ISI ITMX, HAM5
SUS SRM

Eathquake band seismic now above 10 um/s.

See attached.

O1 day 61

model restarts logged for Tue 17/Nov/2015
2015_11_17 08:02 h1broadcast0
2015_11_17 13:33 h1broadcast0
2015_11_17 13:33 h1dc0
2015_11_17 13:33 h1nds0
2015_11_17 13:35 h1nds1
2015_11_17 13:35 h1tw0
2015_11_17 13:35 h1tw1
2015_11_17 16:41 h1ioplsc0
2015_11_17 16:41 h1lsc
2015_11_17 16:41 h1omc
2015_11_17 16:42 h1ioplsc0
2015_11_17 16:42 h1lscaux
2015_11_17 16:42 h1lsc
2015_11_17 16:42 h1omc
2015_11_17 16:49 h1iopiscey
2015_11_17 16:49 h1iscey
2015_11_17 16:49 h1pemey
2015_11_17 16:50 h1alsey
2015_11_17 16:50 h1caley
2015_11_17 16:50 h1iopiscey
2015_11_17 16:50 h1iscey
2015_11_17 16:50 h1pemey
2015_11_17 16:57 h1dc0
2015_11_17 16:58 h1broadcast0
2015_11_17 16:58 h1nds0
2015_11_17 16:58 h1nds1
2015_11_17 16:58 h1tw0
2015_11_17 16:58 h1tw1
2015_11_17 17:03 h1sysecatc1plc1sdf
2015_11_17 17:03 h1sysecatc1plc2sdf
2015_11_17 17:05 h1sysecatc1plc3sdf
2015_11_17 17:05 h1sysecatx1plc1sdf
2015_11_17 17:05 h1sysecatx1plc2sdf
2015_11_17 17:06 h1sysecatx1plc3sdf
2015_11_17 17:08 h1sysecaty1plc1sdf
2015_11_17 17:08 h1sysecaty1plc2sdf
2015_11_17 17:08 h1sysecaty1plc3sdf

Maintenance day followed by wind induced power glitch. DAQ restarts in morning for maintenance changes. h1lsc0 and h1iscey restarts due to power glitch. DAQ restart due to LSC reconfiguration. Started Beckhoff SDF systems.

6.8
119km SW of Dadali, Solomon Islands
2015-11-18 18:31:04 UTC 10.8 km deep

Spike above 1 um/s in both earthquake and microseism bands.

Had to adjust dark offsets for ASAIR_B_RF90. Now waiting for DRMI to lock.

Kiwamu unplugged the cable for the LVEA CDS wifi and turned off the lights.

Bailing and clean up at LHO.

The power glitch yesterday tripped the high voltage for the OMC and PMC. DIAG_MAIN had a test for the OMC, but not the PMC. Until now! Jenne requested this in alog23493 and it has been loaded in and committed to the svn.

Code below:

@SYSDIAG.register_test
def PMV_HV():
    """PMC high voltage is nominally around 4V, power glitches and other 
    various issues can shut it off.
    """
    if -0.5 < ezca['PSL-PMC_HV_MON_AVG'] < 0.5:
        yield 'PMC high voltage is OFF'

Control room displays for Guardian status, Pitch and Yaw control signals, Vacuum Site Overview, Wind Speed, CDS Overview, and Operator Overview have been added to the control room screens web page at https://lhocds.ligo-wa.caltech.edu/cr_screens/

Clean up is starting. Images are from out the kitchen window and the front door.

TITLE: 11/18 [DAY Shift]: 16:00-24:00 UTC (08:00-16:00 PDT), all times posted in UTC
STATE Of H1: Down
OUTGOING OPERATOR: Nutsinee
QUICK SUMMARY: Wind has died down. Richard is diagnosing the ESD driver.

Wind speed decreased below 20. The first problem I ran into is when requested SET_SUS_FOR_ALS the ALS flashes on the camera disappeared. DIAG_MAIN also complians that both ETMs ESD drivers are off. I toggled the on/off button but nothing changes. I'm not sure at what state the ESD drivers has to be turn on. Hopefully Guardian will take care of this later in lock acquisition.

11/18 Owl Shift 08:00-16:00 UTC (00:00-08:00 SPT)

Quick Summary: The wind is still fluctuating between 20-30 mph. Since LLO has shut down the site I will be taking my time and wait until the wind speed decrease a little more before starting an initial alignment. Things are looking possitive.

What was done:

1. RF AM measurement unit (D0900891) installation.
2. Taping down 45MHz cable from the ISC ract to the EOM driver.
3. Rephasing

1. RF AM measurement (D0900891) unit installation

To better diagnose the problem, we inserted RF AM measurement unit (D0900891) between the EOM driver and the EOM.

For connection cartoon, see the first attachment.

