As Fabrice and Corey eluded to in the LSU SEI logs 1762,63, & 65, the H3 GS-13 was not right.  There was some statements that it was OK one week and then not the next.  I believe this initial observation was only in the Table-was-locked state.  Corey and Vincent may have mined some further data in that regard.  Regardless, the observation that it looked OK when the table was locked but not when unlocked made me think of the internal pod clamping hardware.  Never liked it and sure glad the BSC is different.  Anyway, I thought maybe the sensor had shifted a little bit in the Pod and the Mass was just seated and would see the un-damped world when locked.  But, when the table was unlocked, the stuck mass would have no 'power' in the low frequencies.  I'm sure it doesn't matter why I thought anything but...

So, we tilted the table such that the sensor would tilt down even lower, by adding a couple pounds, and observed no difference in the GS-13.  Then we shifted the weight to the other side so that the GS-13 would tilt up--same weight shift.  This time the time series looked good!  I think Corey took a spectrum to confirm.  We then swapped out that unit for the one spare Celine sent (thank you!) and it worked--without the tilting weight added of course.  I believe Fabrice is suggesting we do a similar tilt test to confirm we are in the center of the likely small 'level' range of the sensor.

JoeH has asked I send this unit back where he'll autopsy; so I can't offer any more info than that.

Reseated 10GbE card on h2daqfw1 (slot 5) which seems to have cleared up the bus timeout messages from dmesg.  That should be fixed, unless issues return.

I forgot to add in the previous report that disabling the option ROMs in the BIOS for all slots except 0 (the RAID controller), and removing the network cards from the boot list considerably improves the boot time.  Counting memory on startup is still slow, as is applying power for the first time (the iLOM controller must boot first in that case).  Will see if there is some setting for the iLOM that can get around this.

Have also finished installing the cards in the H1 DAQ x4270s, and installed Solaris 10 so they are also ready to go (minus user accounts, iLOM setup, etc.).  Did not see any glaring hardware issues.  These two machines are now re-boxed in the MSR.

This is simply a test of the add report page.  The author field is frozen now (mostly).

Just a quick reminder.  The logbook will be undergoing scheduled maintenance today from 10am-noon Pacific time.

If you have reports that will span that time gap, please save them as a draft or publish them before 10am.  You can finish them after noon (pacific).

 On Thursday July 1, I modified the DAQ .ini file located in '/opt/rtcds/geo/g1/chans/daq' named 'G1ISIHAM.ini'.  

This new file has added some needed channels to acquire data and write frame files on the test stand front end.  I re-loaded the DAQ and re-booted the framebuilder. The complete list of available DAQ channels that are currently writing frame files is attached. 

- We have completed the set of Local to Local measurements

- We have made a full of Modal to Modal measurements today

- The attached document shows the transfer functions and summarizes all the  parameters of data acquisition

- We start analyzing the results. At least two things catch attention and need to be checked: the resonance at 24Hz in the GS13, and the phase of the CPS at low frequencies.

- We are taking more data with a finer resolution and more averages.

- awgstream issues have been solved by the installation of the new version of awgtpman.

- about the get_data issue, Dave has created some spare space and installed the wiper script to prevent the disk from being full again.

- we run transfer functions this afternoon, everything went well. We have got a first complete set of transfer functions in the local basis. It is attached.

Few comments about these transfer functions:

- Low frequency data is noisy. We will increase the number of averages
- Transfer functions are going to be compared with HAM 6 measurements
- There is and undesired resonance at 24Hz


We are preparing a set of measurements in the general coordinate basis for tonight.

The /frames file system was 100% full, which means no new frames
were being written by the daq.

I have written a primitive script to just delete the oldest full frame
and second trend frame directories if /frames gets bigger than 95%.

The script runs as a cron job, as user controls on seiteststand


# Every hour run script to keep /frames from filling
# check /tmp/daq_wiper.log for its logs
0 * * * * /home/controls/crontabs/daq_wiper.pl

This would apply to all probes as in HAM, BSC etc.

