Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 8 PM Nov. 12 to 8 PM Nov. 13. Also attached are plots of the modes to show when they were running/acquiring data.
Apollo, Jax, Thomas We completed the mechanical installation of the H1 ITMY Optical Lever, all of the components fit together as designed and the QPD currently reads back a signal into EPICS via these channels: H1:SUS-QUADTST_L3_OPLEV_PIT_OUTMON H1:SUS-QUADTST_L3_OPLEV_YAW_OUTMON (with H2 ITMY calibration parameters but these are no longer valid, will re-run test for new parameters once the cartridge is installed, the optic damped, and the chamber pumped down) These channels run into the test stand electronics in the LVEA at the moment but will soon be plugged into the permanent H1 OptLev channel in the H1 electronics bay, cables to be ran. Next we have to align, measure the waist and calibrate the signal.
[Joe G., Luke W., Cheryl V., Chris M.] Today we realigned the paths on the PSL table according to D0902114 with a few minor exceptions. The first exception is that the ALS beam path was moved two inches closer to the reference cavity to give some more room between the EOM and ALS Faraday. The second exception is that the optics which were moved to accommodate a possible periscope shift (alog 4662) were left in place even though the periscope was not shifted significantly. In addition the periscope was removed in order to fix the damping goo problem and put back in place. As of now the PSL is ready to inject a beam into the HAM 2 chamber for IMC flashing and alignment, which we expect to do tomorrow evening.
Purge air depressurized for ~15 minutes around 1615 hrs. local
BSC1 (Cartridge)
PSL/IO:
Septum viewport install HAM1/2
Viewports installed on top of HAM2 (center & north)
BSC2 Cartridge
Optical Lever (need for Robert's test)
DAQ Work
EX--clean & dome ready to be removed (maybe this afternoon)
Bubba said, "Clean stainless is being loaded into bin"
The LVEA is now in LASER HAZARD from about 10am - 1pm.
EY Dust Alarm (gerardo, worden, jodi)---note: Access System is not communicating to EY & EX
EY Chiller Yard alarm (due to Robert measurements)
Maintenance:
Pallets picked up near Staging (two loads)
Fire Dept on site.
A staging cleanroom was moved from the HAM1/2 area to BSC1/HAM3 area and then the central curtain partition was installed to create a garbing/staging cleanroom. Cris cleaned once the cleanroom was in place. Folks working in BSC1 (Lower Level) and in HAM3 should be able to garb and stage from this cleanroom.
Mark B. Commencing DTT TFs on ITMy. Will get as far as possible this afternoon and then continue this evening. Priority is M0 and R0 undamped, then M0 and R0 damped.
Mark B. Took M0 and R0 undamped TFs. All data is in the SVN as 2012-11-13_1515* (M0) and 2012-11-14_0015* (R0). plotquad_dtttfs.m has been run successfully. plotallquad_dttfs.m has been run and generated some comparison plots, but crashed while trying to merge them. All plots that were generated have been committed. Damping was restored at 02:49 am. No more tonight.
Thanks for Mark's late night efforts! I attach a merged plot of TFs showing:- Orange trace = L1 ITMX (thincp 2012−11−03), Phase 2a Black trace = L1 ITMY (thincp 2012−09−06),Phase 2a Magenta trace = H2 ITMY (thincp 2012−05−29), Phase 3b Dark cyan = H1 QUADTST (thincp 2012−11−14), Phase 2a
Added memory to the h1broadcast0 computer to avoid memory swapping. Fixed error in configuration file for monit, then started the daqd process to start broadcasting to the DMT computers.
As part of WP#3559 I changed the h1iopsusquadtst model to add a user switch to disable the watchdog. I also renamed B478 and ITMY to QUADTST in this model.
I then stopped the QUADTST user model and the phone promptly rang in the control room, it was Doug, who was using h1susquadtst to check out the ITMY suspension attached to the test stand, oops.
After a get together with Mike, Mark, Doug and Dave we figured out where the confusion was. We have stopped the IOP upgrade work for now so Doug can complete his work this afternoon.
We restarted H1DAQ to investigate "invisible" disconnected slow channels which the EDCU could not list by name. Restarting the DAQ caused h1sush2a (MC1,MC3) to go into a bad loop, constantly printing an error messge to the console. It was not ping'able or ssh'able. The error message was
nf_conntrack: table full, dropping packet
...ad infinitum
This is the network filter connection tracking system. We presume that the DAQ restart did something bad at the mx_stream FEDAQ network port on this machine. We had to power cycle to recover h1sush2a. Unfortunately h1sush2a also took down all MSR Dolphin machines, and all mx_streamers needed a restart.
At the end of this bootfest, the H1DAQ EDCU was now connected to all channels, so we could not reproduce the "invisible" disconnected channel issue. Patrick did some dataviewer tests for slow channels and did see some inconsistencies in minute trend data.
The IOChassis for H1 LSC and ASC were connected to the front ends and their timing was connected. We powered up h1asc0 first, and as expected it killed all user models on Dolphin connected computers and timing glitched their IOPs (a standard Dolphin glitch). Before we powered up h1lsc0 for the first time, we tried to disconnect its node from the dolphin fabric, but when it started we again dolphin glitched the MSR.
