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.

This morning all the dust monitors in the LVEA reported communication errors. After restarting the IOC failed to resolve the problem, I power cycled the Comtrol. Restarting the IOC again after this fixed the problem. The root of the problem is unclear.

Guido and I moved three optics in the IO sensing path, to make room for a possible shift in the PSL periscope.  Picture attached.

This afternoon, I finished cabling MC1 and MC3 - we had stalled yesterday due to 1) broken signals on one MC1 cable as alogged earlier and 2) missing helicoils in the shared quadrapuss cable.  I bypassed the nicely cabled broken SRS cable for MC1 M2/Middle and swapped in a new cable (D1000225 S1105175 180").  This restored the signals.  For lack of time, I left the old SRS cable still nicely routed in it's bundle through the ISI.  I'm hoping SEI will redress the cables, removing the old, lacing the new, at some later date in our HAM2 work this month - no urgency.  WIth the cable issues finalized, I suspended both MC1 and CM3 and removed all of their FirstContact coverings.  I enabled all watchdog and turned on the damping loops.  All seems well - no tripping, at least.  I left them damping when I closed the chamber, but UFl was still working across the table.  MC1 and MC3 are ready for flashing.

• Pitch: 55 µrad up (with no First Contact)
  • Target: 12.5 µrad up, ±160 µrad (with no First Contact)
• Yaw: 80 µrad CW
  • Target: 0.0 ±160 µrad

We will set the gap/parallelism between the ITMy and CPy first thing Monday morning.  This will require a brief switch to Laser Hazard for the parallelism measurement (or measurements, depending on whether or not adjustment is required).  We will also take a look at the CPy roll and adjust as required.  The shield was placed over the front face of the quad and the cover pulled down for the weekend; damping was left OFF for both chains.

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 AM to 6 PM Thursday, November 8, 2012. Also included are plots of the modes to show when dust monitor 15 in the LVEA was turned off.

Kyle, Gerardo 
Moved BSC1 purge air connection from dome to chamber to facilitate dome removal.  

Kyle 
Removed 4.5" CFF electrical feed-through from HAM6 D5-3 and preserved Class A for TBD re-installation.  Installed 4.5"-2.75" zero-length reducer and 1.5" all-metal angle valve (for future HAM6 purge) at D5-3.  

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.

For Robert and Keita I have reconfigured H2 DAQ to serve EY data which is archived on the frame writers disks. The ini files were set to acquire=0 before being put back into the h2dc0 master file.

The following systems were restored to the DAQ:

H2SUSETMY, H2SUSTMSY, H2HPIETMY, H2ISIETMY, H2ISCEY

The H2DAQ frame is now 9.2MB per 32 second frame, this is all slow data.

Unfortunately, the course alignment of the ITMy (BSC1 cartridge test stand) was not done last week.  Today, we started the fine alignment and discovered the main chain was mechanically grounding on one of the F3 magnet replacement blocks.  This required that we adjust the entire table cloth to alleviate this, (and then all 12 BOSEMs to follow that - ugh)!  The chain then swung further forward causing a larger yaw error.  So, we're back to yaw and pitch alignment.  Fortunately, Doug just had a crash course on yaw alignment techniques and is slowly working at it (an iterative process).

This morning, Filiberto swapped the SUS/HAUX cables on the outside of the chamber to the correct feedthru port.  However, there are now funny looking signals on MC1 Middle (M2-UL) and MC1 Lower (M3-LL).  Reportedly, there was an external cable switch and the signal stayed with the channel exhonorating the external cable as the problem.  To be continued...

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