We dropped the Cabling from the ISI down into the chamber and plugged the CPS cabling to the in-chamber feedthrus.  These signals will allow ISI to balance etc the floating stages as well as confirm the health of the CPS which often suffer from rough handling.  This may have occurred with the C3 covers and other work during the Cartridge install yesterday.  The other sensor cabling was not connected to the feed thrus.  These need a little doctoring and dressing and we needed to limit our time inside.

Before exiting we shot elevation/level of the optical table with the optical level.

Nominal elevation of a BSC ISI Optical Table is +1661.7Gz; BSC2 has no global to local correction.  The Beam Splitter though is being set low by 2.9mm(percomm-DCoyne).  I don't know if IAS has any vertical adjustment to correct for from the Test Stand Alignment.

Attached is my survey logbook page.

The average elevation of the Optical Table is 1658.0mm with a 0.4mm range of readings.  This puts the Optical Table currently low by 0.8mm and out of spec for level by 2x.  Still not bad.  I also recorded the Dial Indicator readings so we can muck around with this if possible.

Randy and crew tried unsuccessfully to crane the cleanroom over the valve on the ion pump. After consultation with John, the cleanroom legs were raised 6 inches and the cleanroom move was tried again with success. HAM3 cleanroom was butted right up to the BSC2 cleanroom but at a slight offset to accommodate the power box and leg casters. HAM3 cleanroom curtains were adjusted to fill gaps: additional curtain work will be done in the morning. The cleanroom was powered up and turned on: FFU function will be checked in the morning. First cleaning was done and west door bolts were removed except for the usual four, which were loosened. The lower level garbing/staging cleanroom was moved to allow west door access. The forklift was craned over the beam tube so it can be used for door removal.

Hard cover was returned to BSC2 after Hugh's brief entry this morning.

Guido M, Joe G, Deepak K

The Mode Cleaner was aligned to the following offsets. It is still a little off on Pitch.

The Alignment Offsets are

MC1 -
            Pitch : -46 ct
            Yaw  : -3750 ct

X1 module yields an outgassing rate of 7.3 e-15 tl/s/cm^2. Warmer today and the sun is out - currently 54F.

The h1ecatc1 Beckhoff computer crashed again. Running with a limited number of channels does not appear to have helped.

One of the ENDY cold cathode gauges seems to have failed this morning. PT 424 (LN pump) has gone to zero and is showing RED. This will be investigated in the next few days. PT423 is only a few feet away and can be used instead.

After last nights Beckhoff crash, Patrick is not running a full IOC set of slow channels. He is testing if reducing the EPICS load on the Beckhoff will increase its stability. While we are not running these IOC channels, I have removed them from the DAQ to "green up" the EDCU. I removed H1EDCU_TIMING.ini and H1EDCU_ECATC1.ini from the h1dc0 master file and restarted the DAQ.

J. Kissel, A. Pele

Arnaud and I have given the three PR suspensions a similarly good thrice-over experts check on their infrastructure, along with a few updates and adding things that weren't in place in as-yet non-critical paths:

- Installing the ISI to SUS Witness Path (for PRM and PR3), 
- Installing and turning on the ASC ISCINF 2k to 16k AA filters 
- Turning on any band-limiting filters that were not already in the Watchdog paths,
- Ensuring the watchdog thresholds were set consistently and appropriately,
- Confirming the open light current compensation was up-to-date in the OSEMINF banks, 
- Confirming that the sensor calibration is turned on, 
- Confirming that the alignment offset calibrations were installed, 
- Confirming the BIO swtiches were set to State 1, 
- Installing the OL2EUL matrix (for PR3)
- Damping loop gains and filters are as desired, identical to LLO


As such, I've taken new safe snapshots, which are now committed to the userapps repo:

/opt/rtcds/userapps/release/sus/h1/burtfiles/
h1susprm_safe.snap
h1suspr2_safe.snap
h1suspr3_safe.snap

P. Fritschel had designed better performance damping filters for the longitudinal degree of freedom for the HSTSs (see LLO aLOG 4739), which have been installed for quite some time at LLO. Further, though the performance isn't necessarily better, the gains for all other degrees of freedom have been tuned to give reasonable Qs, with a consistent set of filters between degrees of freedom (see LLO aLOG 4061). Finally, using these filters, I've reproduced their design in matlab, set them as default filters to be wrapped around the production model, and am able to reproduce closed-loop transfer functions to very good accuracy (see LLO aLOG 6041).

