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.

• 6.3mag earthquake in Baja Calif at 2:36am
• Optical Levers:  (Robert, Thomas) Another calibration measurement (cover removed from viewport)
• Cheryl/IO checking ifo beam alignment on beam dump at HAM2
• Ski swapping prefilters for OSB area (including Optics Lab, Bake Oven Room---Cleanrooms/flow benches will be functioning, but will monitor dust monitors).  This took about 10min. 
• Surprise expressed at ITMy whose Sattelite Box was powered off last night (this was Robert last night for field tests).  Satelite box powered back up and ITMy damped.
• HAM2 SUS Watchdogs reconnected to SEI HAM2 &3.
• Michael & Oliver turned off the laser to do work on the water distribution system
• Ski may cause FMCS alarms at mid-stations

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.

Today I turned the H2 fw0 system off. I used this system to test the reorganization of the raw minute trend files from one large directory to 256 directories depending upon the CRC8 check sum of the channel's name.

We are preparing H2DAQ for its move to the DTS system.

Mostly for myself (and to keep track in the event some push out to a subsequent vent), the following are items SUS still needs to do in HAM2/3 before the chamber is officially checked off the install list.

To be done in the next day:

Tweek lower stage AOSEMs to 50% OLV

Swap PFA EQ stop tips with fluorel/glass tips

Install Vibration Absorbers

Lock all EQ nuts

Things we're pushing toafter the next vent in the new year:

Re-check heights of prisms to table surface

Perform B&K Hammer testing

Round of FC cleaning since duration of chamber-work exposure to MC1 and MC3 optical faces was many weeks (duplicating the LLO schedule)

Install PR3, PRM, and all associated install and testing steps, etc.  Balance of install/alignment procedure...

JimW, HugoP,

We continued payloading HAM2-ISI yesterday (12/11) morning to account for the absence of PRM. We put 166lbs of mass around PRM's future position. to do so we used:
- 2x50lbs
- 3x10kg 

The attached picture shows the layout we picked for the masses. It also shows the mass stack used to account for PR3's absence.

We noticed sharp peaks on the ASDs measured with the GS13s of HAM3-ISI, since December 11th. The frequencies these peaks were observed were 3.5Hz, and 11Hz (see atachement).

Frequencies, and timing, correspond to Robert's injections for BSC1 magneting coupling tests. One of the coils used for this tests sits right next to HAM3 chamber. It is probably the one that causes the most coupling.

Robert's injections are 5 orders of magnitude above regular ambient magnetic field. The magnetic pickup seen on the GS13s of HAM3-ISI is no more that 2.5 orders of magnitude above seismic level. We are thus fairly confident that GS13s will not be impacted by the usual ambient magnetic field.

With the exception of 1/4 of the floor, wipe down was completed prior to Laser Safety Training at 2 pm yesterday.

Closed the O-ring valve and the gate valve @ the turbo overnight (closed at 16:15 local time), and I will restart pumping tomorrow morning.