I started the x1ioptstsus1 and x1susquad models on the bscteststand2 computer in the staging building. Manually started awgtpman for iop after correcting an error in the testpoint.par file.
Jim Batch and I have turned off the following coil drivers and AI chassis at EY to allow Alex and company to test and examine the front-end code in search of "mx-streams" issues on the H2 system.
SEI Rack 3 EA SEI coil driver chassis
SUS Rack 3 EA AI filter boxes
TCS Rack 1 EA Ring Heater Driver, 1 EA AI filter box
These should be re-enabled on Monday morning or after Alex has finished his investigations.
Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot. The data was taken from approximately 6 AM to 6 PM. Also attached are plots of the modes to help show when they were running. I moved dust monitor 4 in the LVEA into the clean room over the test stand holding the cartridge assembly. I put it in a narrow space between one of the test stand legs and the clean room curtain.
I noticed on the H1SUSMC2_GDS_TP screen a "red" status under the first (of four) elements for the "RT NET STAT". All other SUS models are "green". Reported to Jim Batch to look into...
Dave B informed us that it is likely triggered and then latched when the model is started. "Diag Reset" clears the error condition.
After HAM1 needed a large movement to rectify some measurement issues the springs had come into hard contact with the side of the housing collar. I re-centered the springs and loaded the weight back to the previous values. This brought the support tubes to +- 25 thousandths of an inch. During the process of bringing the support tubes to nominal one of the springs started to bind, and after removing the nut one could see several demolished threads. Tyler G. expertly repaired them and I replaced the spring. The support tubes are now sitting within +- 5 thousandths although with the amount of activity around the dial indicators some of those values may be adulterated. After I locked the HEPI feet down I re-zeroed the dial indicators and hopefully placed them in better positions for when IAS can shoot the table.
There was some concern about the threads of the spring. The threads were cleaned up on the lathe knocking out the material that had been deposited in the root of the thread. This added a bit of slop where some crests had been lost but I flipped the spring in the housing so the areas supporting the tension of the spring are on good threads.
To enable the more automated Matlab TFs to be taken on the LHO triple test-stand, I have added the following channels (and corresponding data rates) to the channel list:- X1:SUS-HXTS_M1_TEST_L_OUT_DQ 2048 X1:SUS-HXTS_M1_TEST_T_OUT_DQ 2048 X1:SUS-HXTS_M1_TEST_V_OUT_DQ 2048 X1:SUS-HXTS_M1_TEST_R_OUT_DQ 2048 X1:SUS-HXTS_M1_TEST_P_OUT_DQ 2048 X1:SUS-HXTS_M1_TEST_Y_OUT_DQ 2048 These have been added to the *.ini files of both models i.e. "X1SUSHXTS05.ini" and "X1SUSHXTS27.ini". After logging into the test-stand front-end "ssh tripleteststand", the frame-builder has been restarted by switching models using the script "useModel27", waiting a 60 seconds, then finally returning back to the required model "useModel05". Running the "LHOTripleTFs.m" Matlab script from the "susSVN/trunk/Common/MatlabTools/SchroederPhaseTools" directory, now successfully extracts the above channels from the frame data.
Worked on cable installation in electronics room racks ISC-C3 and ISC-C4. While powering up electronics in ISC-C4, connected ±18V backwards to either: D1002735 Harmonics Generator Power Supply - SN S1000791 or D1000124 RF Distribution Amplifier - SN S1000604 Units seem to be powering up, but will look closer once testing begins. Filiberto Clara
I was notified of the following activities:
Received several (4 of them) dust alarms from the dust monitor moved by Patrick to the cleanroom for the test stand (West bay, north most test stand).
Two PSL alarms.
First thing this morning, the Apollo crew raised the chamber cleanroom back up to its usual working height and removed the lower portion of the leg jacks. Next, they craned the dome back over to the BSC. The walking plates were removed and the dome was re-installed with all bolts in place. Once the dome was in place, Thomas supervised the removal of ACB parts from the chamber to a large C-3 covered work table. The ACB parts were covered with C-3 and transported to the HAM cleanroom for dis-assembly. After much discussion, the BSC flooring was removed from the chamber, preserved clean, and transported to the HAM cleanroom for Wrap-Bag-Tag. The door was returned to the chamber. (Not bad for a day's work!) While Mark L. was in-chamber to retrieve the BSC flooring, he surveyed the chamber bottom for detritus after the flooring was removed: this is our SOP when doing ICC. This chamber has the potential to be quite instructive WRT contamination issues because we have very sharp data points for length of exposure and type of activity. The highlights (or low-lights, as the case may be): two relatively large pieces of UHV foil, at least three human hairs, and lots of Al fines. See a few pix below.