In order to take advantage of these changes (better longitudinal performance, site-to-site symmetry, and having a accurate model of the filters in the can), I've copied over the filters and gains from LLO. 

All of the above refers to the HSTSs. For PR3, an HLTS, its performance has yet to be tested, but I've got a similar successful model of the LLO filters and gains. So, again, in the interest of not having many different configurations of loops scattered about, I've also copied LLO's HLTS filters and gains.

So you don't have to go scouring, I'll reproduce the settings here:

HSTSs:
L: FM3 [resg], FM5 [normL], G = -1.0
T: FM1 [0:30,30], FM5 [normT], FM10 [ellip50], G = -2.0
V: FM1 [0:30,30], FM5 [normV], FM10 [ellip50], G = -3.0
R: FM1 [0:30,30], FM5 [normR], FM10 [ellip50], G = -0.2
P: FM1 [0:30,30], FM5 [normP], FM10 [ellip50], G = -2.0
Y: FM1 [0:30,30], FM5 [normY], FM10 [ellip50], G = -1.0

HLTSs;
L: FM1 [0:15,15], FM5 [normL], FM10 [ellip50], G = -2.0
T: FM1 [0:15,15], FM5 [normL], FM10 [ellip50], G = -5.0
V: FM1 [0:15,15], FM5 [normL], FM10 [ellip50], G = -1.0
R: FM1 [0:15,15], FM5 [normL], FM10 [ellip50], G = -0.02
P: FM1 [0:15,15], FM5 [normL], FM10 [ellip50], G = -0.002
Y: FM1 [0:15,15], FM5 [normL], FM10 [ellip50], G = -0.02

Note, the repeat of normL for every degree of freedom in the HLTS is *not* a typo. The purpose of the norm filter is to compensate for the calibration of the OSEMs, and in the case of the HSTSs, to absorb some of the gain of the filter such that the visible GAIN field is of order unity. The calibration is turned on for both types of SUS, so that inversion is in place -- (1/to_um) = 43.478, but we've not yet tuned and absorbed the gains for the HLTSs, so the value is the same for each degree of freedom for that SUS type.

All six filter files for H1SUSMC1, H1SUSMC2, H1SUSMC3, H1SUSPRM, H1SUSPR2, H1SUSPR3 have been copied to and committed in the userapps repository, under
/opt/rtcds/userapps/release/sus/h1/filterfiles/

found that h1iopsush56 was incorrectly built against RCG2.6.1, we rebuilt against 2.6.2 and restarted. This fixed the bogus ADC bit error in the STATE_WORD.

We noticed h1susmc2 was built Tuesday against a modified RCG2.6.2 and should be rebuilt and restarted at some time.

While scouring the PR SUS screens and EPICs values to be sure they're up-to-date, I noticed that both the HLTS and HSTS overview screens (SUS_CUST_HSTS_OVERVIEW.adl and SUS_CUST_HLTS_OVERVIEW.adl) were still pointing to an old SUS_CUST_HXTS_M3_WD.adl screen which has some preliminary design of the optical lever portion of watchdog and was buggy in its parsing of the status bitword for PR3. Only PR3 has an optical lever, none of the HSTSs have one. I've now updated both overview screens to point to respective HLTS and HSTS M3 WD screens, SUS_CUST_HLTS_M3_WD.adl and SUS_CUST_HSTS_M3_WD.adl respectively. Their screen shots are attached.

The updated and new screens have been committed to the userapps repository, under
/opt/rtcds/userapps/release/sus/common/medm/hxts/
(Note I've also logged in and svn up'ed this directory, therefore updating the LLO screens for them since it's an noninvasive change, they also have no PR3 or SR3 optical lever yet, and haven't started using the lower stages of their HLTSs).

