Here is the current status of the aLIGO SEI work regarding the HAM chambers. Everything in bold is to be completed for HIFO-Y. Everything in red is a change from last week's status. Everything in green is available.

·         HAM 1

o    HEPI: To be commissioned, currently locked
       Electronics and cables ready

·         HAM2

o   ISI: previously commissioned with HEPI locked (recent performance spectra), currently unlocked, in vacuum

o   HEPI: to be commissioned, currently locked, models and electronics ready. Commissioning could starts once the IMC locks again.

·         HAM 3

o   ISI: previously commissioned with HEPI locked (recent performance spectra), currently unlocked, in vacuum

o   HEPI: To be commissioned, currently locked, model and electronics ready. Commissioning could start once the IMC locks again.

·         HAM 4 

o   ISI: In chamber, Previously tested during assembly validation, currently locked, no suspension installed, in-vac cables not connected, chamber temporarily closed.
     Electronics ready, in field cables ready, in-rack cables 90%

o   HEPI: Currently locked, to be commissioned
     Electronics ready, in field cables ready, in-rack cables 90%

·         HAM 5

o   ISI: In Chamber, Previously tested during assembly validation, currently locked, no suspension installed, in-vac cables not connected, chamber temporarily closed.         
    Electronics ready, in field cables ready, in-rack cables 90%

o   HEPI: Currently locked, to be commissioned     
     Electronics ready, in field cables ready, in-rack cables 90%

·         HAM 6

o   ISI: in a container. Need to be retrofitted with aLIGO censors (GS13, CPS) and to receive a new set of Actuator Cables. Cables and inertial sensors will be tested prior to installation. All this will happen chamber-side prior to installation in chamber. Commissioning will follow.
    Electronics and cables started, the rest is ordered

o   HEPI: Currently locked, to be commissioned
     Electronics ready, in-rack cables 90%

There was not so much progress on the IMC WFS commissioning yesterday.

From the late evening MC1 started tripping for some reason and this prevents the IMC from locking stably. I made a contact with Arnaud and Mark.

Besides, I re-adjusted the demod phases of WFS_A and WFS_B again. This time I rotated the phase of some of the segments by 180 deg such that all of them shows the same sign in the error signal of the IMC length. This resulted in a more sensible response in WFS_A (e.g. shaking pitch of MC2 gives pitch signals in WFS-A). I didn't get a chance to look into WFS_B yet.

Attached are plots of dust counts requested from 5 PM May 30 to 5 PM May 31.

The dust monitor at location 14 in the LVEA (H2 PSL enclosure) is indicating a calibration failure.

After 45 minutes or so, GV5 "cammed" closed -> As such, I went ahead and valved-in the YBM MTP for the weekend.  

For future reference;  use 5-10 psi for GV5 soft close instead of 10-15 psi (each pneumatic valve is unique, observed range varies between 15-25 psi to cam close)

Quick work inside the LVEA – Richard
Viewport camera work at BSC6/BSC10 End Y – Jax/Alexa
Work on Luminator at End Y – Filiberto
Work around the site – Fire Department
Restart of all LVEA Dust Monitors - Patrick
Quad work (LVEA) – Betsy
Door Handles Replacement at End Y – Michael R.
GV18 Soft-close at End Y – Kyle
GV5 Soft-close at Corner Station – Kyle
LVEA Transitioned to Laser Hazard – Cheryl
H2 PSL minor work (LVEA) – Pablo
Trip to End X to put a sign - Patrick

(Jax, Alexa)

We have initial alingments for TMS-Y, ITM-Y, and ETM-Y. The green light from the TMS was observed at ITMY, the reflected light from ITMY was observed at ETMY, and light was returned from ETMY to ITMY.

The initial pointings in (P,Y) convention:

TMSY - (-14400, 9170)

ITMY - (246.0, -275.0)

ETMY - (-140.0, 198.0)

Locking attempts to follow?

For the 200W laser

There is a broad peak at 4kHz in the ISS rpn plot which appears in the 200W laser's rpn plot as well. For comparison, the last time I took these plots for the 200W laser as 10/30/2012.

I set the damped TFs running last night to check effectiveness of new damping settings. Measurements done when checked at 7:45 am. Plots pending.

^/trunk/QUAD/X1/ETMX/SAGM0/Data/2013-05-30-1053969993_X1SUSETMX_M0_0p01to50Hz_tf.mat

^/trunk/QUAD/X1/ETMX/SAGR0/Data/2013-05-30-1053987452_X1SUSETMX_R0_0p01to50Hz_tf.mat

This is a late alog from yesterday morning. Before the gate valve was open I went out to end y to adjust the transmontane position to see if the 10 uW beam on the refl pd was a gobst beam.  With a better alignment of the Trans mon there were:

8.87 mW green power before the EOM, 1.35mW onto the refl PD and -0.220 volts on the dc output.

[Alexa, Kiwamu]

We are ready for closing the WFS loops.

We excited MC3_M1_P at around 3 Hz with an amplitude of 10 counts by AWG. Monitoring the peak in DTT we minimized a signal leaked in the Q-phase. The WFS-A looked perfect and we didn't re-adjust it at all. As for WFS-B we adjusted segment 2 (whose cable was replaced) and segment 3. Plus, later on we flipped the sign of all the segments by further rotating the demod phases by 180 degs in order to have the same signal sign as that of WFS-A.

Attached are plots of dust counts requested from 5 PM May 27 to 5 PM May 28.

Attached are plots of dust counts requested from 5 PM May 28 to 5 PM May 29.

Attached are plots of dust counts requested from 5 PM May 29 to 5 PM May 30.

Redoing the damped TFs on X1 with new damping filters and gains per LHO alog 6548.