competing DHCP server, which will totally hose a network. A definite NONO.
The new SSID is "40mWiFi", it's WPA2, and the password is pasted to the bottom of the unit (the unit is back in it's original spot on the office computer rack.
I have worked out the fibers we need to get for the following distribution scheme:
1) We have a laser placed at the 1Y1 rack. A part of the power is split off for monitoring the laser output and sent to a broadband PD also placed in the same rack. The RF excitation applied to the laser is split and sent to LSC rack (1Y2) and used to calibrate the full PD+Demod board system for each RFPD.
2) A single fiber goes from the laser to a 11+ way switch located in the OMC electronics cabinet next to the AP table. From here the fibers branch out to three different tables.
Cable for the laser source to the OMC table:
We also require a cable going from PSL table to the ETMY table: This is not a part of the RFPD characterisation. It is a part of the PSL to Y-end Aux laser lock which is a part of the green locking scheme. But it is fiber we need and might as well order it now along with the rest.
If you would like to add anything to this layout / scheme, please comment. On Monday Eric is going to take a look at this and place orders for the fibers.
(I have included the lengths required for routing the fibers and added another 20% to that )
Mike Pedraza came by today to install a new wireless network router configured for the 40m lab network. It has a 'secret' SSID i.e. not meant for public use outside the lab. You can look up the password and network name on the rack. Pictures below show the location of the labels.
Mike P swapped in a new network router Linksys E1000
Yuta is going to bring this up at the 40m meeting so it can be argued over, but we (I) want a permanent IR beat setup at the PSL table. This isn't a novel idea or anything, I just think it will save us time if we can quickly re-acquire the beat signal, so I'm bringing it up again. Eventually, as Koji suggested to me, we can make the IR beat part of a servo, so that the green beat is always within the bandwidth of the green beat PD. But for Phase 1, it's enough to just see the Ir beat on a ~1GHz PD. Suresh tells me most of the bits and pieces are around, we just have to gather them all in one place.
[Yaakov, Eric, Jenne, Yuta]
Two of our surfs, Yaakov and Eric, pulled two unused RG-405/SMA cables that had been running from 1X2 to (mysteriously) 1Y2 racks. They left the 1X2 end where it was and pulled the 1Y2 end and rerouted it to the control room. We labeled both ends appropriately.
The end at 1X2 is now plugged into a splitter that is combining the RF input monitor outputs for the X and Y beatbox channels, so that we can watch the beat signals with the HP8591 in the control room.
I'm seeing LOTS OF STUFF NOT CHECKED INTO THE SVN!!! both modified things that haven't been updated, and things that looked like they haven't been checked in at all.
Look through EVERYTHING that you think you might have touched, or even care about, and make sure it's checked in.
We really need something better to replace the access connector when we're at air. This tin foil tunnel crap is dumb. We can't do any locking in the evening after we've put on the light doors. We need something that we can put in place of the access connector that allows us access to the OMC and IOO tables, while still allowing IMC locking, and can be left in place at night.
It is in the shop. It will be ready for the next vent. Koji's dream comes through.
Can we see the full design? If we can't lock the mode cleaner with this thing on then it's really of no use. We want it to be equivalent to the light doors, but allow us to keep the mode cleaner locked. That's the most important aspect.
It also needs to be wide enough that the MMT beam can go through, so that we can not only lock the MC, but also work on the rest of the IFO.
24" diameter clear acetate access connector is in place. The 0.01" thick plastic is wrapped around twice to insure air and bug tight barrier for the MC to lock overnight. The acetate transmission for 1064 nm is 90 % This was measured at 150 mW 2.5 mm beam size.
The SP table was found open this morning. Please, do not make optics dirty!
I cleaned up the tops of the SP table.
Stop storing your junk, boxes, laptops, etc. on the optical tables. This includes the big SP table. Please move all of that junk into racks or shelves, etc.