One image attached here, and the rest found in Resource Space: https://ligoimages.mit.edu/?c=958
After saving a new version of a wiki page, you see the new version of the page with a message at the top that says:
For my instance in the Pcal wiki, I finish editing the wiki and arrive at this page:
https://awiki.ligo-wa.caltech.edu/aLIGO/pcalWiki#preview
If I click through a link and come back, I get popups.
But if I go through the normal wiki page:
https://awiki.ligo-wa.caltech.edu/aLIGO/pcalWiki
...everything works as expected.
The default nds2-client software for Mac OS X workstations for H2 has been changed to use nds2-client-0.8.2. Users of Matlab should execute matlab from a terminal window rather than clicking on the matlab icon in order to get the environment set up properly. Note that there are a few machines (end Y, psl enclosure) that have not been configured to run matlab from the command line yet. This will be done on a normal Tuesday maintenance schedule.
Following the test whereby h2fw0 and h2fw1 had their QFS file systems switched: the Sataboy QFS in the LDAS server room continued to have problems. We have decided to rebuild the /ldas-h2-frames file system. Since h2fw1 is currently writing to this system, I have put h2fw1 into partial mode. It is running, but not writing any frames at all. The /ldas-h2-frames file system has been unmounted from h2fw1.
I've mounted the /cds-h2-frames file system to both NDS machines during the rebuild and repopulation.
Attached are plots of dust counts > .5 microns.
The BSC8 HEPI was placed on the fixed stops during the Dome install as the crew can't help but stepping on the Crossbeams. Once the Dome bolts had been torqued, I suspended HEPI again and read dial indicators for a final delta from last alignment time. Of note, the before & after dial indicator readings captures the ACB swung back and in place and I saw a 2mil(.002") lower reading to the west while the ACB had a little more leverage on the system--may be within the noise of DI reading and robustness. Anyway, post final alignment numbers on Jan 19: Level--There is a 5mil tilt down on the northside. Our Dial Indicators are essentially at the Support Tubes so I put this tilt in the small category: 0.005"÷60"=80µrads Position: I see a <6mil shift to the South & <10mil shift West. Rotation: The dial indicators imply a CW (from above) of no more than 60µrads. This is worse case as the SE corner shifted South 9mils and the NW corner shift South 1mil. Averages would reduce the rotation amount. As this is a close out, I've attached 17 pages of my log book mostly showing dial indicator readings and elevation surveys while we adjust to IAS requests and install and center HEPI Actuators. I know it is a bit messy but it is a logbook. If you need clarification just ask. A couple notes: DI readings are in .001"(mils). Corner 1 is NE, 2 is NW, 3 is SW & 4 is SE---This is different from LLO established pier numbering. I'll try to conform to this in the future. V T & L corresponds to vertical, Transverse(N-S), & Longitudinal(E-W)
Due to the stellar performance of an assembly tech, the final numbers I report here are actually with the Vertical Actuators locked down. See a subsequent report on Tuesday 7 Feb that reports final floating position.
Jim & Corey (I helped a little) put the 600lbs on top of the H2 ETMY ISI Keel. We passed the Keel Mass components (50lbs each) from the floor to the man on a four foot ladder. In turn the mass was then passed to the man (Jim) standing on the Test Stand. The mass was placed as per D1000897-v2. This should put us very close to balanced when the mass is replaced after Cartridge install.
