For 20 minutes (from Sep/14/2012 23:56-ish to Sep/15/2012 00:14:15 UTC), one arm was locked with WFS, without excitation/ring-heater, with PSL, before Aidan started injection.

PSL HEPAs, make up air, and ACs were all fully ON.

Anyway, while talking to Aidan I noticed that it was not as glitchy as the day before, and close to the end of the above mentioned period there was a few glitch-free time long enough to capture 8 averages BW=0.094Hz spectrum with dtt, that's whopping 72 seconds of glitch free time per each spectrum!

OK, nothing to be excited about, they (red and blue) look mostly the same as the best-ish data with refcav in the optics lab (green). PSL might be slightly (e.g. 2 dB) better between 1 and 2 Hz.

A cavity scan in running overnight on the single arm with 13.2W of power going into ETMY from the RH.

The RH was turned on around 17:45 PDT. I've turned off the WFS servos and have a dither script running intermittently to take care of the alignment.

The Apollo crew spent the day cleaning the upper chamber, using ONE air drill. They also confirmed the circularity measurements near the turbo pump port taken for AOS. 

IAS,
 Test stand 1 has the modified leg installed. Both test stand are now leveled to the same elevation as measured from the support tube bosses. All 8 corners measured to < 0.1mm using the Sokia autolevel and interpeted as close as the precision scale(rule) could be measured.

ScottL & Hugh
We added the additional counterweight to the WHAM3's East Side per D1000907.  The table now has 15 stacks, 20kg each for 300kg.  Of course the ISI is locked (as is HEPI) and will remain so until remaining Aux/IO (sorry if I have subsystems smeared) items are added to get to final payload.  Then we'll be able to unlock and fine tune the final actual payload.
I had to adjust the position of the two SUS brackets in the mid-right of the photo to make room for the mass on the Northeast corner.  Further, there was an unused bracket North of PR2 that I moved to the South of PR2--unused in that it was connected to the SEI cabling going from the Optical Table down to the feedthru but connected to nothing on the Optical Table.

See the below photo for a view of the East side.

   Filiberto, Andres, and Jeff reconnected the cables to the feedthrough Kyle repaired. MC2 has been reconnected to the test stand and connections were verified. Andres and Jeff made minor centering adjustments to the OSEMs. 

   MC2 is again ready for testing.      

I started up the dust monitor code for the end stations and the OSB optics labs. I also burtrestored the alarm settings. This was needed after h0epics2 got restarted. Someone had already restarted the code for the dust monitors in the LVEA but the alarm settings needed to be burtrestored.

The CDS main file server cdsfs0 glitched this morning at 04:05 and put itself into readonly mode. This is the second time this has happened this week after many months since the last occurance. The other failure this week was at  16:20 Monday 10th.

The two failures are different, Monday locked the computer up completely, today we were able to log in and look at the logs. We cleanly powered it down and Jim performed the power cycle. Everything came back up and the control workstations should be operational.

here are the logs for the two events:

Sep 10 16:20:49 cdsfs0 kernel: [1167428.800898] 3w-9xxx: scsi0: ERROR: (0x06:0x0036): Response queue (large) empty failed during reset sequence.

Sep 14 04:05:36 cdsfs0 kernel: [299840.564536] 3w-9xxx: scsi0: ERROR: (0x06:0x0010): Microcontroller Error: clearing.

We expect remote transfer functions on MC2 over the weekend.

Ridiculous ergonomics pertaining to the center-north flange that was R&Rd significantly limited my ability to do a decent job on the chamber flange (predict 50/50 chance of having to revisit this "leaker").  After several hours of fighting the numerous obstacles, I finally unbolted the dial-indicator "trees" that monitor the support tube motions.  Sorry Seismic.  Unfortunately, this was mostly after the fact.  

We have taken the Phase 1b transfer functions and power spectra for H1-PRM. 
The files from 09/06 are for undamped Transfer functions.
The files from 09/10 are for damped Transfer functions. 
The files from 09/13 are for the damped and undamped power spectra. 

Ken worked at getting an appropriate power supply for the compressor first thing this morning.(Thanks, Richard.) The Apollo crew went into the beamtube to vacuum up all the mess (visible particulate, fibers, metal fines)from the gate valve to the BSC body. Once that task was accomplished,the dust barrier was installed and brushing commenced. About 70% of the collar was brushed by the end of the day.

Scott & Hugh

The first layer of D0901075 mass was positioned (9 pieces on the west, north & south sides) and bolted down sometime ago per D1000907-v1.  I didn't add the second layer so as to improve the access for cable routing and other work.  The six stacks (12 pieces-120kg) have not been added to the east side of the ISI table.
Today we put the second layer, another 90kg, on to the first layer of positioned stacks. These are secured with final fasteners.
See the attached photo for a view from the west.

With the go ahead, I'd like to get the rest of the payload in position asap but only if it won't interfere with Aux/IO work.

fire alarm testing in morning ~9:40 - three times for good measure!
contractor on-site for Richard M
fire dept at 1:15
Rodney at Mid-Y ~10:30.  later to End-Y ~1:00 with the use of both roll-up doors
Eric A. at End-Y ~3:00
Ops tutorial led by Dave B. ~2:00

[Jax, Aidan, Thomas]

I've run an initial analysis on the cavity scan data from last night. The setup was as follows.

1. Cavity scans were run every 90s or so. We scanned over the range [36,56] kHz every 20Hz. The amplitude and phase response of the injected frequencies were averaged over 1000 oscillations.

2. After 10 minutes of cavity scanning, we started the ETM RH at 3.255W per segment (or a requested power of 315mA)

3. The cavity scans were left running for 15 hours or so before we switched off the RH.

4. The frequency of the LG10 mode was determined for each cavity scan. The attached plot shows the frequency shift of this mode vs time. The LG10 mode shifts by 2x the HOM spacing.

Notes

(a) the WFS feedback coupled with the thermal lensing started to drive the cavity away from resonance after ~2hrs of heating. We lost lock and spent about an hour trying to recover. Hence there is no data shown from [t=2hr to t=3hr];

(b) I've also plotted the COMSOL estimate of the frequency shift for 6.5W of heating. The model predicts a frequency shift ~90% of the size of what we measured.

(c) For reference, change in the ROC is ~76m/kHz * the change in frequency of the LG10 mode (or delta ROC = 151m/kHz * the change in the HOM spacing). 

h0epics2 ground to a halt yesterday with 0% cpu idle time. I restarted it and as of now it is still nicely at 98% idle.

The FMCS PC was reconfigured yesterday presumably by the vendor, its network firewall was strengthened which prevented the FMCS EPICS IOC (h0epics2) from accessing the PCs web pages.

I reconfigured the WIN7 inbound rules to allow access to the HTTP port on the FMCS PC and restored the EPICS connection.

Ring heaters didn't turn off as intended. Instead they were turned off at about 9 am and I continued the cavity scan until noon to watch the ETM cool down. The CMA excitation B is now off.

WP3443

Late entry for change made Tues 09:29 local time. The IOP model h1iopsush2a was changed to switch the watchdog trigger from PR3 to MC1. Since MC1 top OSEM is correctly centered, this allows the IOP DACKILL to be disabled, permitting chamber side testing of MC1.

SVN: h1iopsush2a.mdl version r3009.

   Disconnected the SRS cables and in air cables on the suspension feedthrough in Ham-3 so Kyle can fix a leak. Sus will reconnect the cables when the feedthrough has been reinstalled.