Contamination Control Supplies Area Reorganized:
The CC Supplies area in the entrance to LVEA has been re-organized and supplies clearly labeled. 
The heavy use supplies like wipes and foil are in the most obvious and easy to grab location. 
NOTE: The different types of pre-saturated and dry wipes are not interchangeable. General rule of thumb is only use the red pre-saturated or dry Vectra Alpha wipes on Class A parts. (Rest are for "gross cleaning" and floor mop.) The supply shelf is labeled with which one to use, if in doubt ask Jeff B. or Margot.   
The more advanced cc tools like the witness wafers, PET swipe tool, 1'' optics or Top Gun ionizers should only be used by experienced operators. If you think your work in the LVEA cleanrooms/chambers would benefit from using these, contact Jeff Bartlett or Margot Phelps first for assistance. 

Contamination Control work in HAM chambers with Jeff B.:
We are utilizing the new PET swipe tools to track surface contamination during install in HAM4-6. Yesterday Jeff B. took swipe samples of the tables in HAM4, HAM5 and HAM6. We will replicate this at the start of different in-chamber activities to track surface particulate through different install tasks. 
Also plan on chamber inspection and any necessary cleaning of these HAM chambers this week, whenever we can get in there to do so.    

Reset WD counters on HAM3, HAM4, BS, & ETMX

h1build controls account password is now the same as the workstations' controls password.

LVEA Laser Safe

Jason – Set up at HAM6 for SR2 alignment.
TCS Crew – Working on TSC-X table
Apollo – Installing bellows between BSC1/BSC3& TCS-Y/TCS-X
Gerardo - Soft close GV5 and GV7
Justin - Shutter PSL & ALS lightpipe	
Thomas & Patrick – Debugging TCS-X rotational stage 
Richard – Y-Arm ESD cabling
Rick, Peter, Chris, & Justin – H1-PSL cleaning & alignment work
Jeff – Quad & BS Front end model changes
 

Soft closed GV5 at 9:10 am, and GV7 at 9:20 am.  They are to remain soft closed for TCS viewport work at BSC1 and BSC3.

Yesterday, Patrick found HEPI tripped at ETMY. His plots showed the HEPI L4C's rung up. We've been chasing problems there for a while dealing with pier amplification. This morning, I tried bringing HEPI back up and found that the HEPI L4C's would ring after bringing HEPI and the ISI up. My attached plot shows HEPI L4C spectra for the whole chamber isolated  in dashed blue (HEPI on position loops, ISI on level 3 isolated), HEPI postion loops on, ISI damping in green and HEPI off with the ISI isolated in red. Maybe we have a problem with the HEPI loops?

no restarts reported.

The AOS people and Vern

HWS table has been moved into a rough position in front of HAM4 so that the buildup of that table can commence. The HWS shipment has been received from Caltech so work can commence on this table

Vern had a look at the TCSx Beckhoff controlled HWP and its issues of it not rotating correctly. Its still unfortunately not working correctly and so he has some ideas to try and they will be looked into tomorrow

We have been looking into the alignment of the polarisers, we may be seeing evidence of birefringence occurring after the first polariser (not sure what due to), but we need to do some more investigation before making any definitive statements.  

Today I spent some time working on the automation of the dither alignment using guardian.  I think this should be working OK now, we can try using it for a while and see how this goes.

We need a signal to keep the X arm on resonance when we are working with the Y arm, because the michelson signal contaminates REFL_9 when ITMY is aligned.  Today I switched the refl bias path over to using the transmitted X arm power to lock on the side of fringe.  The attached screenshot shows the settings in the LSC matrix.  Stefan had the nice suggestion of using schmidt trigger to acquire this.  The transmitted power is normalized already, so the calibration into Hz is just multiplying by the FWHM of the cavity, 84Hz., done is LSC REFL BIAS. The offset in this filter determines where we are on the fringe. 

The gain is now set to give this path a crossover with the ALS COMM signal at 35 Hz, (Kiwamu's simulations have us using 30Hz crossover for this).  The gain of this path is attached. 

CDS workstations were frozen and not accepting logins. Cyrus fixed this with a reboot of cdsfs0.

