* BSC6 (MY) Payload completely removed from Optics Table and all tooling is out. (see earlier entry) * Working to get the Vault seismometer and magnetometer moved from h2adcupem (in LVEA) out to MX. (Richard & Dave) * HAM6 Cleanroom was retrofitted for in-chamber work next week. (Jodi, Ski, Apollo Duo)
Following the reintroduction of the fast chans back into the DAQ, I put all the slow chans back into the EDCU. This is not exactly the same, since the EDCU will try to connect to all chans defined, whether they are in the DAQ or not. In order the "green" the DAQ overview on the main medm screen, I have redefined "green" to mean 10022 channels connnected. This value will change as IOC and decommissioned.
(Betsy, Corey, Mitchell, Travis) Today we finished off the removal of objects from the BSC6 Optics Table. Yesterday we removed the ETMy Optic Assembly, and some of the Transmission Monitor Telescope. Today, we removed the rest of the Telescope, weights (hockey pucks), and all the tooling needed to remove the ETMy. Additionally, the ribbon cable for the ETMy OSEMs was unbolted from the table and stuffed up and inside the Optics Table (to ease in the removal of the iLIGO BSC SEI system); want to note that this cable is still connected to the electrical feedthrough and should be disconnected as well. The door is still removed (for later de-install work), and Filiberto left a power supply out there for the BSC6 illuminator.
(Corey, Doug, Jodi, Kyle, Mitchell, Travis) Once BSC6 was vented and the door was removed (around 2:30-ish?), the crew started with removal of ETMy. This involved: o Much staging o Taking contamination sample of chamber o Setting ETMy on earthquake stops (with teflon on tips of stops) o Installing LOS Installation fixturing o Removing ETMy o Removing part of the ETMy telescope Tomorrow, we will remove the rest of the Telescope and the hockey puck weights.
Kyle-vented Y-mid Kyle, Travis-Removed BSC6 south door.
Today's Activities: Mid-Y activities - Kyle, Jodie, and others - venting of BSC 6 at Mid-Y. Michael R. making PSL measurements in LVEA ~14:45 local – contractor on-site for PSL flooring quote Corey and Betsy using crane near HAM1 and H1 PSL Filiberto, Richard, and contractors dismantling H2 racks Ski, Mike L. in LVEA - taking apart the old H2 PSL table enclosure Removal of the test mass begins at Mid-Y BSC 6 (Doug Cook, others) ---- By 16:15 local, work continues at the Mid-Y BSC 6 for the removal of the test mass.
As was pointed out, removing the ini files from the DAQ means that most H1 channels were removed and S6 data could not be trended. So I put back in the H1 ini files, but set their acquire flag to zero. All H1 chans should be viewable by dtt and dataviewer, and the archived frames should be accessible.
Ski, Kyle, Hugh - Craned forklift over XBM. Kyle, Ski, Travis, Andres, Betsy, Cheryl, Patrick, Hugh - Removed HAM2 East Door then rehung following Cheryl's in-chamber work. Removed HAM3 East Door and rehung following Cheryl's in-chamber work. Kyle - Started Y-mid purge air compressors.
The LHO X1 SEI test stand had some unusual parameters this morning. I was not able to isolate the table with older Robust Control filters, even with just putting a 0.1 gain on the controller. I noticed the un-filtered geophone channels nearly saturating. To be safe, I rebooted the frontend code, but the problem remained. I then checked the damping loops - they were engaged. However, the gains on the outputs were set to 1. I thought this was the nominal value until I tried to un-damp, then re-damp the table - no success. The actuators saturated immediately, tripping the watchdog. So, I then tried a negative gain and ramping from -0.1 to -1 - success. I had forgotten the gains on the Damping loop outputs were negative -1, while all other loops have positive gains. After this, control loops were still unstable, tripping the Displacement sensors. I noticed the Blend filters were off, and then after enabling, the robust control filters isolated the table. I am not aware as to how (or why) the values were changed in the medm, but the Damping outputs have been at +1 since Oct 21. The watchdog was on the brink of tripping with the +1 gain. They seem stable now with the negative gain - geophone channels are at safe levels and isolation is on.
