The corner Beckhoff system was switched to the new target area. The old one is now defunct. Almost all hardware is now linked in the system manager and available in the PLCs.
After the HAM3 cleanroom was pushed as far north as possible, the curtains were modified to closely interface with BSC2 and provide clean space for the spool replacement. The small spool piece was inserted and attached to the BSC2 flange. Next, the large spool piece was inserted and attached to the small spool piece. The large spool piece is very close to the HAM3 flange. Once the hard cover on the spool piece and the soft cover on HAM3 are removed, the bellows will be extended so that the spool is married to the chamber. I expect that all spool and appropriate flange bolts will be torqued before the Apollo crew leaves for the day. That gets us through #11 on the checklist. 1. Done-Remove Walking Plates from BSC 2 (Place in E-Mod Staging Cleanroom) 2. Done-Replace dome on BSC2 (Check with SEI first: unlock ISI check cables) 3. Done-Place hard cover on BSC2/HAM3 spool openings 4. Done-Install curtains on HAM3 cleanroom 5. Done-Move BSC cleanroom to beamtube by East Bay pipe bridge 6. Done-Dis-assemble Work Platform (Place on floor by BSC7) 7. Done-Move HAM3 cleanroom north as far as possible 8. Done-Close gaps in cleanroom to contain BSC2 spool area 9. Done-Move SEI related electronics over center of spool area 10. Done-Insert small spool piece 11. Done-Insert large spool piece 12. Install HAM3 east door 13. Move cleanroom from pipe bridge area to HAM4-plug in-turn on 14. Call for HAM4 cleaning 15. Install HAM2/1 east doors 16. Install HAM 2/3 west doors 17. Install BSC1 viewports 18. Remove HAM4 north door 19. Install blank on septum plate between BSC2 and HAM4 20. Install HAM4 north door
WP 3820.
I upgraded all four psl models (dbb, fss, iss, pmc) to the latest version. The steps are:
First look through the top level medm screens looks good. On the fss screen the RFPD_DC signal is white because this channel has been removed.
I'll hand it over to Michael R for further check out. This closes WP3820
I'm going to turn off the damping on PRM for a 20 minute window starting at about 10:55 am, to get a spectrum to triple-check for rubbing.
Spectra look clean.
EE sees a fault in the Kaman Satellite box which is mounted in the Pier Pod (See LHO aLogs 6162 & 6175). These Kaman Boxes are tuned/calibrated to the actual Inductive Position Sensor (IPS) coils but changing these out is a bit more invasive. Can be done but will take some time. Meanwhile we have replaced the Pier Pod with another. Bad/Removed PierPod/Kaman: S1202914/S0812221-06-04 Replaced w/: S1202909/S0812221-02-10 This will at least allow data for positioning to be trended.
Attached is a 3 day trend of the BSC2 HEPI IPSs. Corner3 has been dead forever (60 days at least.) The trends show the lock of HEPI Monday, the Pod removal Tuesday, the noisy work Tuesday afternoon, and the Pod replacement this morning.
Jim unlocked HAM2 and HAM3 ISIs. HAM3 door covers are restricted by bow attachments on the door so they don't couch HAM3 ISI. Door covers for HAM2 were half opened to prevent them from touching HAM2 ISI.
After Sheila reset all WDs, IMC started flashing with 00 mode. The alignment was actually pretty good.
PRM was put in an aligned position, and the beam made it through the baffle towards HAM1 though the horizontal motion of the beam was large enough that the beam clipped once in a while, but once things are under vacuum this should settle down.
All in all we're in a very good shape.
I'm attaching CPS trends for both chambers, capturing before and after unlocking (unlocking is marked by the noisy areas in the middle of each plot). Most shifts are ~200 counts or less (.25 milli-inches), but the biggest is about 600 counts (.75 milli-inches). Pretty good.
