JimW, HughR, HugoP,
Finished payloading HAM2-ISI.
Set up the lockers. Lockers needed an horizontal set up only. We did not change shims. The Locked/Unlocked shift is comparable to HAM3-ISI's: way below requirements.
Sensors | Table Locked (Counts) | Table Unlocked (Counts) |
Difference(Counts) |
H1 | -3765.00 | -3613.00 | 152.00 |
H2 | -2213.00 | -2109.00 | 104.00 |
H3 | 385.00 | -101.00 | 486.00 |
V1 | 575.00 | 561.00 | 14.00 |
V2 | -493.00 | -376.00 | 117.00 |
V3 | -839.00 | -285.00 | 554.00 |
Requirements are (E1000309-v12):
shift<1600cts
Readouts<2000cts
The Horizontal CPS readouts are slightly out of requirements on 2 horizontal CPSs (H1 and H2). Targets are a bit too close to their CPSs, but they are far from contacting, so there is nothing to worry about. The zero of these horizontal CPSs will be reset once the payload, and thus the lockers, are in final state (after the IMC test).
Only the blade spring profiles of corner 1 and 2 could be measured. They are within requirements.
Blade # | Flatness (mils) |
1 | 8 |
2 | X |
3 | 2 |
Requirements are (E1000309-v12):
Flatness<15mils
We checked the level of the Optical Table with the optical Level: +-0.1mm. More or less right at the 100urad requirement.
Locker shims and mass budget are recorded. The cables were dressed and HAM2-ISI was left unlocked, ready for testing on Monday.
The SUS-to-ISI WatchDogs IPC communication is currently bypassed with a constant in SUS's MC1 and MC3 models. The constant is 0, which correspomds to OK state of SUS. A screen-shot of these models is attached.
In this configuration, MC1 and MC3 cannot trip HAM2-ISI. In order to safely actuate on HAM2-ISI, this constant needs to be removed, and connections need to be made in the following models:
Note: These constants were put in to avoid tripping HAM2-ISI during the chamber-side tesing of MC1 and MC3.
Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 PM Dec. 13 to 6 PM Dec. 14. Also attached are plots of the modes to show when they were running/acquiring data.
Repairs OK, new joints OK -> still have a leaking 4.5" blank on BSC2 dome ((1)16.5" x (3)4.5" cluster) from initial leak testing that needs to be fixed. This is the only joint on this volume (Vertex minus HAM1, 2 and 3) that remains to be fixed (that I am aware of - reminder, if you install a new flange, you need to label it as "NOT LEAK TESTED" otherwise I won't know it hasn't already been tested)
Again, for my own record, next week we need to:
Vacuum off suspensions for localized particulate.
Set lower stage AOSEMs to 50% OLV.
Remove FC and spot clean PR2.
Sopt clean MC2.
Swap PFA EQ stops with fluorel tips.
Set EQ stops and lock all nuts.
This afternoon we finished prepping MC1 and MC3 for the pump down scheduled for next week. As per my prior alog list, we:
Tweeked the lower stage AOSEMs into place (Travis did the hard ones via YOGA moves across the table after I gave up).
Swapped the PFA EQ stops with the fluorel ones.
Installed the VAs.
Locked all the EQ stop nuts.
Add-on task - we dabbed a few particles off of the MC1/3 faces and then decided it was futile and will have to wait until the next vent for FC cleaning. Note, while adjusting the AOSEM upside-down teensy set screws which are an inch away from the optic facees, we might have brushed a gloved knuckle against the MC1 AR optic. Uugh. Chalk that one up to an addition to a design change list or at least a lesson learnt.
Adding to the to-do/install list, Richard is also going to try to tackle the ground loop checks on HAM2/3 next week.
We'll also finish pump-prep work on the HAM3 SUSes (PR2 and MC2) next week.
The Final In-Chamber Testing Report of HAM3-ISI was validated today. It is available under the DCC, as the 3rd section of E1200507 - HAM3-ISI Phase II Testing report (pages 35 to 58)
HAM3-ISI is now locked so the first contact could be peeled off.
JimW, HugoP,
Went in HAM2 to dress the cables that go from Stage-0 to Stage-1. The goal is to make sure they will not be rubbing.
HEPI will not be released before the next opening of the chamber. Hence, cables from stage 0 to the feedthrough were not dressed.
JimW, HugoP,
Locked HAM3-ISI so:
- RobertS can take samples to evaluate contamination
- SUS can remove first contact when ready
WP#3605, userapps svn r3464
I modified the h1iopseih23 model to reconnect the WD signal from SUS H2A. This permits MC1 and MC3 HAM2 OSEM signals to trip the DACKILL on SEIH23, along with PR2 and MC2 from HAM3. The MEDM screen was also changed accordingly.
All models on h1seih23 were stopped and restarted. ISI was burt restored to its safe.snaps (note, there seems to be problems with ISI HAM3's safe.snap). HPI models dont have safe.snaps and were restored to the backup made at the time of shutdown.
Yesterday, the Apollo finished wipe down, second vacuum, chamber FTIRs, and close-out inspection. Two doors were returned to the chamber, one torqued. This morning, the technical cleaning crew is doing first cleaning on the dome cleanroom. Once that is complete, the cleanroom will be moved over the dome and second cleaning will be done. The Apollo crew will move the dome spreader from the OSB to X-end and start torquing the remaining door bolts. After second cleaning, the dome will be cleaned. If time permits, we'll try for putting the dome on today.
Closed the O-ring valve and the gate valve @ the turbo overnight (closed at 19:45 local time), and I will restart pumping tomorrow morning.
Using the retro reflection from the surrogate PRM, we centered the IFO REFL beam on the first beam splitter (M14 in M1000313, 95% splitter) on HAM1 because there's no height adjustment for REFL path in HAM1.
The beam was centered (roughly) on the HR surface of the splitter, I didn't care to spread the decentering on HR and AR side due to an uncomfortable working position.
The beam dump was readjusted to receive the reflected beam off of M14.
The splitters and steering mirrors downstream was not aligned as there's no way I was able to see the beam with this tiny power.
Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 PM Dec. 12 to 6 PM Dec. 13. Also attached are plots of the modes to show when they were running/acquiring data.
Mark B. I was tweaking and testing Stuart's new script on PR2 and it seems to be running fine, so I'm letting it finish, and I'll keep an eye on it from home. It should turn off the measurement status indicator and reenable damping when it's done.
- Prax air delivery - Sno Valley to work on chillers - Forklift training at 1:00 PM - Cleaning of cleanrooms at XEnd - SEI in HAM 1 - Mark B to run transfer functions.
a noisy signal for the MX CP5 LN2 level was causing constant alarms in the control room. I reconfigued the system such that the alarm will be raised only when the system is in alarm for 60 seconds.
ve.alhConfig file changed, HVE-MX:CP5_LT300 has COUNTERFILTER of 60. HSV for this PV set from MINOR to NO_ALARM.
- Jodi, Cheryl Last Thursday (Dec 6) Jodi and I inspected the H1 input beamtube. Pictures attached show that we found white powdery stuff (HAM3 table, beam tube, MC2 cage), white fuzz (beamtube), part of a latex glove (baffle), fibers, and uniform particulate on the overhead nozzles (picture of gloved finger shows what came off with a swipe).
Regarding the last picture in the above collection: I took a look at the MC2 suspension today and see that this pile of particulate is metallic and is from the install arm brackets which mount at this location. We have not vacuumed this suspension since in-chamber, if ever.