In addition, because the optical lever on PR3 doesn't exist yet, and the band-limiting filter bank on the RMS path wasn't visible/accessible/linked from the previous WD screens, they had remained empty until now. Similar to the OSEM Band-limiting filters (), I've filled in FM1 in the SUM bank ($(IFO):SUS-$(OPTIC)_M3_WD_OPLEV_BANDLIM_SUM) with the 10 Hz low pass, 
dcBandLim = zpk([],[10],1,"n") (foton design string)
and the P and Y paths ($(IFO):SUS-$(OPTIC)_M3_WD_OPLEV_BANDLIM_$(DOF)) with the 0.1 - 10 Hz band pass.
acBandLim = zpk([0;8192;-8192],[0.1;10;10],10.1002,"n") (foton design string)
Finally, for lack of experience, I've set the minimum SUM threshold to 5000 [ct] (based on half the typical light sum seen on the test mass optical lever), and the maximum RMS threshold also to 5000.
(These filters still need to be installed on LLOs HLTSs).

Sanity check:

An overnight accumulation yielded the same results for the Y2 module. Conclusion - We can get reasonable results with a 4 hour accumulation. Temperature overnight 29F.

The bump in pressure at ~3:00 AM(11:00 utc) is not explained - maybe just a gauge artifact.

The h1ecatc1 Beckhoff computer just crashed about 10 minutes ago. Logging in shows a dialog box saying that 'Windows has recovered from an unexpected shutdown'. I will leave it for the night.

This means the PSL environment channels are down again.

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot requested from 5 PM March 5 to 5 PM March 6. Also attached are plots of the modes to show when they were running/acquiring data.

Data was taken from h1nds1.
T0=13-03-06-01-00-00; Length=86400 (s)
420 seconds worth of data was unavailable on this server
1440.0 minutes of trend displayed

Guido M, Joe G, Deepak K

We restored the IMC mirror positions inside their suspension systems based on the Pitch and Yaw OSEM readings to their best lock values (02/10/13 22:20:00). The Pitch/Yaw readings and the Alignment Offsets of the three mirrors are:

MC1:
Alignment Offsets - 
                                  Pitch : 355 ct (665.661 urad)
                                  Yaw  : 497 ct (1332.258 urad)
Mirror OSEM Value - 
                                  Pitch : -2615 urad
                                  Yaw  : 46 urad
                                   Length : 80 um

MC2:
Alignment Offsets - 
                                  Pitch : 65 ct (121.9 urad)
                                  Yaw  : 137 ct (367.8 urad)
Mirror OSEM Value - 
                                  Pitch : -21 urad
                                  Yaw  : 137 urad
                                   Length : 5 um

Following aLOG 5671, I have started to restore the HEPI at EY this afternoon. Here are the few tasks performed:

- Large offsets were visible in corner 3. (Source of the shift (Feb 25^th,2013) is unknown at the moment). I applied offset drives in the local basis to bring back the IPS within 3000 counts.
- I cancelled out IPS offsets in the Cartesian basis
- Few weeks ago, I modified the commissioning scripts such that the minus sign of the feedback loops is introduced in the isolation filters. Before the modification, I temporary put the minus signs in the Output filter bank to be able to use the "ramp up" script. I removed the minus sign from the output filters bank.
- Ramp up isolation filters
- Applied the yaw offset (-737800 counts)

STS-2 (ground instrument) looks currently off centered and signals are pretty flat. Centering the seismometer was unsuccessful.
STS-2s can be re centered either using by pushing the AZ button (front panel of the interface chassis) or using binary outputs. At this point, binary outputs are only controlled by the ISI models (the feature is not implemented in the HEPI models). I noticed that the STS-2 centering bit (at EY) was high whereas it should not (The ISI output word is right). I left the binary output cable (from BO chassis to STS2 chassis) disconnected.

9:00 LVEA laser safe

10:00 Start moving the BS quad suspention

14:00 EY in laser hazard (Corey and Kiwamu)

14:15 Pooling water sample

14:20 Student at the control room and around (Dale)

14:30 Fire alarm at the Warehouse triggered by open an oven (contac Justin for more details)

14:45 BS in BSC2 completed

15:00 Safety meeting