(Koji, Dan, Alexa)

We first centered the beam on SR2 by adjusting SR3. We looked into HAM4 using the analog camera and we centered the beam around the aperature in front of SR2:

(SR3 original position: P 500 Y -150)

BOTTOM: P 513 Y -100

TOP: P 428 Y -100

RIGHT: P 464 Y -138

LEFT: P 464 Y -98

FINAL SR3: P 464 Y -118

Next, we adjusted SR2 to center the beam onto SRM/FI via the analog camera looking into HAM5:

BOTTOM: P 4154 Y 1770

TOP: P 599 Y 1770

LEFT: P 2376 Y 3420

RIGHT: P 2376 Y -100

FINAL SR2: P 2376, Y 1660

To fine tune SR2, we examined the beam in HAM6 and found the positions when the beam disppeared:

Dark  in pitch:

P 2546, Y 1660

P 2006, Y 1660

Dark in Yaw:

P 2276, Y 2061

P 2276, Y 1482

FINAL SR2: P 2276, Y 1771

In this configuration we measured the power in HAM6 to be 2.6mW with ~1600mW at the PSL periscope PD.

[Dave Arnaud]

Since the test stand for testing the 3rd IFO quads will be needed soon, we took a look at the h1susquadtst model, and succeded a 'make' after making some modifications to the model : 

1. grounded two tests inputs/outputs of the quad common part (wouldn't compile with unwired inputs)
2. grounded the DACKILL_STAT_OUT bit which enables ISI watchdogs (no ISI wired up, so no need for it)
3. Modified the Binary Input/Output parts (copied from itmy) with the new CBI-CB0 parts + hwwd (wouldn't compile with the old parts)

When the test stand will be wired up / turned on, h1susquadtst model will simply need a make install (follow instructions here)

New model was commited to the svn under revision 8555

Work on the PSL FSS and locking the IMC for HAM6 work
Journal club talk by Prof. Paik

08:26 Ed updating AI chassis in H2 building
08:32 Filiberto to end Y to look at ESD power supplies
08:33 Tim to end X for B&K hammer measurements
08:53 Jason starting work on SR3 optical lever
08:58 Nathan starting unattended work in the optics lab
09:05 Karen to mid Y to clean
09:13 Jeff K. to end X with Tim to work on B&K hammer measurements
09:44 Kyle to end X to work on vacuum equipment
09:44 Manny checking for property tags at the end stations
09:45 Richard and Filiberto to end Y to work on ESD
10:47 Travis to test stand area to retrieve parts for the staging building
10:47 Richard and Filiberto back from end Y
11:00 Keita done transitioning the LVEA to laser HAZARD
12:08 Karen back from mid Y
12:13 Richard to end Y to reinstall Comtrol box
12:14 Robert and Paul to Y beam tube enclosure
12:35 Richard back from end Y
13:25 Jeff K. and Tim to end X
13:55 Kyle to end Y
15:04 Kyle back from end Y
15:50 Nathan done unattended work in the optics lab

(Entry by Kyle) 

John, Kyle, Daniel

Today we finished roughing and transferred to the turbos (YBM, XBM, Vertex) -> I valved-out and spun down the Vertex turbo @ 1530 hrs. local -> Currently, the turbos are being backed by the QDP80 roots pumps -> Tomorrow, I'll switch to backing with the nominal small scroll pumps (these had been loaned to the Y-end for Rai's ionization apparatus)

(Daniel, Koji, Alexa)

The FSS was not stable again. We turned off the ISS and that seemed to fix the problem. We are leaving the ISS off so that we can work on HAM6. It still remains to debug what is wrong with the ISS.

The weather station at MY had not been giving data so the comtroller was removed. See log 13433.  It turned out to be the power supply for the comtroller.  The unit has been replaced and the software restarted.  Had to remember to boot the weather station to get it reconnected to the comtroller. 

So, apparently, the loss of a management network link causes the SataBoy controllers to fail, as evidenced by three simultaneous alarms when I powered off the management switch in preparation to swap it out.  Yay.  I have silenced the alarms, and so far C1 on each array appears to be working.  Message on serial console was 'Controller C0 has a firmware fault', and status LED was still green until I booted the switch, at which point the status LED went red and the serial console message changed to 'RAID controller 0 failed'.  More details to follow.

