This morning I turned on the CPSes at BSC2 to see if they all survived, and it looks like one didn't make it. The horizontal St1 sensor on corner 1 is reading 32k counts, which probably means a broken in-vacuum cable. I went out to the chamber and checked all of the in air connections,  which looked good. I then swapped the horizontal and vertical cables at the box to rule out the board, but the problem followed the probe. At this point it could be the in-air cable (they rarely fail), the feed-thru (seems unlikely), the in-vacuum connection (which can't be accessed right now, there's a hard cover on the chamber) and the probe. I'll try to swap the in-air cable later today, but the rest will have to wait until we can get back into the lower part of BSC2. We can still float the ISI and HEPI, but no post-flight transfer functions until this is resolved. I am a little surprised that this particular sensor broke, because the horizontal sensors are better protected than the verticals, and this corner had a better routing scheme than the other two.

This time without any IOCs running.

• The LVEA currently sits in laser hazard
• H0:PEM-LVEA_DUST_LOC1_STATUS went into alarm overnight.  The expert screen for that monitor reads "Calibrate failure"
• A number of PSL ENV channels are white in the alarm handler
• Yellow:  H1SEIH23, H1SUSB123, H1SUSB6, H!SUSQUADTST, ITMY OSEM6

Some flashing was seen on REFL, but without the MC servo, no locking. 

The IMC alignment did not survive the recent vent, swap of dummy mass from HAM2, and installation of PRM and PR3, and bellows removal from HAM3.   Changes to the PSL have changed the input pointing into the vacuum system.  HAM3, while in theory seems to be OK, has not been fully vetted at this point, and there are some changes in the way MC2 is hanging in it's cage.

Changes to HAM2 include:
- a rotation of ISI by 19um
- an elevation change of ISI by 30um
- a shift of HEPI by 4um East (so small, likely thermal)
- an elevation change 1-4um in HEPI (miniscule)

MC1
- length -9um
- pitch +549urad
- yaw  +307urad
- MC1 also had a side OSEM flag that was touching but is centered now

MC3
- length -42um
- pitch +199rad
- yaw  +95urad


HAM3
- bellows removed.

MC2
- length -11um
- pitch +89urad
- yaw  -12urad


PSL
- beam from PMC is a bit high on it's alignment iris, and significantly better centered after the room temperature was lowered by MichaelR, and the laser is again thermally stable.

- alignment shift on my second alignment iris on the leakage beam from the bottom periscope is now attributed to a mix of changes made to the pickoff beam splitter for that iris made while I was out with the flu, and the beam shift seen coming from the PMC.

- the current beam coming from the PSL doesn't hit either set of marks we used for our previous alignments.  The PSL beams marked on the wall have two locations marked - one in-air that we used to do the original alignment of the IMC, and one under-vacuum when the IMC was locking well.  The PSL beams are now splitting those marks.


While some of these change seem small, I have concerns that a stuck or damaged sensor could be relaying false information about the state of a system.  I believe it's possible that the tilt and rotation of the HAM2 table, when combined, is having a greater effect than just looking at the one set of sensors for each degree of freedom.

J. Kissel (D. Barker, J. Batch)

Since the CDS crew has the h1sush56 computer up and running, and I was already going through infrastructure sweeps today, I figured I'd close out by getting the user front-end models up and running for H1 SUS SRM, H1 SUS SR3, and H1 SUS OMC. After copying over the corresponding L1 simulink files from the userapps repo, changing L1 to H1, l1 to h1, and cleaning them up a little bit, it was straight forward to compile*. After the models were up, I followed the usual instructions to get the new infrastructure filled in, taking full advantage of the recently freshened up safe.snaps and filter files from the input arm suspensions. There's still a ways to go for the OMC because neither LLO or myself have put much effort into it yet, but we'll get there.


* There's still a small snafoo in that the second bit on the RT NET STAT word on H1 SUS SR3's GDS_TP screen is red, indicating (I believe), that SR3 is getting errors upon receiving the his optical lever signals from SRM over the PCIe Dolphin Network. Jim and I scratched out heads over this, and tried various combinations of fixing the IPC file, clearing out the IPC file (of the offending/new channels only), and recompiling, but to no avail. We'll leave it for tomorrow so Dave can take a look, but worse-comes-to-worst, we can just use Shared Memory which appears to be working. Naturally, it didn't help that I began compiling the models before I'd caught every instance of L1 to H1. (*).(*) But all of that's fixed now...