ETMY R0, L1, L2 Open Light counts, offsets, and normalising gain values. Offsets are calculated by dividing the open light counts by two and multiplied by (-1). The gain values are calculated such that the open light counts are normalised to 30,000cts. ----------------------------------------------------------- R0 controls@cdsws1:~ 0$ tdsavg 30 H2:SUS-ETMY_R0_OSEMINF_F1_IN1 H2:SUS-ETMY_R0_OSEMINF_F2_IN1 H2:SUS-ETMY_R0_OSEMINF_F3_IN1 H2:SUS-ETMY_R0_OSEMINF_LF_IN1 H2:SUS-ETMY_R0_OSEMINF_RT_IN1 H2:SUS-ETMY_R0_OSEMINF_SD_IN1 29408.9 26594.2 28718 28591 27628.8 29841.9 OSEMINF OFFSETS: F1 = -14705 F2 = -13297 F3 = -14359 LF = -14296 RT = -13815 SD = -14921 OSEMINF GAINS: F1 = 1.020 F2 = 1.128 F3 = 1.045 LF = 1.049 RT = 1.086 SD = 1.005 ------------------------------- L1 tdsavg 30 H2:SUS-ETMY_L1_OSEMINF_UL_IN1 H2:SUS-ETMY_L1_OSEMINF_UR_IN1 H2:SUS-ETMY_L1_OSEMINF_LL_IN1 H2:SUS-ETMY_L1_OSEMINF_LR_IN1 30801.6 26947.8 31350.3 32767 OSEMINF OFFSETS: UL = -15401 UR = -13474 LL = -15675 LR = -16384 OSEMINF GAINS: UL = 0.974 UR = 1.113 LL = 0.957 LR = 0.916 ------------------------------ L2 controls@cdsws1:~ 0$ tdsavg 30 H2:SUS-ETMY_L2_OSEMINF_UL_IN1 H2:SUS-ETMY_L2_OSEMINF_UR_IN1 H2:SUS-ETMY_L2_OSEMINF_LL_IN1 H2:SUS-ETMY_L2_OSEMINF_LR_IN1 23679.1 23181.5 26177.6 23786 OSEMINF OFFSETS: UL = -11840 UR = -11591 LL = -13089 LR = -11893 OSEMINF GAINS: UL = 1.267 UR = 1.294 LL = 1.146 LR = 1.261
Insulation work is finished. Next week the interior drywall will be attached, roof plywood installed, and feedthrus drilled.
This afternoon, after a quick consult between IAS/SUS (Dennis, Calum, Hugh, Gerardo, Travis, Doug, Jason, me), it was decided that we would proceed with translating the QUAD to bring the longitudinal measurement back into tolerance. So, we will mobilize to push the suspension ~4mm towards the corner station. Doug has confirmed that on Monday (and probably Tuesday) IAS/SUS together will: - fix pitch R0 - translate QUAD longitudinally, monitoring yaw, x, y --Need to insert possible "fix" to R0 roll/side shift if indeed we need to. Norna is checking on tolerances of these DOFs. - make IAS gap measurement - Adjust R0 to fix gap and yaw if needed. OSEM general health has been checked, and all open light voltages have been measured and set.
Shortly after my prompt alog, Dennis emailed the following: > Betsy et. al., I have discussed the 4mm longitudinal position error with Peter Fritschel. Peter and I both recall that the tolerance for the arm cavity length is more like centimeters. (The +/- 3 mm position may apply to the recycling cavity lengths.) Given this fact plus a possible change in longitudinal position related to the move into the WBSC6 chamber, we do not think it is worthwhile to correct this 4 mm positional error on the test stand. Once the cartridge is installed into WBSC6, a new IAS measurement of the longitudinal positional error will be made. It is likely that this error will be within the static correction range for HEPI, or at the very least well within the true allowable arm cavity length tolerance. Dennis Coyne > The longitudinal position tolerance can be relaxed for all arms, not just the H2 Y-arm for the ALS test. Dennis Coyne
Further, we solicited for roll and side-shift tolerances which need to be fixted, and received the following email from Ken Strain: Hi, a roll error mixes the coordinates, a transverse error of a few mm has little effect on the force (as the pattern still faces the TM), but the resulting torque changes a little. Due to the large ratio between the radius of the mirror an the ESD gap, and the relatively benign nature of the changes in torque, the effects are very small compared to the permitted variation in force/torque among the 4 quadrants due to relative pitch and yaw wedge angles (between TM and RM). With errors described, of order 2mm, I can't see any consequences worse than (or even comparable to) those that have already been permitted. Ken
While the emails above appear to clear the plate of many adjustments, we are currently working on the suspension to fix the yaw of both chains and height of the reaction chain.
On Monday, 1/30, Greg and I installed the H2 steering mirror mounting hardware in BSC8. We found that mounting it on the bottom 3 holes of the BSC flanges, as intended, made the mirror hardware sit on the chamber floor planks. We also found that the pivot rod,while just long enough to span the chamber and sit in it's mounts at each end, was short enough to allow it to shift and fall out of the mount. Black marks also came off of Greg's gloves when he installed the viton damping pads. On Tuesday, 1/31, issues with the install on Monday led me to decide to remove the hardware. Greg and Thomas worked in the chamber removing the hardware. They also used IPA and poly wipes to clean the two flanges that came into contact with the viton pads.