Keita, Kiwamu, Patrick,

Richard noticed that the PSL kept flickering once a minute or so. Looking at the PSL screens, we found that the FSS was unable to find a 00-mode. This kept unlocking the PMC because of the large temperature scan by the FSS auto-locker.

We changed the temperature scanning range from [-0.1 : 0.1] to [-0.2: 0] K. Immediately a 00-mode was found slightly below -0.1 K. This is why the FSS was unable to find it. Now the FSS seems happy.

Also, Keita and Patrick took at look at trend of some PSL temperature sensors. There was a clear coherence between the NPRO locking point in its temperature and the PSL room temperature. According to a sensor, the room temperature dropped from 73 to 71.5 F over the past month.

Doug working on optical lever for SR3
HAM6 fine alignment waiting for vacuum
tiltmeter hardware installed, analyzing data
charging measurements moving to end X
B & K hammering at end X

Pressure still at 0.77 Torr. Roughing valves opened at 0730.

no restarts reported

Entry by Kyle

T. MacDonald, J. Kissel

Initial measurements of the H1EX piers and floor were taken on 8-15-14 to establish that the B&K system and accelerometers were functioning as expected. These were done with a B&K 4506 
accelerometer on each north edge of the top of north side piers, and another on the north side of the chamber about 5 ft from the top. The B&K 8340 accelerometer was centered under the beam tube 
and 1 ft north of the center line between the north piers. During these measurements, no features were found near 8 Hz.

There were some concerns about the coherence of the 4506 accelerometers at 8 Hz, which was generally below 0.5. The 8340 accelerometer coherence was much better, so on 8-16-15 it was mounted on the 
top of the northeast pier next to one of the 4506s. Measurements were taken again at several points on the ground and the pier, with still no features at 8 Hz. However, an impact on the crossbeam
showed a clear feature in the frequency response at 8 Hz. To characterize this response, a full set of measurements was taken around the floor and along the pier and crossbeam. Results were
consistent and key measurements are outlined. Full results and files are also available on the SVN at https://svn.ligo.caltech.edu/svn/seismic/Common/PierMotionStudy/EXH1/20140816.

Following these measurements, the 8340 was moved to the crossbeam and a measurement sequence covering the full north side was created to examine floor motion and mode shapes of the structure. These measurements
were completed and further analysis will follow. More extensive measurements of all four piers will also be completed.

no restarts reported

model restarts logged for Fri 15/Aug/2014
2014_08_15 13:20 h1iopsusauxex
2014_08_15 13:20 h1susauxex
2014_08_15 14:06 h1ioppemmx
2014_08_15 14:09 h1ioppemmx
2014_08_15 14:21 h1ioppemmx
2014_08_15 14:22 h1ioppemmx
2014_08_15 14:23 h1ioppemmx
2014_08_15 14:25 h1ioppemmx
2014_08_15 14:27 h1pemmx
2014_08_15 15:12 h1ioppemmx
2014_08_15 15:13 h1ioppemmx
2014_08_15 15:15 h1ioppemmx
2014_08_15 15:17 h1ioppemmx
2014_08_15 15:20 h1ioppemmx
2014_08_15 15:21 h1ioppemmx
2014_08_15 15:21 h1pemmx
2014_08_15 15:22 h1pemmx

no unexpected restarts. Recovery of h1susauxex after power outage, testing channel access parts in rcg2.8.5 on h1pemmx.

J. Kissel, T. MacDonald

We've whacked on the HEPI piers and surround floor some more today. We think we finally have a good combination of hit locations, hit strengths, and accelerometer locations that we're measuring the real flagpole motion of the pier at 8 [Hz]. Lots of plots, data, and analysis to come (as we know it's torturous to get data off the B&K system). Glancing at the rotation sensor signal, we found it had rung up to +/- 500 [nrad] during our activity and a visit by Robert, so we did the gravity dance a little bit, such that it now is moving +/- 250 -- Krishna is much better than us at this. We've left the end station as of 2014-08-17 8:00p PDT, or 2014-08-17 03:00 UTC.