At the end of this bootfest, I copied the IOP models from L1 to run as h1ioplsc0 and h1iopasc0. There is an IRIG-B timing error on h1lsc0 which will look at later.
Yesterday I visited END Y and noticed that the BSC6 annulus ion pump was maxed out (red led). Also we have noticed that the pressure in the main volume has been cycling due to main ion pump voltage switching.
So, this morning Gerado and I reconnected the AUX turbo cart to the BSC 6 annulus and began pumping again. It appears the annulus had drifted up to ~1 torr. We do not know when the annulus ion pump railed - it may have been
due to a power interruption. This ion pump is not yet trended in the CDS but it looks like cabling is mostly complete. Gerardo is going to look into this.
To correct the cycling pressure in the main volume we programmed the main ion pump power supply to operate in "Fixed Voltage" mode at 5KV.
Mark B. Trying Stuart's TF script adapted for undamped and damped M0 and R0 TFs on ITMy (QUADTST), from 11:25 pm.
Mark B. Giving up - Stuart's script gives same array length mismatch error in windowing section as old - there must be something funny about the computing environment at LHO vs. LLO.
(Doug and Jason) We had to realign the CP to the ITMy, reset CP OSEMs and OSEM centering. WE set the ITMy gap between the CP S1 and the ITM S2 to ~20.04mm gap (20mm+/- 0.25mm requirement)and pitch parallelism is less than the 1.4mrad spec, yaw is out by 3min. We will tweak the CP yaw in the AM to correct. Then we will need new TF. Jonathan Hanks replaced the memory cards in the fiber pulling machine control computer as it would not boot up (parity error). The alignment X&Y translation stages that align the fiber mounting blocks is in need of some work as they are not rigidly mounted allowing the fiber to move too much during the pulling and making the laser beam alignment more difficult. LLO needs to replace fibers that broke in transit last week. I will continue with this in the am as well.
- JoeG, ChrisM, Luke, Alberto, Cheryl Today we installed the aLigo H1 spacers under the PSL periscope. This raised it about 1". The real upper periscope mirror, glued to a PZT, is now installed. The red eye-safe laser pointer is still attached to the periscope, and was used to look at the beam as it traveled from the PSL table to HAM2. The beam is making it from the PSL to HAM2. The periscope was moved to compensate for the misalignment of the beam on the viewport aperture, and is now about 1/2 an inch from the tube at the top of the periscope mirror. Tomorrow we'll discuss other possible options for splitting the difference in misalignment. I cleaned and reinstalled the EOM into the IO path. It's as close as possible back to it's original alignment, based on landmarks I left for myself, and will need to be aligned tomorrow when we get a beam back. picture 1) IO_MB_M2 optics boxes - old 1" optic and new 2" optic. picture 2) EOM reinstalled - ALS FI had to move and lost a needed beam dump. I just talked to Keita, and the proposed solution is to move the ALS path 1" toward the reference cavity. Will discuss at tomorrow's meeting.
TYPO: GAP set to20.04mm not 20.40mm
I have spent the past three days revisiting the contro room EPICS alarm handlers with the aim of making them more usable by reducing the occurance of false alarms.
I will document the changes in the CDS wiki and give operator training.
Alarms which may or may not be valid depending upon the commissioning status can now be disabled via a new alarm manager MEDM screen (H1CDS_ALARM_MANAGER can be launched from the SITEMAP).
To prevent alarms from being disabled and forgotten about, at 8am every weekday morning a script will run which will re-enable all alarms. At that time the operator will be able to reconfigure the alarm handlers for that day's operation. When the operator is not on shift (evenings, weekends, holidays), we can mute the alarm machine's speaker if desired so as not to disturb other users in the control room. In silent mode the alarm handlers will continue to log alarms. The 8am script will also restore the speaker to the nominal volume.
Mark B. I used DTT to take a set of undamped TFs for M0 and R0 of ITMy (connected up as QUADTST). Screenshots are attached. The graphs look pretty clean. P.S. Stuart has sent me a set of scripts that has worked recently at LLO but it needed adaptation and I wanted a quick result. I'll try it out this evening, after Jason is done.
Mark B. Here are the TFs again in the standard format with model comparisons. (I had to tweak the script to get it to recognize the file names, so I threw up a set of screenshots as a stop gap.)
Mark B. Set MC3 to undamped at 08:55 for a 20 minute spectrum series. (We already have a nice damped interval from last night).
Mark B. Damping restored at 9:25. Data analysis is underway, but the TFs from yesterday were clean and no problems are expected, so the MC3 is released for install.
Mark B. (This comment lingered in draft state for a week because I was hoping to be able to post plots, but plothsts_spectra.m has been crashing at the point where windowing is applied so I'm posting the GPS times so Stuart can have a look.) Damping on: tconvert nov 8 2012 08:00 pst 1036425616 Damping off: tconvert nov 8 2012 08:56 pst 1036428976
