We have completed assembly of the first Beam Splitter Lower Structure. No fit, machining, or alignment issues were noted. The main Lower Structure drawing (D080005) calls for eight 1/4-20x0.5 SHCS. However, the EQ Stop Plate (D080008) and the LS-US Bracket (D080011), both require 1/4-20x.05 SHCS and therefore 16 of the 0.5” bolts are required.

Over the past two weeks we have repurposed the three X2200 units
for aligo auxillary system prototyping. From top to bottom the
X2200 are being used for:

top: 10.11.0.70, Cyrus network management tests
middle: 10.11.0.72, Patrick aconlog prototype
bottom: 10.11.0.71, Cyrus second net mgt machine

This morning I noticed some extra testpoints on the GDS Overview medm on the Test Stand even though I was not running measurements or had dataviewer open. I ran Dave B.'s 'system_check' script that checks to see if the processes are running correctly.  There were several errors with processes not running and so I decided to reboot the front end.  Afterwards, the test points cleared and the system_check came up clean.  The workstation linux machine was also running really slowly, so that machine was rebooted as well.

We have completed the assembly of the five Beam Splitter Top Stage cartridges, which are undergoing the 100-hour creak bake.  

Assembly Notes:
 
(1). We made the assembly jig out of four sections of aluminum box. For assembly, the end of the Base Plate is secured to the box sections via 1/4-20 SHCS into tapped holes. For blade pull down, the two end sections, bolted to the Base Plate, are dog clamped to the optics table. The remaining two box sections are slid under the Base Plate near the edge of the optics table to support the front half of the assembly. (See photos Assembly Jig and Clamp Down). 
     
(2). When installing Helicoils into the Blade Clamp Bottom ensure the two outer ones are run down to the bottom (the curved side) of the clamp. If not the 1/4-20x 1” mounting bolts will not engage the Helicoil.

(3). The Rotational Bushing can be a tight or loose fit in the Bottom Plate or Blade Clamp Base. If you have to tap or press to set the bushing, install a 1/4-20 SHCS into the bushing and push on the head of the SHCS. Tapping or pressing directly on the phosphors bronze will distort the bushing making it difficult to insert into the other part.
 
(4). If the mounting SHCS for the adjuster assembly do not line up with the slots cut into the Base Plate, loosen the 8-32 SHCS holding the two halves together to allow some free play. Once all five SHCS have been installed, the 8-32s can be tightened back down. This may cause some binding when trying to rotate the adjuster. 

(5). Use 20kg for the blade pull down weight. The assembly book calls for 50kg, which is too much.  

The General Standards ADC adapter board was replaced today after some investigations by Richard, Hugh, Dave B. and others regarding the flat-lined channels seen this morning by Corey.  The previous General Standards ADC board had a Serial #080421-35.  The replacement board (same model) installed today has a Serial #091102-16.  The channels have been confirmed to be reading and outputting data through dataviewer. 

the SATABOY finally finished its RAID6 build at 15:00.
Dan noticed that the spare 2TB SATA drive was configured
as a global spare for the 64GB SSD drives as well! So 
we removed it from the global spare pool and added it to
the SATA RAID pool only.

I connected the Sun X4270 (frame writer) fibre channel
cards to the sataboy controllers. There are two FC cards
in the Sun and two controllers, so the connection is:

sun pci-e slot1 to controller 0 (left connector)
sun pci-e slot4 to controller 1 (left connector)

I've handed the system over the DCS for QFS install.

Dave, Greg, Dan

Last night, I was getting ready to run a measurement for Vincent, but before running I happened to check channels and noticed some channels were zero at their inputs.  I went to do a quick check of cable connections, and they looked connected at the Feedthru Interface.  Not knowing what else to try, I killed/rebooted/started the isi system:  everything came back including the zeroed channels. 

I've not seen this issue before.  Any ideas on what's wrong (I'm attaching a snapshot of the sensors as they were on DV).  Now I only looked at these sensors, and nothing else, so not sure if other channels have zeroes at their inputs.

Sidenote:  I tried killing scripts from the "isiham GDS CUST" medm window from the workstation in the Tech Lab, but it didn't work.  The medm screen didn't go WHITE, and my mouse eventually became froze within an medm screen (I wasn't able to do anything on this machine...so I had to power it off via the power button).