The unit was placed on top of the DCPD interface box that was next to the EOM driver.

Couplers are connected back to back such that the first one sees the forward going RF, the second one the reflection from EOM. Insertion loss of one coupler is rated 0.3dB and this was confirmed by the power measurement. Driver output was 23.34dBm (measured by RF meter with 30dBm attenuator), after the second coupler it was 22.67, so the insertion loss of two couplers is 0.67dB. We didn't do anything to compensate, it's not a big deal. But this means that the modulation index is smaller by that much.  

EOM reflection was measured by looking at reverse direction coupler output on the scope, which was about -11.6dBm (about 59.1 mVrms with 50 Ohm input). The reflection from EOM should be something like 20-11.6=9.4dBm, i.e. EOM is only consuming 22.67-9.4 ~ 13.3dBm.

Just so we can, Kiwamu tightened the SMA connectors on the EOM inductor box. We also wiggled various things but didn't get any new insight except that wiggling/tapping power cable/connector on the EOM driver and on +-24V distribution strip didn't do much.

Forward going coupled output was connected to the manually adjusted channel. Front panel was adjusted so the MON voltage becomes closest to zero. That was MON=-300mV at  2.6dBm setting.

Reverse going couple output was connected to the automatically biased channel.

This unit needs >+-28V supply in addition to +-17. Filiberto made a special cable that has bananas for +-30V and usual 3-pin for +-17, and we put a Tenma supply outside of the PSL room for +-30V-ish.

A long DB9 was routed from CER to the PSL rack, and a short one was routed from the PSL rack to the RF AM measurement unit, for DAQ. This was plugged into the spigot that was used for the spare EOM driver unit before (i.e. "RF9" monitors).

H1:LSC-MOD_RF9_AM_ERR_OUT_DQ and H1:LSC-MOD_RF9_AM_CTRL_OUT_DQ are for EOM reflection monitor.

H1:LSC-MOD_RF9_AM_AC_OUT_DQ and H1:LSC-MOD_RF9_AM_DC_OUT_DQ are the channels for forward going RF monitor. AC corresponds to ERR and DC to CTRL.

2. Taping down 45MHz cable

We changed the routing of the RF cable between the driver and the ISC rack. Inside the PSL room, it used to go under the table but over the under-table cable tray, and kind of floating in the air from the floor to the cable tray, and from the cable tray to the EOM driver, pushed by other cables.

We rerouted the cable so that it never leaves the floor, and taped it to the floor using white tape. We also taped down some of the cables that were pressing against the RF cable. See the second attachment.

3. Rephasing

In the lab, the delay of the double couplers alone for 45.5MHz signal was measured to be about 0.8 ns or 13 degrees. Kiwamu made a long cable, we added two N-elbows, and we measured the transfer function from ASAIR_A_RF45_I_ERR to Q_ERR. We ended up having:

Q/I = +4.45 (+-0.14), or 77.3 (+-0.4) degrees.

Before the installation this was 77.5 (+-0.1) deg (https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=23254), so this is pretty good.

Jonathan, Jim, Patrick, Dave:

Looks like we got away lightly with this glitch (famous last words). We just needed to reboot h1lsc0 and h1iscey. We got permission from Mike to make the h1lsc model change requested by Duncan and Detchar to promote the channel H1:LSC-MOD_RF45_AM_CTRL_OUT_DQ to the science frame (WP5614). We restarted the DAQ to resync the lsc model. Interestingly while the DAQ was down, my epics freeze alerts went crazy until the data concentrator came back. This did not happen during the 13:30 DAQ restart, but might suggest a link between DAQNET and FELAN ports on the front ends.

We have restarted all the Beckhoff SDF systems to green up the DAQ EDCU. At the time of writing the CDS overview is green with the exception of an excitation on SUS-BS.

The wind continues to hammer on the wall of the CER, hopefully no more power glitches tonight.

Today I re-zeroed all of the active H1 optical levers.  The table below shows their pitch/yaw values before re-zeroing and the values as they read when I finished each oplev (there could be relaxation in the motors causing a slow, slight drift, especially in the BS and HAM2 oplevs which are zeroed with piezo motors steering a 2" turning mirror).  This closes work permit #5606.

Calibration parameter updates that includes data until Nov 11.

Kappa_tst is slowly trending up after the bias sign flip on Oct 16  and rest of the paremeters show normal variations that we have seen in the past.

The first plot contains all the parameters that we calculate. 

The second plot highlights kappa_tst, kappa_C and cavity pole of which the kappa_tst and kappa_C will be applied to h(t).

This data is filtered for locked state using GDS state vector and thus contains some outliers at times when the IFO is locked but not in anlaysis ready state. In  future, we plan to use GDS state vector which will give us the flexibility to only use analysis ready data.