Checked DB25 connectors for IO QPD , ISC QPDs and IO/ISC picos and they're all fine. Measured from outside, no shortcircuit between pin13 and vacuum chamber.
Firstly, a set of MC2 (HSTS) M1-M1 TFs were taken, with damping loops OFF, for all DOFs (see 2012-10-03_H1SUSMC2_M1_ALL_TFs.pdf), which show good agreement with the model. These TFs were then repeated, but with damping loops ON. Both damped and undamped TFs obtained have been compared to all other LLO HSTSs at the equivalent test Phase 3a, (see allhstss_2012_10_04_Phase3a_MC2_ALL_ZOOMED_TFs.pdf). Power spectra have been taken with damping loops both ON and OFF for each stage (see 2012-10-04_1000_H1SUSMC2_M*_ALL_Spectra.pdf). Power spectra data, with both damping ON and OFF can then be compared to LLO MC2 during Phase 3a testing (see allhstss_2012-10-01_Phase3a_MC2_ALL_Spectra_Don.pdf and allhstss_2012-10-01_Phase3a_MC2_ALL_Spectra_Doff.pdf). n.b. the purge-air was off for the LLO measurements. In addition, power spectra for specific degrees of freedom (L, P and Y) can be more conveniently compared across multiple stages (M1, M2 and M3) of the same suspension in the final plot found below (see allhstss_2012-10-01_Phase3a_MC2_H1SUSMC2_M1M2M3_Spectra_ALL_Don.pdf). Finally, all data, plots and scripts have been committed to the susSVN as of this entry. This should now provide sufficient data to be able to complete Phase 3a testing of this suspension
Firstly, a set of PR2 (HSTS) M1-M1 TFs were taken, with damping loops OFF, for all DOFs (see 2012-10-03_H1SUSPR2_M1_ALL_TFs.pdf), which show good agreement with the model. These TFs were then repeated, but with damping loops ON. Both damped and undamped TFs obtained have been compared to all other LLO HSTSs at the equivalent test Phase 3a, (see allhstss_2012_10_04_Phase3a_PR2_ALL_ZOOMED_TFs.pdf). Power spectra have been taken with damping loops both ON and OFF for each stage (see 2012-10-04_1015_H1SUSPR2_M*_ALL_Spectra.pdf). Power spectra data, with both damping ON and OFF can then be compared to LLO PR2 during Phase 3a testing (see allhstss_2012-10-01_Phase3a_PR2_ALL_Spectra_Don.pdf and allhstss_2012-10-01_Phase3a_PR2_ALL_Spectra_Doff.pdf). n.b. the purge-air was off for the LLO measurements. In addition, power spectra for specific degrees of freedom (L, P and Y) can be more conveniently compared across multiple stages (M1, M2 and M3) of the same suspension in the final plot found below (see allhstss_2012-10-01_Phase3a_PR2_H1SUSPR2_M1M2M3_Spectra_ALL_Don.pdf). Finally, all data, plots and scripts have been committed to the susSVN as of this entry. This should now provide sufficient data to be able to complete Phase 3a testing of this suspension.
Yesterday Cheryl and I started working on H1 Faraday high power testing in the PSL. We checked the alignment and mounted power meters for isolation, transmission and REFL measurements. We picked off about 1% of the transmitted beam for thermal lens measurements and placed several beam dumps to catch stray beams.
Rick S and Michael R connected for us another high-power water-cooled power meter to a second chiller (thank you!). Cheryl mounted a beam block to catch the AR beam from the first IO mode matching lens to IMC (IO_MB_L1), which was previously resting on a dog clamp next to the EOM case.
Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot. The data was taken from approximately 6 AM to 9 PM. Also attached are plots of the modes to help show when they were running.
Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot. The data was taken from approximately 6 AM to 9 PM. Also attached are plots of the modes to help show when they were running.