The 2TB disk drives for the SataBoy raids were delivered
today. I installed the disks into the H2 DAQ system and
started a RAID6 install with one spare drive. Its looking
like the build will take about 40 hours.

The system has 14 disk slots, we have 12 2TB drives and 2
SSD 64GB drives. The SSDs are configured as a mirror raid
of size 64GB.

The 12 2TB drives are mounted as a RAID6 (9+2) plus a single
hot spare. This will give an 18TB disk system when it is built.

Looking at the epics records, it appears the new system only adds
new records and does not change/delete any existing records. This
means burt restores of old backups will still work.

A new autoBurt.req was generated, so from now onwards the new channels
will also be backed up.

The old system had 1780 chans, the new has 3245 chans (addition of 1465 chans)

The new system as added the following filter modules:

< L1:QTS-Q1_M0_PITCH_TEST_GAIN
< L1:QTS-Q1_M0_ROLL_TEST_GAIN
< L1:QTS-Q1_M0_X_TEST_GAIN
< L1:QTS-Q1_M0_YAW_TEST_GAIN
< L1:QTS-Q1_M0_Y_TEST_GAIN
< L1:QTS-Q1_M0_Z_TEST_GAIN
< L1:QTS-Q1_R0_PITCH_TEST_GAIN
< L1:QTS-Q1_R0_ROLL_TEST_GAIN
< L1:QTS-Q1_R0_X_TEST_GAIN
< L1:QTS-Q1_R0_YAW_TEST_GAIN
< L1:QTS-Q1_R0_Y_TEST_GAIN
< L1:QTS-Q1_R0_Z_TEST_GAIN

which accounts for most of the new channels.

Mark requested that I get the latest qts.mdl file from the LLO
quad test stand and compile it at LHO. I saved the current 
file as archive/qts.mdl.3nov2008 (this is the date it was created)
and copied the LLO file as qts.mdl (this file was created 4oct2009).

I did the standard make qts, make install-qts, make install-daq-qts
and make install-screens-qts with no problems.

I then copied the medm files up from LLO. So everything in
/cvs/cds/llo/medm/l1/qts is a copy (orig saved as l1/qts_lho)

The new overview screen is working, and the DOF buttons open sub-screens
(see attached image)

This time with filtering off.  There appears to be some stiffness in the cabling which is likely causing the PITCH and Z Tf's to be a little funky looking.

I have attached a sum up of the isolation filters installation on HAM-ISI-LHO-Unit2.

Andres R. and I completed assembly of the first two Beam Splitter Upper Table Cloth subassemblies this afternoon. No manufacturing or design problems were encountered, (all parts fit together and all holes were of the correct size and in the right place). 

Assembly Notes: 
(1). The ECD Blocks are still a bit tight fitting in the mounting bracket. Alcohol and rocking the ECD Block helps it slide into place. When adjusting with the jacking screws, take care to keep the ECD block parallel to the face of the mounting bracket or it will jam. 
(2). Adjust the side plates to their full width to allow the installation of the Top Mass into the Table Cloth assembly. 
(3). Run the four bottom 1/4-20 Helicoils used to fasten the front and back plates to the side plates in from the bottom of the side plate to their full depth. The 1/4-20x1 SHCS used to bolt the plates together will not reach the Helicoil, if they are not installed to full depth.            

On Friday 20 Aug we started an N2 purge of the Transport container in which resides the HAM ISI assembly #1.  The N2 flowed at ~30 l/min for about 6hours.  We dropped the flow to a few l/min for the weekend and then ramped it back to about 10 l/min for the remainder of the week.  Attached is the trend of the temp/dew point/humidity of the exhaust.  Purge was stopped Friday afternoon 27 August.

I will be updating the aLog today at 10:30am Pacific.

Please save your entries to drafts or post them before this time.

The updates will allow the following:

 * Tighter integration of the aLOG and the LIGO.ORG authentication method. This is a permanent fix to the problem where the author name would disappear.  Your sessions will time out eventually.  Work in progress will be saved to a draft, so you will not loose any data.

 * The thumbnails will display with the correct aspect ratio

 * Preliminary support is included to allow a user to edit their entry for 24hrs.