[Keita and Kiwamu]

Details are coming soon.

EY stays laser hazard tonight. Alignment of the red beam path will be performed tomorrow.

The LVEA was transitioned to laser hazard.
The h1ecatc1 Beckhoff computer crashed.
The end Y ISI was locked. End Y was transitioned to laser hazard. Keita and Kiwamu installed a new PZT mirror on ISCT-EY. Work was started on replacing a QPD.
Gerardo opened and closed gate valves to measure the out-gassing of the X arm.
The end Y cold cathode gauge, PT424 failed. Gerardo and Richard fixed it.
Hugh and Jim worked on ISI cabling for BSC2. Hugh surveyed the elevation of the optical table.
The clean rooms for BSC2 and HAM3 were combined to allow access to the HAM3 door. The forklift was craned over the Y arm beam tube.
School group on site
Dave compiled h1iopsush56 against RCG 2.6.2 and restarted it.
Light fixtures replacement in mechanical room.
Pcal equipment set up in NW corner of LVEA north bay.
Fluid was added to the HEPI lines.

Added h1sussrm, h1sussr3, and h1susomc models to master file, restarted daqd at 16:50 PST

Shots of the 3/6//2013 BSC 2 installation appear in ResourceSpace.

We cracked the main supply lines from the Pump Station array in the mech room and added several gallons of fluid to the system.  We did this with the pumps running but some air coming back apparently generated some cavitation and the system stopped.  We will start up again in the morning when the EE guy is around.

I toured the LVEA lines and found no leaks.  So again, the pumps are off, the only pressure is the head from the Mezzinine.

We dropped the Cabling from the ISI down into the chamber and plugged the CPS cabling to the in-chamber feedthrus.  These signals will allow ISI to balance etc the floating stages as well as confirm the health of the CPS which often suffer from rough handling.  This may have occurred with the C3 covers and other work during the Cartridge install yesterday.  The other sensor cabling was not connected to the feed thrus.  These need a little doctoring and dressing and we needed to limit our time inside.

Before exiting we shot elevation/level of the optical table with the optical level.

Nominal elevation of a BSC ISI Optical Table is +1661.7Gz; BSC2 has no global to local correction.  The Beam Splitter though is being set low by 2.9mm(percomm-DCoyne).  I don't know if IAS has any vertical adjustment to correct for from the Test Stand Alignment.

Attached is my survey logbook page.

The average elevation of the Optical Table is 1658.0mm with a 0.4mm range of readings.  This puts the Optical Table currently low by 0.8mm and out of spec for level by 2x.  Still not bad.  I also recorded the Dial Indicator readings so we can muck around with this if possible.

Randy and crew tried unsuccessfully to crane the cleanroom over the valve on the ion pump. After consultation with John, the cleanroom legs were raised 6 inches and the cleanroom move was tried again with success. HAM3 cleanroom was butted right up to the BSC2 cleanroom but at a slight offset to accommodate the power box and leg casters. HAM3 cleanroom curtains were adjusted to fill gaps: additional curtain work will be done in the morning. The cleanroom was powered up and turned on: FFU function will be checked in the morning. First cleaning was done and west door bolts were removed except for the usual four, which were loosened. The lower level garbing/staging cleanroom was moved to allow west door access. The forklift was craned over the beam tube so it can be used for door removal.

Hard cover was returned to BSC2 after Hugh's brief entry this morning.

Guido M, Joe G, Deepak K

The Mode Cleaner was aligned to the following offsets. It is still a little off on Pitch.

The Alignment Offsets are

MC1 -
            Pitch : -46 ct
            Yaw  : -3750 ct

X1 module yields an outgassing rate of 7.3 e-15 tl/s/cm^2. Warmer today and the sun is out - currently 54F.

The h1ecatc1 Beckhoff computer crashed again. Running with a limited number of channels does not appear to have helped.

One of the ENDY cold cathode gauges seems to have failed this morning. PT 424 (LN pump) has gone to zero and is showing RED. This will be investigated in the next few days. PT423 is only a few feet away and can be used instead.