The Apollo stayed until 6 pm and got thru #7 on the checklist. Below, please find the checklist that Apollo is using to sequence their close-out activities. 1. Remove Walking Plates from BSC 2 (Place in E-Mod Staging Cleanroom)-done 2. Replace dome on BSC2 (Check with SEI first: unlock ISI check cables-done 3. Place hard cover on BSC2/HAM3 spool openings-done 4. Install curtains on HAM3 cleanroom-done 5. Move BSC cleanroom to beamtube by East Bay pipe bridge-done 6. Dis-assemble Work Platform (Place on floor by BSC7)-done 7. Move HAM3 cleanroom north as far as possible-done 8. Close gaps in cleanroom to contain BSC2 spool area 9. Move SEI related electronics over center of spool area 10. Insert small spool piece 11. Insert large spool piece 12. Install HAM3 east door 13. Move cleanroom from pipe bridge area to HAM4-plug in-turn on 14. Call for HAM4 cleaning 15. Install HAM2/1 east doors 16. Install HAM 2/3 west doors 17. Install BSC1 viewports 18. Remove HAM4 north door 19. Install blank on septum plate between BSC2 and HAM4 20. Install HAM4 north door
Dave B., Patrick T. This work falls under permit number 3833. This afternoon we installed new EPICS IOC code for the dust monitors in /ligo/apps/linux-x86_64/epics-3.14.12.2_long_sc. The module code is met_one_227b-1.0.0 and the IOC code is dust_met_one_227b-1.0.1. The targets are in /ligo/lho/h0/target. The IOCs are running on h0epics2. The code changes the channel names as follows: H0:PEM-LVEA_DST$(ID)_3 -> H0:PEM-CS_DUST_LVEA$(ID)_300NM_PCF H0:PEM-LVEA_DST$(ID)_5 -> H0:PEM-CS_DUST_LVEA$(ID)_500NM_PCF H0:PEM-LVEA_DST$(ID)_MODE -> H0:PEM-CS_DUST_LVEA$(ID)_MODE H0:PEM-LVEA_DST$(ID)_RH -> H0:PEM-CS_RELHUM_LVEA$(ID)_DUSTMON H0:PEM-LVEA_DST$(ID)_TEMP -> H0:PEM-CS_TEMP_LVEA$(ID)_DUSTMON_DEGF H0:PEM-LVEA_DUST_LOC_$(ID)_STATUS -> H0:PEM-CS_DUST_LVEA$(ID)_STATUS H0:PEM-LAB_DST$(ID)_3 -> H0:PEM-CS_DUST_LAB$(ID)_300NM_PCF H0:PEM-LAB_DST$(ID)_5 -> H0:PEM-CS_DUST_LAB$(ID)_500NM_PCF H0:PEM-LAB_DST$(ID)_MODE -> H0:PEM-CS_DUST_LAB$(ID)_MODE H0:PEM-LAB_DST$(ID)_RH -> H0:PEM-CS_RELHUM_LAB$(ID)_DUSTMON H0:PEM-LAB_DST$(ID)_TEMP -> H0:PEM-CS_TEMP_LAB$(ID)_DUSTMON_DEGF H0:PEM-LAB_DUST_LOC_$(ID)_STATUS -> H0:PEM-CS_DUST_LAB$(ID)_STATUS H0:PEM-EX_DST$(ID)_3 -> H0:PEM-EX_DUST_VEA$(ID)_300NM_PCF H0:PEM-EX_DST$(ID)_5 -> H0:PEM-EX_DUST_VEA$(ID)_500NM_PCF H0:PEM-EX_DST$(ID)_MODE -> H0:PEM-EX_DUST_VEA$(ID)_MODE H0:PEM-EX_DST$(ID)_RH -> H0:PEM-EX_RELHUM_VEA$(ID)_DUSTMON H0:PEM-EX_DST$(ID)_TEMP -> H0:PEM-EX_TEMP_VEA$(ID)_DUSTMON_DEGF H0:PEM-EX_DUST_LOC_$(ID)_STATUS -> H0:PEM-EX_DUST_VEA$(ID)_STATUS H0:PEM-EY_DST$(ID)_3 -> H0:PEM-EY_DUST_VEA$(ID)_300NM_PCF H0:PEM-EY_DST$(ID)_5 -> H0:PEM-EY_DUST_VEA$(ID)_500NM_PCF H0:PEM-EY_DST$(ID)_MODE -> H0:PEM-EY_DUST_VEA$(ID)_MODE H0:PEM-EY_DST$(ID)_RH -> H0:PEM-EY_RELHUM_VEA$(ID)_DUSTMON H0:PEM-EY_DST$(ID)_TEMP -> H0:PEM-EY_TEMP_VEA$(ID)_DUSTMON_DEGF H0:PEM-EY_DUST_LOC_$(ID)_STATUS -> H0:PEM-EY_DUST_VEA$(ID)_STATUS Dave renamed the minute trend files to reflect these changes (directory name mapping is in the attached text file). The medm screens, autoBurt.req files and the alarm handler configuration file were also updated to match these changes. I also removed the transient period for showing alarms in the alarm handler configuration file, updated the guidance and added some dust monitor locations. The new IOC code also fixes a division error when the sampling time is zero in the particles per cubic foot calc records. TO DO: I still need to update the alarm limits and severities.
I changed the database records to add default alarm values and severities. I also added [RO] to the beginning of the description fields. This can be used to indicate which channels should be read only when generating the autoBurt.req file. These changes were committed in the dust_met_one_227b-1.0.2 tagged release. The IOC target directories were changed to use this release and restarted. I set the dust count alarm levels by hand. This should complete the work permit.
