J. Kissel (D. Barker, J. Batch)

Since the CDS crew has the h1sush56 computer up and running, and I was already going through infrastructure sweeps today, I figured I'd close out by getting the user front-end models up and running for H1 SUS SRM, H1 SUS SR3, and H1 SUS OMC. After copying over the corresponding L1 simulink files from the userapps repo, changing L1 to H1, l1 to h1, and cleaning them up a little bit, it was straight forward to compile*. After the models were up, I followed the usual instructions to get the new infrastructure filled in, taking full advantage of the recently freshened up safe.snaps and filter files from the input arm suspensions. There's still a ways to go for the OMC because neither LLO or myself have put much effort into it yet, but we'll get there.


* There's still a small snafoo in that the second bit on the RT NET STAT word on H1 SUS SR3's GDS_TP screen is red, indicating (I believe), that SR3 is getting errors upon receiving the his optical lever signals from SRM over the PCIe Dolphin Network. Jim and I scratched out heads over this, and tried various combinations of fixing the IPC file, clearing out the IPC file (of the offending/new channels only), and recompiling, but to no avail. We'll leave it for tomorrow so Dave can take a look, but worse-comes-to-worst, we can just use Shared Memory which appears to be working. Naturally, it didn't help that I began compiling the models before I'd caught every instance of L1 to H1. (*).(*) But all of that's fixed now...

[Keita and Kiwamu]

Details are coming soon.

EY stays laser hazard tonight. Alignment of the red beam path will be performed tomorrow.

The LVEA was transitioned to laser hazard.
The h1ecatc1 Beckhoff computer crashed.
The end Y ISI was locked. End Y was transitioned to laser hazard. Keita and Kiwamu installed a new PZT mirror on ISCT-EY. Work was started on replacing a QPD.
Gerardo opened and closed gate valves to measure the out-gassing of the X arm.
The end Y cold cathode gauge, PT424 failed. Gerardo and Richard fixed it.
Hugh and Jim worked on ISI cabling for BSC2. Hugh surveyed the elevation of the optical table.
The clean rooms for BSC2 and HAM3 were combined to allow access to the HAM3 door. The forklift was craned over the Y arm beam tube.
School group on site
Dave compiled h1iopsush56 against RCG 2.6.2 and restarted it.
Light fixtures replacement in mechanical room.
Pcal equipment set up in NW corner of LVEA north bay.
Fluid was added to the HEPI lines.

Added h1sussrm, h1sussr3, and h1susomc models to master file, restarted daqd at 16:50 PST

Shots of the 3/6//2013 BSC 2 installation appear in ResourceSpace.

We cracked the main supply lines from the Pump Station array in the mech room and added several gallons of fluid to the system.  We did this with the pumps running but some air coming back apparently generated some cavitation and the system stopped.  We will start up again in the morning when the EE guy is around.

I toured the LVEA lines and found no leaks.  So again, the pumps are off, the only pressure is the head from the Mezzinine.

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.

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