Perhaps this is a reason for getting a conlog system for the SEI Test Stand.
Did not succeed. For some reason my compiles are deleting the object files and then complaining that they're gone. I don't know what is going on, so I copied the old code back for now. I restarted everything except the motor controllers, since we are not using them for awhile.
Seems that deleting my local .subversion directory and rechecking out the repository might have fixed it. Odd, might have something to do with the restore from the earlier hanford2 crash?
MMT2, MC2, and RM are on earthquake stops. I used both front and back stops for the small optics, and the South side stops on the RM (opposite the elliptical baffle). Everyone involved: Cheryl, Betsy, Patrick, Kyle, Ski, Travis, Andres
Big thing today was removal of HAM 2 and 3 doors, EQ stops screwed in on MMT2, MC2, and RM. Doors are back on. Dave removed H2 channels from the DAQ and several H1 channels as well. Patrick is working on several IOCs, which are currently disconnected TCS enclosures were disconnected from the laser safety network, Dani is aware of this Dani removing optics from ISCT10, finished today Cleaning at MY and EY Apollo at EX More cable pulling from Filiberto/Cyrus
alog had a possible authentication error over the past 20mins. I restarted the httpd process and it seems to be ok now, but not sure if the restart really fixed it.
As part of the H2 deinstall and the H1 mothballing, I am removing channels from the iligo frames when they contain no useful information. We are doing this to reduce the frame size, which saves on LDAS tape costs and increases our local data lookback period. I removed disconnected chans plus all H2 chans from H0EDCU.ini I edited the fb0c master file and removed many inifiles. svn versions: 174 = end of S6 177 = today's version
I have turned off two stages of heat in the LVEA. With lights and cleanrooms operating we should be able to get by without these.
The seismic SVN repository has been moved to Kerberos access control, with the new location being: https://svn.ligo.caltech.edu/svn/seismic. (The previous site was https://svn-private.ligo.caltech.edu/repositories/seismic) Instead of wiping away the old directory and checking out the entire new one, I simply switched the site the SVN uses to update its local copy. I switched the site for the LHO CDS "controls" account (in the control room) and the X1 SEI Workstation copies. On the X1 SEI workstation, the repository local path is still the same: '/opt/svncommon/seisvn/seismic/HAM-ISI/' And in the Control Room, the "controls" user copy is still located at: '/hanford2/users/controls/isi_local_files/SVN/seismic/HAM-ISI/' New user names and passwords are the LIGO.ORG ones. On the workstation, here's the command I entered to switch the checkout site: >> svn switch --relocate https://svn-private.ligo.caltech.edu/repositories/seismic/HAM-ISI/ https://svn.ligo.caltech.edu/svn/seismic/HAM-ISI/ --username jeffrey.garcia@LIGO.ORG *entered in the '~/seismic/HAM-ISI/' directory.
Kyle, Ski - removed BSC1 south door. Rehung a few hours later. Kyle - Removed all but (4) door bolts from HAM2 and HAM3 East doors (Note-dropped large wrench from top of HAM3 and it hit cross beam)
Note to Operators regarding door removals: Whenever a BSC or HAM chamber is prepped for door removal you will see annulus ion pump alarms. These may remain in alarm for the duration of the vent. Ask Kyle or John for more info if needed.
We moved to ISCT10. One particularly dirty lens that was just sitting on top of a small aluminum table OUTSIDE of ISCT10 enclosure along with viewers and such (not used for anything, but who'd put a lens OUTSIDE of the table enclosure?) was thrown away. Finger print and scratches all over. At some stage all the lights of the card reader went out. This was found by me later when I tried to swipe out of ISCT10, I called the control room, and Jonathan Berliner found that ISCT10 was "offline", whatever that means. LSO (Dani) reset my card so I was able to continue working, but ISCT10 is still "offline". Did somebody cut off the power to the access system for this table?