We found the MicroSense did not report the standoffs and when asked were surprised it was not 2mm.  They do record them but don't list the number on the calibration sheet.  I'm asking for them all but to-date only have a few that they told me.  One was listed as 2.259mm (89mil) and four of the seven were greater than 2.16mm!  They will 'mess' with them if they are too far below the nominal and I don't know all the numbers yet.  This was a source of much of our confusion when we were jigging these in to get a noise spectra.  Eric ended up using 6 10mil shims on the test jig to get the outputs near zero.

Bottom line here is I wanted to post an email explanation given by MicroSense showing why our gaps are not exactly 2mm.  Sounds like we could specify that if we think it is needed but apparently we did not do so.

From Roy Mallory 1 July 2010:

Hi Hugh,

We calibrate to achieve a particular scale factor and to minimize
linearity error, but don't attempt to tweak the standoff.  The nominal
standoff is determined by design parameters, but a number of things, like
component tolerances, can cause it to be slightly different from unit to
unit.  It's also tricky to measure and define.  For example, is the
standoff the shortest line from the center of the probe to the target?  Is
it the distance between the point on the target and the point on the probe
that will first contact if the two are translated until they touch?  If
the probe and target aren't perfectly parallel, the standoff will be
affected, but is that the standoff to report?

What we do--mostly because it's simple--is to run the probe and target
together until they touch.  The target, which is the back side of a
mirror, is held to its mover by a light magnetic force.  The front side of
the mirror is monitored by an interferometer.  We note the
interferometer's reading with the mirror resting against the probe face,
and then move the mirror until the cap gage is at the center of its range,
noting the amount the interferometer reading has changed.

This method will be affected by parallelism, by any nonflatness in the
probe, and by any mote of dust on the probe or mirror.  Our gages do have
a front-panel zero control that allows the standoff to be adjusted,
however most of our customers want incremental accuracy and aren't overly
concerned about absolute standoff.  Does the LIGO application require some
particular accuracy in standoff?  If so, we can adjust the zero control at
the time of calibration to achieve your desired standoff.

Roy

1) Alex has installed the latest code last night to get the new version of awgtpman going. We hope this solves the drive issue we were having. I did several quick tests (1 mn long). Everything seemed to be working fine.

2) I have started longer measurements (6 loops of 12 mn each). And I have been having issues with get_data.

I have increased the number of attempts to 25. It helps but doesn't solve the issue. The run ends up to crash. I copied the error message below.


------------------------------------------------
WARNING: attempt #24 to get drive failed
  wait 3 sec and try again
Getting data from nds0:8088...
Data received!
 
WARNING: attempt #25 to get drive failed
  wait 3 sec and try again
 
ERROR: unable to get data for this drive segment after multiple tries!
  giving up
  the data FRD has the correct frequency vector, but
  The DATA and DATA QUALITY frds for this segment
  will all BE SET TO ZERO

Corey is still having issues with his name not being pre-populated in the author field of an entry.  This does not happen all the time. He reports that it happened again last night/this morning.  One of the details that he gives is that it happened with a browser tab that had been open to the alog for a long period of time.  This may be an issue of the Shibboleth session timing out.  This may be a bad interaction of lazy binding (which allows us to do anonymous read-only access) and the alog.

If this is the case it would explain corey's issue.  There are ways to mitigate this, by extending the session length for Shibboleth, or making the alog more Shibboleth aware.

I will test this on gold, the test alog server.  There I have the freedom to make the session timeout very small without interfering with others.

Tonight, I had hopes of starting one of Fabrice's transfer functions overnight.  Unfortunately, I was not able to because I was never able to clear the Watchdog.  As for what seemed to be causing the trips, for the most part, the H1&V1 Actuators would immediately rail to 32k.  This would cause two things:  an Actuator WD trip & an H1/V1 Geophone WD trip.  Additionally the Actuator would remain in RED in the "First Trig" state.  I tried various tricks with gains, and turning off input/outputs to no avail.  Looked at the rack and nothing was amiss.