Greg G. Jim W. Scott L. Ed HAM 3 now has the housings and crossbeams installed. We used the spacers between the base clamp and the crossbeam this time and it worked really well, much better on the clearances. So well that HAM 2 should probably be retro-fitted with them.
We (Apollo Scott, Devil Ed & Myself) retrofitted the HAM2 with the Clamp Spacers to raise the foot in the housing.
Attached are plots of dust counts > .5 microns for today and yesterday. I have included a plot of H0:PEM-LVEA_DST15_MODE to show when the dust monitor at location 15 in the LVEA (in the clean room over BSC8) was disconnected today (the cable came loose).
David Jones was on the schedule today, but he needed to do work down at the EY. Thomas covered the morning, and I covered the rest of the day.
Today we detatched the telescope/ISC table from the cube, and put the tele/table on a small work table in the EY lab. The tele/table is not that stable, so the Genie is still supporting it.
Tomorrow we'll pick up the 5-axis thing from the VEA, mount that on another Genie, and detatch the cube. It seems that the actual transport will be some time next week.
Note to self:
Testing of coil amplitude parameters for actuating on the L1 stage for the ITMY QUAD was begun today by injecting white noise excitations from 0-1000Hz in the Longitudinal,Pitch, and Yaw DoFs of the L1 stage of H2 ITMY. The responses from these excitations were recorded in the L,P,and Y DoFs from the L1 stage and in the respective DoF of the M0 mass. These initial excitation parameters will be fine-tuned once the chamber is in vacuum, but they confirm our ability to actuate on the L1 stage and measure it's transfer functions to itself and the M0 stage.
THis morning: - The Apollo crew removed the walking plates at the dome flange. - Travis and I entered the chamber to resume EQ stop setting - Apollo craned the dome into place over the stack upstairs - Covered the QUAD with it's C3 cover when the Apollo crew removed all of the C3 covers above us (the dome flange was now hovering ~2ft above the flange) - Once the dome was mated to the flange and the "dust had settle for ~15 mins" we uncovered the QUAD and resumed prep work. - Performed peel of FirstContact of ITMy-HR, N2 filter blow, swab wipe dab-removal of some particulate (see a subsequent alog for details of this) - Removed most hardware and 2-step stool from chamber - Betsy left chamber, Thomas and Lisa entered - Travis, Thomas, Lisa swung ACB back into nominal position and removed stiffeneing hardware - - Broke a witness plate in the process so a quick cleanup and replacement of new witness plate in the same location - Took particle count samples from center of chamber - People swap again, Betsy in, Lisa/Thomas out - Removed balance of tools/hardware - Betsy/Travis removed internal Fiber Guards - Wiped floor from North-to-door, checking for tools/hardware - none found - Exited chamber - Leaned in and placed last 3 witness plates in center of chamber Door replacement preps are underway.
First Contact history for ITMy while at LHO:
Oct 10, 2012 - TCP-AR Painted - Horizontal application in lab
Oct 11, 2012 - TCP-HR Peeled - for chain mating
Oct 11, 2012 - ITMy-AR Peeled - for chain mating
Broken fiber
Nov 8, 2012 - ITMy AR - Painted - after dab cleaning with Calum, including band-aiding 4 bump stop areas.
Nov ~8, 2012 - TCP-HR Painted
Nov 17, 2012 - TCP-HR Peeled - for chain mating
Nov 17, 2012 - ITMy-AR Peeled - for chain mating, smudge remnants
Nov 18, 2012 - ITMy-AR Painted
Nov 18, 2012 - ITMy-AR Peeled - chains mated
Cartridge cleanup prior to flight
Dec 8, 2012 - ITMy-HR Peeled
Dec 8, 2012 - ITMy-HR Painted
Dec 8, 2012 - TCP-AR Peeled
Dec 8, 2012 - TCP-AR Painted
Dec 13, 2012 - ITMy-HR peeled partially for IAS - particulate observed:
https://ligoimages.mit.edu/?r=15516
In-chamber cleanup prior to door shut
Jan 31, 2012 - TCP-AR peeled - FC marks left behind near center
Jan 31, 2012 - TCP-AR painted
Feb 1, 2012 - TCP-AR peeled
Feb 1, 2012 - ITMy-HR Painted
Feb 2, 2012 - ITMy-HR Peeled - particulate observed:
https://ligoimages.mit.edu/?r=17801
BSC8 chamber closed.