Added memory to the h1broadcast0 computer to avoid memory swapping.  Fixed error in configuration file for monit, then started the daqd process to start broadcasting to the DMT computers.  

As part of WP#3559 I changed the h1iopsusquadtst model to add a user switch to disable the watchdog. I also renamed B478 and ITMY to QUADTST in this model.

I then stopped the QUADTST user model and the phone promptly rang in the control room, it was Doug, who was using h1susquadtst to check out the ITMY suspension attached to the test stand, oops.

After a get together with Mike, Mark, Doug and Dave we figured out where the confusion was. We have stopped the IOP upgrade work for now so Doug can complete his work this afternoon.

We restarted H1DAQ to investigate "invisible" disconnected slow channels which the EDCU could not list by name. Restarting the DAQ caused h1sush2a (MC1,MC3) to go into a bad loop, constantly printing an error messge to the console. It was not ping'able or ssh'able. The error message was

nf_conntrack: table full, dropping packet

...ad infinitum

This is the network filter connection tracking system. We presume that the DAQ restart did something bad at the mx_stream FEDAQ network port on this machine. We had to power cycle to recover h1sush2a. Unfortunately h1sush2a also took down all MSR Dolphin machines, and all mx_streamers needed a restart.

At the end of this bootfest, the H1DAQ EDCU was now connected to all channels, so we could not reproduce the "invisible" disconnected channel issue. Patrick did some dataviewer tests for slow channels and did see some inconsistencies in minute trend data.

The IOChassis for H1 LSC and ASC were connected to the front ends and their timing was connected. We powered up h1asc0 first, and as expected it killed all user models on Dolphin connected computers and timing glitched their IOPs (a standard Dolphin glitch). Before we powered up h1lsc0 for the first time, we tried to disconnect its node from the dolphin fabric, but when it started we again dolphin glitched the MSR.

At the end of this bootfest, I copied the IOP models from L1 to run as h1ioplsc0 and h1iopasc0. There is an IRIG-B timing error on h1lsc0 which will look at later.

Yesterday I visited END Y and noticed that the BSC6 annulus ion pump was maxed out (red led). Also we have noticed that the pressure in the main volume has been cycling due to main ion pump voltage switching.

So, this morning Gerado and I reconnected the AUX turbo cart to the BSC 6 annulus and began pumping again. It appears the annulus had drifted up to ~1 torr. We do not know when the annulus ion pump railed - it may have been

due to a power interruption. This ion pump is not yet trended in the CDS but it looks like cabling is mostly complete. Gerardo is going to look into this.

To correct the cycling pressure in the main volume we programmed the main ion pump power supply to operate in "Fixed Voltage" mode at 5KV.

Mark B.

Trying Stuart's TF script adapted for undamped and damped M0 and R0 TFs on ITMy (QUADTST), from 11:25 pm.

(Doug and Jason)
We had to realign the CP to the ITMy, reset CP OSEMs and OSEM centering.
WE set the ITMy gap between the CP S1 and the ITM S2 to ~20.04mm gap (20mm+/- 0.25mm requirement)and pitch parallelism is less than the 1.4mrad spec, yaw is out by 3min. We will tweak the CP yaw in the AM to correct.
Then we will need new TF.

Jonathan Hanks replaced the memory cards in the fiber pulling machine control computer as it would not boot up (parity error). The alignment X&Y translation stages that align the fiber mounting blocks is in need of some work as they are not rigidly mounted allowing the fiber to move too much during the pulling and making the laser beam alignment more difficult. LLO needs to replace fibers that broke in transit last week. I will continue with this in the am as well. 

- JoeG, ChrisM, Luke, Alberto, Cheryl

Today we installed the aLigo H1 spacers under the PSL periscope.  This raised it about 1".  

The real upper periscope mirror, glued to a PZT, is now installed.  

The red eye-safe laser pointer is still attached to the periscope, and was used to look at the beam as it traveled from the PSL table to HAM2.

The beam is making it from the PSL to HAM2.  The periscope was moved to compensate for the misalignment of the beam on the viewport aperture, and is now about 1/2 an inch from the tube at the top of the periscope mirror.  Tomorrow we'll discuss other possible options for splitting the difference in misalignment.

