No hydrogen pump on X1 overnight

crossbeams installed on the mechanical test stand in the West bay

scheduled to move BSC6 into Y end VEA

The dust monitor in the bake oven room and at location 9 in the LVEA were replaced with a spare and the one in the control room. They both have calibration errors.

The tidal feed-forward servo is now running on both of the End Station BSC chambers.  A new prediction file was generated and the actuators reset to read the new file.  The PSL Reference Cavity feed-forward was also reset.  Attached is a 3-hr plot of the actuator output and the temperature drive to the Reference Cavity.  The jump in actuator output is when the servos were reset.  There is approximately 42 days of data left.  

Y-mid 1.4e-7 torr at turbo inlet as of 1700 hrs local.  X-mid now on turbo (took 5 hours to rough down)

The crossbeam has been mounted in place between the South end HEPI assemblies. Unfortunately the layout of the weldment and the frame is preventing some of the bolts from being torqued down. The bottle jacks and the work table will remain in place until some way of torquing the bolts down can be figured out. Once this problem is solved things should move fairly quickly for finishing out the HAM. 

Opened GV7 as it was soft closed earlier in the day for craning operations.

This is the second shipment from GNB.

More photos here in the public collection "lho end station spool delivery" - https://ligoimages.mit.edu/?r=6580

installation of mechanical test stand supports in LVEA West Bay
LVEA transitioned to laser safe for box cleaning test and welding of HEPI tubing from mezzanine to BSC8
running turbo pump on X mid and Y mid
cleaning of top of vacuum tube in LVEA
work on supplying electrical service to new H2 electronics building
installation of air pressure gauge between plenum and LVEA

I conducted the relevant section of the ECD block testing again.

Began pumping Y-mid on MTP.  X-mid BSC dome bolts not torqued -> will ask Apollo to torque dome bolts at X-mid

Dani, Filiberto, Grant, Keita, Patrick

The particle counts in the LVEA were unusually high today, including at ISCT4, where they should be zero. We went out to investigate ISCT4 and found that the HEPA filters were not running due to an undetermined electrical fault at the outlet. The power strip has been connected to another socket for the time being, and the counts have returned to zero. The .5 micron counts in ISCT4 are recorded in channel H0:PEM-LVEA_DST1_5 on the attached plot.

BSC6 moved from mid Y to end Y
Drilling holes for mechanical test stand installation in West bay
HEPI installation work
Delivery of laser partition wall
Delivery of vacuum parts
Fire alarm panel in computer users room has a fault

HAM 7 has the HEPI frames as well as the weldments in place and ready for the crossbeam.  The jacks holding up the support tubes had to be relocated to give clearance to the clamps as well as allowing an extension piece to be attached to the end of the support tube.  To do this two jacks and the top clamp were used to cradle the support tube while the extension was attached and the jack relocated.  The crossbeam is rigged with a spreader bar and should be ready to install shortly. 

After lunch the chamber will move into the end station. No excitement at any time - this is good.

H1 DAQ H1ADCU_EX was reconfigured. We have replaced H1:SEI-ETMX_FINE2 with the new low frequency InfraSound Microphone channel H0:PEM-EX_IS_MIC. Acquisition rate remains at 256Hz.

Yesterday we completed some preliminary TF testing and ECD Damping tests on QUAD 2 (BSC 8 ITM). Attached plots include a comparison of: the previous build (Jan 2011), the Quad Model, no ECD blocks, ECD blocks reversed for minimal influence, and ECD blocks positioned approximately half-way over magnets. The plots are unscaled and have a couple of the model DOF mixed up. Note: The Watch Dog tripped during Pitch high frequency testing (without ECD blocks) preventing any drive signal being sent during the Yaw TF (without the ECD blocks). Yaw without ECD blocks is an un-driven response only. Once again, this is part of the preliminary testing and so this is not a concern because these tests were part of the process for building the new scripts, which will require several iterations before we are ready for final metal build testing.

(Corey, Eric, Jeff, Jim)

BSCISI #2

• Test Stand was leveled
• Bottom-facing Stage0 was helicoiled, dowel pins installed, and it was moved on to Test Stand.
• Top-facing Stage0 was put on granite table, and helicoiling/dowel pinning has started on it.

Jodi and Co. worked further cleaning box tests.
LVEA went to laser hazard this morning, there to remain for some months, with occasional interludes.
Dave reset the DAQ a few times and finally removed h1awg entirely. The DAQ resets have caused false alarms in the cryopumps, but should resolve themselves later tonight.
Keita and Co. are still attempting to recover the mode cleaner.

The old iligo wiki machine continues to freeze roughly once a week. So I swapped out the computer with the spare X2100 machine.