08:52 Jeff and Andres to set up dust monitors near HAM 4,5,6
09:15 Hugh to HAM4
09:24 RO in alarm, sent email to Ski
09:56 Hugh out of HAM4, HEPI is locked, doors are still on
10:24 Matt, David working on TCS HWS table
10:46 Travis heading out to LVEA test stand area, cleanup work
10:52 Email from Ski, RO is fixed
10:53 Richard into H1 diode room
11:09 Jeff looking for serial cables near HAM1, HAM2
11:16 Hugh to lock HAM4 ISI
11:57 Hugh out of HAM4, ISI is locked
12:14 I reset the WD for the BS ISI, Guardian brought it back
?     I reset the WD for ETMY HEPI
12:27 Richard to end X to look at power supply
12:31 Monthly phone test of Hanford site emergency alert system
12:35 Jeff done installing dust monitor at HAM4 at location 1
12:47 Karen to end Y to clean
12:59 I ran the script to isolate ETMY HEPI to level 1
13:34 I restarted the video4 computer and the FOMs
13:37 Justin transitioned the LVEA to laser HAZARD
13:37 Karen back from end Y
13:42 Vern, Matt and David working on TCS rotation stage in LVEA
13:51 I reset the WD for ETMY HEPI. I ran the script to isolate ETMY HEPI to level 1
13:56 Jeff installed a dust monitor at location 6 inside the clean room over HAM 6
14:05 Richard to end X to look at high voltage supply
14:58 Richard back from end X, working on dust monitor in diode room

(Daniel, Alexa)

Today we measured the EY cavity length. We repeated the technique described in alog 9626. We ran the measurement three times. And got the following results:

where the offset refers to the common offset in the PDH REFL servo board. The results of each attempt is plotted respectively. (I have also attached the data and the matlab script that creates the plots and gives the values listed in the above table). This gives:

Zero crossing freq = 24.992280MHz ± 5Hz

EY Arm Cavity Length = 3994.4691m ± .7mm

If we compare this to the result for EX, we find that the cavity lengths differ by 1 ± 1mm. 

The ESD was non-functional this morning when we tried to operate it.  I went down to EX and found the negative supply in the off state (indicating a trip probably not someone shutting it off).  Turned it on went out to ESD drive to turn it on.  As soon as I turned on ESD amp the Neg. Power supply tripped off.  Went back out to power supply to see if I had not set the over current.  The unit was off again. This time it would not turn on.  Took this opportunity to swap out bot the positive and negative supplies.  The positive due to problems noted last week with sync. and the neg. do to this failure.  Power the system back up.  The system once again was in an odd state all of the supplies present but sitting at a neg rail.  I verified voltage everything was properly connected but still at a neg. rail.  This was the same state the unit was in on Friday when I had Kiwamu come out to help.  I disconnected the DAC inputs and reconnected them.  Everything came up just fine.  This is a very troubling state as the DAC was not sending out a voltage and the unit was behaving as though it was.

The unit is now running and seems to be working again.

Took PET swipe samples:
 (1). Center of HAM5 ISI from the north side door.
 (2). End of HAM6 ISI near east door. 
 (3). Just south of Center of HSM4 ISI from the south door.  

Added two new dust monitors to cover the installation and alignment work at HAMs 4,5 & 6. 

   Loc #1 is at the South side door of HAM4.
   Loc #6 is at the East side door of HAM6. 

Plot attached.

I updated the H1ECATY1PLC2 xml file with the required manual setting to be compatible with the autolockers, and turned it on.

All of the original four CSD prototype targets (H1ECATX1PLC2 H1ECATY1PLC2 H1ISCEX H1ISCEY) are now running.

I also stood up the infrastructure for the CSD for H1LSC and H1LSCAUX - this was literally just running the commands:

./createCSD H1LSC lsc /ligo/cds/lho/h1/burt/2014/04/28/12:00/h1lscepics.snap
./createCSD H1LSCAUX lsc /ligo/cds/lho/h1/burt/2014/04/28/12:00/h1lscauxepics.snap

followed by adding the systems to the CSD main screen.

Plot attached.