[Stuart A, Betsy B and Travis S] Following the installation of PR2 (HSTS) and MC2 (HSTS) suspensions into the HAM3 chamber, and confirming that the optics were freely suspended, by running un-damped M1-M1 Matlab TFs (available in LHO aLOG entry 4353), B&K hammer measurements could then commence in-chamber. Both PR2 and MC2 suspensions were fully dog-clamped down, and torqued to the requirement. The tri-axial accelerometer was attached using an interface plate, to a horizontal strut near the top of each of the structures, i.e. the opposite side to where the vibration absorbers are fitted. For convenience, the axes of the accelerometer were aligned with the axes of the suspension (i.e. X = longitudinal, Y = transverse, Z = vertical). The hammer was used in two places to excite the structure, the first being +X at the front of the structure, and the second being +Y on the side of the structure. Image #554 below shows the LLO PR2 structure, with the accelerometer installed. Image #547 below shows the LLO PR2 structure, with the impact hammer locations highlighted. Image #2338 below shows the LHO HAM3 B&K hammer measurement set-up (PR2 in foreground, MC2 in background). Measurements were taken using the "simple hammer display 3.pls" template available in T1000697. A hammer trigger threshold of approximately 40N was found to work best in all cases. For PR2, measurements were initially taken without vibration absorbers fitted, and then repeated after installation of the vibration absorbers. However, for MC2, vibration absorbers had already been installed, and it was deemed too much of a risk (handling & contamination concerns) to remove them. So in this case, B&K measurements proceeded on MC2 with the vibration absorbers already fitted. B&K hammer measurements have been taken for the following conditions (each corresponding raw data-set available below):- PR2 - Test 1a - VA not fitted - SUS unlocked - (SIDE HIT) PR2 - Test 1b - VA not fitted - SUS unlocked - (FRONT HIT) PR2 - Test 2a - VA fitted - SUS unlocked - (SIDE HIT) PR2 - Test 2b - VA fitted - SUS unlocked - (FRONT HIT) MC2 - Test 3a - VA fitted - SUS unlocked - (SIDE HIT) MC2 - Test 3b - VA fitted - SUS unlocked - (FRONT HIT) The raw data has been exported from the B&K pulse analysis software and into an excel spreadsheet for comparing and plotting. The spreadsheet and a merged pdf of relevant plots are available below. On PR2, the effect of the vibration absorbers in damping the first and second resonance modes is clearly visible. The first resonance peak also drops from ~94Hz down to ~89Hz. For MC2, the first resonance peak is visible at ~91Hz.
No real issues here, took plenty of time, balancing the lift, lowering the cleanroom, positioning the Cartridge over the Test Stand. Dale took lots of photos, I'm sure he'll log soon. Thanks to Jim & Mitchell and the Apollo Crew Randy, Chris, Mark, Ed, Scott & Bubba.
Keita and I installed the Hepa Filter on top of the ISCT1 Enclosure and we craned this enclosure on top of the cleaned table (Ameristat is now removed). The Enclosure is not secured onto the table.
While we were at it, we installed the Hepa Filter on the IOT2R (small). The remainder of the Hepa filters have been stored at MY (for H1) & will (or have been) be stored in the Mechanical Room for India.
Removed all the iLIGO optics off the future ISCT6 & ALS-EX tables (all these optics are "stored" on the aLIGO IOT2L---lots of inventorying to do!!). Periscopes are on the floor outside of the Squeezer area.
As requested by Jeff K, I have updated the compensation filters for H1 HXTS suspensions. A similar update previously been carried out at LLO by Joe B (see LLO aLOG entry 4417). The process was first tested with the SR2 (HSTS) suspension, using the prepare script, located in "/ligo/svncommon/SusSVN/sus/trunk/Common/MatlabTools/", with the following Matlab command:- prepare('H1','SUS','SR2','HSTS') Updated foton filter files were then visible from the GDS_TP screen for h1sussr2. The "Coeff Load" button was selected to import the new filters. A cursory check over the medm screens indicated that new filters were in place (see note below). This was then repeated for PR3 (HLTS), PR2, PRM, MC3, MC2, and MC1. The process initially failed (hung-up) for MC2, as this was found to already have in existence h1susmc2.txt.bak and h1susmc2.bak.txt, which prevented the process from completing. Once these were deleted, prepare scripts could complete. N.B. it was observed that the following models did not contain any DAMP filters: SR2, PR3, PRM. I shall confirm if this is intended with Joe B or Jeff K.
Joe B informed us that the "Prepare.m" script did not currently populate the DAMP filter banks. So I have manually copied and pasted via Foton the 'default' filter banks from the MC2 (HSTS) to SR2, SRM and PR3 (HLTS). During this process I also transferred over the normDOF calibration filter from the DAMP filter bank too, with the exception of PR3 given we have not yet calibrated a HLTS suspension.