Reboot of seiteststand
At this point, I performed a reboot of the frontend.  It was straightforward and there were no issues, but it didn't change the situation.

Matrices Re-filled
All of our filter bank paths are fairly simple (no filters engaged and gains of 1 all around).  Oddities I found were in some of the matrices.  In the CONT2ACT matrix there was a 1 in a place there wasn't supposed to be a 1 and one of the matrix elements had a sign different from what it should be as well (see attached image of cont2act matrix).  Because of this I decided I might as well run the scripts to fill the matrices.

One more note:  the DispAlign matrix was also empty.  So, I put 1's down the diagonal of this guy as well.

Matrix Set-Up Scripts
Jeff Kissel has some bash scripts which fill the HAM-ISI matrices (they are the ones used to fill the HAM6 ISI for both sites).  Since Dave copied over the epics bin area to the seiteststand, we were now able to run bash scripts (as well as use commands such as "caput" & "caget").  Nic helped me edit the scripts to make them work (among some location-dependent changes, commented out the --noprofile --norc values at the beginning of the script.  I ran the scripts for the following matrices:  Disp2Cen, Geo2Cen, & Cont2Act.

After all of this, I was still not able to clear the Watchdog (or run our measurement).  I've attached a snapshot of the Watchdog.  Notice the "First Trig" of the Actuators (and how the Actuator Monitors are all 0).  As soon as I click RESET, these monitors would show H1/V1 rail to 32k.  

cut-paste from David's email 03:07 30/6/2010

1) Threads, displayed as a tree format so that you can follow threads, with the 
tree organized either alphabetically or by date (and with filters for author, 
entry age, etc.), one could follow what has been written in a recent thread 
about the system they are working on and then add another entry to that thread. 
No need for users to type a matching keyword, since the "Add Entry To This 
Thread" does that automatically. One would like to be able to title a thread -- 
this could just be the first entry title, but it would be useful to be able to 
edit that to cover the thread content and to make it easier to search for

2) searching across the installations (certainly LLO and LHO) is needed. I think 
it would be neat to be able to search the Virgo Cascina installation as well -- 
that is a question of international politics, I suspect. We would need a 
pull-down list to know which one(s) were being searched, and would want to be 
able to identify several or all.

3) reduced Recent Author list for searches, and autocompletion on author names, 
ideally making reference to the recent author list to order options

4) can an individual's input and search settings be remembered for the next 
login from that individual? Hugh works on SEI at LHO -- would be a nice way to 
get things on the right foot. Could be a big thing software wise, but would 
reduce a lot of the effort in getting going.

5) notifications: ability to put in aliases here (maybe trivial, could be 
maintained elsewhere), but would allow subsystems and the team to be notified 
for certain entries

SNS has these 'features'; are there some we want to plan to integrate?

   1.

      BulletIntegrates with work orders -- if nothing else, having all work
      orders appear as logbook entries would be quite valuable, I think.

   2.

      BulletGroup notification, daily orders and required readings

   3.

      BulletUser bookmarked entries

Also, one can filter at the view page by ordered posting time, author, or 
priority, a nice feature.

Their initial data message entry keyword/category input looks like this.



I think something like this would be very good for us; sounds like a database 
dimensionality question, though, so to be resolved soon if so. Breaking things 
down into more columns seems attractive.

entry types: Progress (default), Problem, Repair, Maintenance, Status

Categories:
Safety (might want to impose notification to all recent authors, or all authors, 
or something for this entry?)
QA
SYS
IOO
PSL
SUS
SEI
COC
AOS
ISC
DAQ
DCS
FMP
INS

Location: L1, H1, H2, LHO, LLO, MIT, CIT, Other

Priority: Urgent, high, normal (default)