I cleaned and reinstalled the EOM into the IO path.  It's as close as possible back to it's original alignment, based on landmarks I left for myself, and will need to be aligned tomorrow when we get a beam back.

picture 1) IO_MB_M2 optics boxes - old 1" optic and new 2" optic.

picture 2) EOM reinstalled - ALS FI had to move and lost a needed beam dump.  I just talked to Keita, and the proposed solution is to move the ALS path 1" toward the reference cavity.  Will discuss at tomorrow's meeting.

I have spent the past three days revisiting the contro room EPICS alarm handlers with the aim of making them more usable by reducing the occurance of false alarms.

I will document the changes in the CDS wiki and give operator training. 

Alarms which may or may not be valid depending upon the commissioning status can now be disabled via a new alarm manager MEDM screen (H1CDS_ALARM_MANAGER can be launched from the SITEMAP).

To prevent alarms from being disabled and forgotten about, at 8am every weekday morning a script will run which will re-enable all alarms. At that time the operator will be able to reconfigure the alarm handlers for that day's operation. When the operator is not on shift (evenings, weekends, holidays), we can mute the alarm machine's speaker if desired so as not to disturb other users in the control room. In silent mode the alarm handlers will continue to log alarms. The 8am script will also restore the speaker to the nominal volume.

WP#3554

The h1iopsush2a model was changed to allow both MC1 and MC3 to trip the local DACKILL. MEDM changes were also made to show the new configuration.

The Ham23 SEISMIC front end can only be killed by the HAM3 suspensions (MC2, PR2) and not by HAM2 suspensions (MC1,MC3).

This WP is now completed.

4th and final HAM1/HAM2 septum viewport can now be installed

Unifirst with floor mats
Rick, Luke, Chris, Cheryl, Michael R., move H1 PSL periscope
Michael R., turn off PSL laser to allow Robert to test chiller
Kate and Margot taking pictures of HAM2 and HAM3 SUS components
H2 DAQ restarts
Ken to replace motor for end Y chilled water pump
Apollo installing adapters and viewports on HAM2 top middle and north ports
CDS subversion moved over to version 1.6
Magnitude 6.4 earthquake in the Gulf of Alaska at 20:42:15 UTC visible with seismometers
Fire department working on system, set off alarm in OSB Computer Users Room

Mark B.

I used DTT to take a set of undamped TFs for M0 and R0 of ITMy (connected up as QUADTST). Screenshots are attached. The graphs look pretty clean.

P.S. Stuart has sent me a set of scripts that has worked recently at LLO but it needed adaptation and I wanted a quick result. I'll try it out this evening, after Jason is done.

The door was removed from the chamber and a garbing/staging cleanroom was designated for lower level use.

HughR, MitchR, JimW

Today Team SEI pushed through most of the worst of the seismic optical table payload, but we ran into a couple of known issues. LLO found that these mass stacks somewhat interfere with the BS struts. But where Livingston only had to shift a few 1kg parts around, it looks like we have to move a 5kg mass. In the attached, somewhat cryptic, picture, the mass stack directly under the strut, and closest to the camera, is missing the interfering 5kg mass. We plan on shifting this mass to a neighboring stack, but that does mean the stacks will not be as uniform as on previous units.

Mark B.

Set MC3 to undamped at 08:55 for a 20 minute spectrum series. (We already have a nice damped interval from last night).

I recently made a new set of isolation filters level 2 for HAM3-ISI. 

1- I tried them with the new Step_8_Performance_Analysis commissioning script. Spectra are attached*. The blend filters used are the new 250mHz blend filters **. There are some discrepancies between the expected isolation and the measurement. This is especially noticeable along Z. I am not sure why yet.

2 - I also tried the same configuration with the new 100mHz blend** engaged on X and Y. I compared the spectra measured then, with the ones measured earlier this week. Isolation loops show good performance. There is some amplification of motion between 10Hz and 50Hz. This is mainly noticeable along X.

* .pdf created with a new matlab script. I am still perfecting. I should be able to add it to Step_8 soon.
** svn revision 6187