The Apollo crew got the Dome installed this afternoon. Once the Dome was over head and all the covers were removed, Jim unlocked the ISI and we inspected the cable routing. Here are a few photos to record the cable dressing.
Richard & I did some quick diagnosis and then pull the Pier pod from corner3. So we have no HEPI positioning monitoring on corners 3 or 4. Corner 4 gets its power from corner3. Please mind all the BSC2 dial indicators.
- IO at HAM2 working on closing out alignment work, done. - Travis - Dog clamps required on BSC2 ITM Elliptical baffles. - Changed mats - SUS-IM models went down due to timing error, restored the front end to 4AM this morning per IO request. - PCAL in the H2 enclosure - Dome placed on BSC2
I added the biquad=1 flag to the cdsParameters block of the following models, and did a make (but not a make install yet) to test for successful compilation. All were OK, so I svn committed them. I'll do a make install later, when people are done for the day. h1susauxb123.mdl h1susauxb6.mdl h1susauxh2.mdl h1susauxh34.mdl h1susauxh56.mdl h1susbs.mdl h1susbstst.mdl h1susetmy.mdl h1susitmy.mdl h1susmc1.mdl h1susmc3.mdl h1suspr2.mdl h1suspr3.mdl h1susprm.mdl h1susquadtst.mdl h1sussr2.mdl h1sussr3.mdl h1sussrm.mdl h1sustmsy.mdl The following models already had the flag and will not be touched: h1susim.mdl h1susmc2.mdl h1susomc.mdl
After Cheryl finished I mostly completed the job: * All models got a make-install. * All models were restarted. * All models got a diag reset. * All models were BURT restored to the state at 14:00 hours. * Damping was reenabled on etmy, itmy, mc1, mc3, pr2, pr3, prm * Damping was NOT reenabled on bs or tmsy because the USER DACKILL screens don't come up. * The PRM has such a large offset that it trips the IOP watchdog after a few minutes. I presume the IO team has been running it with the bypass enabled. * The backup for MC1 was corrupt and I had to manually edit out some lines with incomplete strings, e.g., "LOCK . Dave says this looks like a bug he thought had been fixed and is investigating.
The problem with the DACKILL screens turned out to be because they had been set to open on the right physical screen and this had gone to sleep on opsws1 yesterday. I opened /opt/rtcds/userapps/release/sus/common/tmts/SUS_CUST_TMTS_DACKILL.adl and /opt/rtcds/userapps/release/sus/common/tmts/SUS_CUST_BSFM_DACKILL.adl in MEDM, dragged them to the left screen, made a trivial change and reverted it to "dirty" the window, and saved and committed them.
I had to go home in the afternoon, so we couldn't do any alignment work, which should be done on Monday. EY is in laser hazard.
We did check the beam diverter. (This one should be replaced anyway, but not before moving the entire EY to H1 position. https://services.ligo-wa.caltech.edu/integrationissues/show_bug.cgi?id=83)
Beam diverter is connected to F2-2C2 feedthrough on BSC6. From outside, pin1-14 is the coil, pin2-15 is one of the reed switches (SW1), and pin3-16 is the other (SW2).
When pin1 is positive and pin14 negative, the beam diverter moves from "open" position where the mirror is tipped toward EY to "closed" position where it is tipped away from EY.
However, we've found that pin1 is short-circuited to the chamber and the building ground. This means that you need a floating supply to drive it (which is not a problem for a proper driver but is a problem when you're using a power supply with one of the pins grounded). If for example the negative is grounded and if you try to "close" it by supplying positive to pin 1, all current goes to the ground via short circuit, not the coil.
Anyway, the problem is somewhere in the chamber. This should be checked when EY is moved to the H1 position, most likely an offending cable should be replaced.
One of the reed switches is still stuck, despite a previous report that it was somehow magically unstuck: https://services.ligo-wa.caltech.edu/integrationissues/show_bug.cgi?id=2
When in "open" position both of the switches are closed. When "closed" one of the switch opens.
After building five Beam Diverters, I noticed issues with the Reed Switches. I was able to get them to work after orienting the Sensor Magnet in a position which was related to polarity (Chris Guido at LLO noted that the position of this little magnet determined Switch functionality). So, it will be good to check this Beam Diverter out when we pull it out.
Dan tested beam diverter and everything worked including the motor and the two reed switches.
That's strange as one of the two reed switches was stuck before, but somehow it's unstuck. Anyway it's good.
I'm curious to get my hands on this Beam Diverter, after my experience with building five of them. For me, the Sensor Magnet's polarity seem to affect the functionality for the Reed Switches (Chirs Guido mentioned the position of this magnet was more the issue for him).
Everything came back up fine as far as I could tell. Servos are all locked. I updated the safe.snap files as well.