ITMY tripped twice while we were switching blends, guardian brought it back fine
I have built overview MEDM screens showing the EPICS monitor of all PEM fast channels. To add these for CS, EX and EY to the sitemap I had to give PEM two related pull downs. All weather screens are in the right pull down, dust and others in the left.
Currently the BLRMS signals are missing because they have different name suffixes, I'm in the process of adding them.
- 9:00 am, Apollo to LVEA, prep for beer garden transformation.
- 9:15 am, David to LVEA, check on TCS cable short.---> done by 10:05 am.
- 9:30 am, Aaron to LVEA, cable run for photodiode amplifier.
- 9:41 am, Betsy and Travis to Y-End, SUS hardware retrieval.
- 10:14 am, Pablo to LVEA, hunt for a spare VCO.
- 11:30 am, Robert and guests to LVEA beer garden, installation of microphone.
- 1:00 pm, Kyle to Y-arm, open gate valves, not GV18.
- 1:10 pm, Karen to Y-End, cleaning.
- 1:10 pm, Corey and Cyrus to YBM, gigE camera testing.---> done by 1:35 pm.
- 2:00 pm, Apollo crew to LVEA, setup to move items around beer garden, remove stairs, support platforms, etc.
- 2:54 pm, Sheila and Justin to H1PSL laser enclosure, block ALS path for change of shutter.
- 3:15 pm, Joe and Gerardo to LVEA, remove and replace ALS path shutter.
- 3:24 pm, David and Greg to LVEA, TCS plumbing work.
- 3:49 pm, LVEA transitioning to laser safe.
2 days of RGA accumulation data for Y2 Beam Tube.
Files attached are;
Y2accum.txt - time vs ion current
04102014_y2_accumulation.txt - as written by RGA software.
Y2accumCC.txt - Cold cathode PT246
Termperature data yet to come but it has been 80F in the afternoons lately.
The volume under test includes CP4 and CP7 at either end of the two kilometers. GV 18 and GV11 were hard closed for the duration.
Preparations for opening the Corner Station to the Y-end for a few hours tomorrow Note: Indicated IP11 alarm is the result of incorrect signal conversion values to CDS -> Actual voltages and currents are nominal for pressure conditions
(Filiberto, Aaron, Thomas, Daniel)
We installed the baffle PD amplifiers for ITMY. This is a new double chassis, so we replaced the old single unit. This should also fix channel 4 for the ITMX diodes. Previously, channel 4 was connected to channel 3, but now is back on channel 4. The TwinCAT system has been reconfigured to recognize the new channels.
Activated the ETMY baffled diode amplifier in TwinCAT.
I switched from fan 1 to fan 2 at Y end Fan 2 on at 11:39 Fan 1 off at 11:40 Fan 2 set to 12K flow
ITMX has tripped twice this morning, no known cause for the first trip, the second one we caused.
ITMX and ITMY both tripped in the last few minutes. Jim is recovereing. Phil and Aaron are pulling cables, these might be a good example of times when overly sensitive watchdogs make it difficult to commision while there is normal install activity in the LVEA.
Jim, Rich, Sheila,
several more trips, BS, both ITMs.
Rich and I tried to put ITMX into a safe state:
GS13 and L4Cs in low gain mode, all blends on Start, raise T240 watchdog threshold, Sensor correction off.
After we heard that Fil and Aaron are out of the LVEA I tried switching back to the good performance state, it trippped again while I was switching blends.
Why do these trip while switching blends? According to Rich that shouldn't happen, but it does. The second attached plot below is the actuator trip that happened while I was switching blends.
Dave H, Alastair, Thomas, Greg Quick summary of progress: TCSX: Laser was operated for a few hours on Monday with an output power of ~58.5W. Optics have been mounted and placed in position on the table. This table is now ready for alignment. TCSY: Optics/mounts have been staged, and are ready for table installation. Cabling is almost complete. Attempts were made on Wednesday to operate the laser/test the output power, however this was unable to be performed due to a fault with the paddlewheel flow meter (amongst other interlock/laser controller issues that are still to be tracked down). Some additional cabling is still to be installed. TCSX/Y periscopes have been partially assembled, still to track down one last component. Socket head cap screws with lower profile heads have been ordered, as it was observed that the cap screws for the periscope base sit proud.
TCSY paddle wheel flow sensor power checked and settings confirmed. Still unable to display water flow value. Will need to remove from system and check operation on the bench and/or replace.
DavidH/Greg : Paddle wheel flow sensor removed, tested and was found to be working as expected. Reinstalled/reseated and now appears to be working correctly. As per installation instructions, for this install no teflon tape was used... previously used tape was removed.
Power watchdog trip, Gerardo is making plots to investigate.
Threshold raised
model restarts logged for Wed 09/Apr/2014
2014_04_09 07:27 h1fw1
2014_04_09 12:17 h1hpiham4
2014_04_09 12:17 h1hpiham5
2014_04_09 12:17 h1iopseih45
2014_04_09 12:17 h1isiham4
2014_04_09 12:17 h1isiham5
h1fw1 unexpected, all others due to power down of h1seih45.
No touching, please.
Yesterday, Scotty and I were able to populate the 400+ 1/4-20 hardware into the stage 2 closeout plate cover, as well as attach the back and side ribs. Today, I made a cable kit for 3IFO BSC unit 2. Unit 3 will need 4 cables tested before it is a complete kit. All bolts connecting the closeout plate and closeout plate cover were torqued to spec. Locker sub-assemblies have begun. General cleanup and shelf organization is also ongoing.
We Left ETMX running over night (it wasn't very windy so this should probably count as a quite time, I need to make a tool that will tell me that kind of thing). Sensor correction was installed in three degrees of freedom last night and running. This is ground to stage 1, using Ryan's filter which is targeting the first suspension mode at 0.45Hz. I've attached three sensor correction plots on/off, blue is sensor correction off the other colors are sensor correction on with various gains. The X direction gain ended up at 1 (which is what it was designed to be) Y and Z came out to be 0.6, which is very weird. There are also three performance plots from last night, with the GS13 and T240 curves. In general we are buried in the GS13 noise above 0.5Hz (red vs green) except at the BSC pier resonance, we do not have the HEPI L4C feed forward filters installed yet. GS13 rY and rX tilt coupling (yellow line) explains most of the low frequency gs13 signal. There is clearly some room to relax rZ loop to reduce the gain peaking below 0.2Hz and again none of this is Stephen's fault I can't figure out how to change the login to me Rich Mabey I hope that I now have the correct plots
I added the projected motion at the suspension point (Longitudinal), where we aren't noise limited we are completely dominated by table X motion, which of course at low frequency is completely dominated by rotation motion (rY).
Yaw motion only couples to table rZ so I didn't plot that
added ETMX and ITMX optical lever signals
GV7 was soft closed for ALS shutter work.