We completed the Quad 3 rough alignment for both chains. Set up the optical lever and started on the fine alignment. Found the Reaction chain yawed relative to the Main chain and the structure, and adjusted the Top Stage blade angles to remove the yaw. We will work on setting the pitch tomorrow.    

~9:45 fb0w was re-booted 

10:30 - Rodney to Squeezer area to flush out eyewash station

Hugh and others prepping for HEPI install

11:35 – Dave reports that fb0w is stable and rebooted the machine to begin writing frames again.

12:30 – truck for freight pick-up from Doug

Flushed all of the eye wash/shower stations in LVEA, LSB Optics lab and Warehouse

H1 DAQ system.

LDAS were down due to  cooling issue in their server room. While the disk system for fb0w's frames were not available, fb0w was ran in partial mode (real time data only). LDAS have recovered their disk system and fb0w is now writing frame files again.

The data gap on nds0 is

08:50 H-R-982947008-32.gwf
11:37 H-R-982957024-32.gwf

For data in this period, please use nds2.

RO unit shut down in auto from level control

The aLOG will be rebooted tomorrow after some routine system maintenance.

The reboot should happen at 10am Pacific time 1 Mar 2011.  Please save any entries you may be working on before that time.  The down time is expected to be a minute or two.

Started RO unit this morning at 06:45

The chiller was running Friday and Saturday morning for the Corner station.  We lost the chiller some time on Saturday, but the CWP remained running at 45 Hertz, but there was no display on the controller panel.  I've turned off that pump, manually restarted CWP2 and Chiller 2 started.  Once temps return to normal we will turn the heat back on.

Due to a loss of communications to the chiller yard we have no chilled water to serve the LVEA and OSB. Temperatures were starting to climb so I have de-energized two heater circuits for the LVEA.

• h2adcumy status was going from green to red on the overview screen, but we could still get data from PEM channels, so not too sure what was going on. A reboot fixed this.
• Filiberto running ethernet cable in LVEA for camera viewing
• Beam tube supports removed
• CP1 and CP2 have recovered to normal values

Thawed out CP1 and CP2 actuators am leaving shop lights on to keep them warm overnight

9:00 work begins cleaning and prepping for IO tube removal
9:00 – Jodi and crew beginning brush test and sampling in the test box by 

~1:00 - work resumes on the IO tube removal

~1:30pm - PAP tour comes to the control room
~2:30pm – tour group with Dale to the control room

~3:45pm – work completed on removal of IO tube.

Cyrus altered (slightly) the IPs of the EX access controllers and got the system working again.
Preparations were made for removal of the H2 IO beam tubes, including removal of the ion pump near HAM11.
Oscar's tumbleweed baler broke this morning, so it's out for repairs.

The satellite boxes for the quad test stand have jumpers to select different modes of operation. When using the test stand to do noise tests on AOSEMs it may be convenient to change the jumpers on channels that normally look at BOSEMs, so as to be able to test as large a batch as possible. For future reference the attached photo shows the correct settings for BOSEMs. For AOSEMs (as on the quad PEM stage) move the jumpers to the opposite positions.

Dave fixed a problem with the email alarms not getting sent to cell phones. The cron job on GC was not running.
Richard and Cyrus worked on resolving issues with the access control system losing communication to end X.
The electrician looked at End X, Mid X and LVEA circuits for Richard.

Unifirst Delivery 8:45
Paradise Water Delivery 9:20
Sprague 9:26
Tumbleweed bailing finished 2:13

The test of the vacuum pump degrouting will not take place until next week.

I deenergized IP7 and removed the HV connectors from the pump and disconnected the ground cable.  This pump is going to be removed soon to facilitate the 2K output mode cleaner tube removal/replacement.

Locations 1, 3, 5 and 8 got stuck holding. Dani restarted them for me at ~10:08 am.

On Friday, we finished up rebuilding the Solid Stack with modified parts which allow for more head-room while working.  We helicoiled, and fit the Upper Structure with Top Masses, Top wires, and the necessary Table cloth walls.  
Joe O'Dell (RAL in the UK), Travis, and I continued working on the QUAD3 build today (Sun).  Joe loaded the Upper Structure onto the Solid Stack while we re-made a few sets of wire assemblies.  Joe also reset the UIM blade tips to the new heights of 15mm (nominal was 12mm).  We are working towards making a few measurements of lateral blade tip deflection while Joe is here, so we are currently building the QUAD with the following configuration.  The Reaction Chain will likely need to be refit to match the Main Chain after measurements are analyzed.  The Main Chain matches LLO's Q13 Build, and what they are working towards on Q14.  

MAIN CHAIN
Top Mass Weight = 22kg
UIM Weight = 22 kg
Top Mass Blade Tip Heights = 9.7mm shims (nominal was 6.7mm)
UIM Blade Tip Heights = 15 mm (nominal was 12mm)
Middle Wire Length = 2.7mm shorter than nominal
Bottom Wire Length = 3mm shorter than nominal

REACTION CHAIN
Top Mass Weight = 22kg
UIM Weight = 22 kg
Top Mass Blade Tip Heights = nominal at 6.7mm)
UIM Blade Tip Heights = nominal at 12mm
Middle Wire Length = nominal per D060516
Bottom Wire Length = nominal per D060516