WP 3820.

I upgraded all four psl models (dbb, fss, iss, pmc) to the latest version. The steps are:

• check current safe.snap files give no errors (they did not)
• svn revert the adl files (they were modifed when reverse merged back to an earlier version)
• svn update the userapps/release/psl
• make, make-install the models
• stop the running models, start up the new models
• check if the existing safe.snaps give errors, only fss could not find some of its channels (iss, pmc, dbb may still be incomplete)
• restart the DAQ to clear 0x2000 error (incompatible fast ini file) on iss and fss models

First look through the top level medm screens looks good. On the fss screen the RFPD_DC signal is white because this channel has been removed.

I'll hand it over to Michael R for further check out. This closes WP3820

I'm going to turn off the damping on PRM for a 20 minute window starting at about 10:55 am, to get a spectrum to triple-check for rubbing.

EE sees a fault in the Kaman Satellite box which is mounted in the Pier Pod (See LHO aLogs 6162 & 6175).  These Kaman Boxes are tuned/calibrated to the actual Inductive Position Sensor (IPS) coils but changing these out is a bit more invasive.  Can be done but will take some time.  Meanwhile we have replaced the Pier Pod with another.
Bad/Removed PierPod/Kaman: S1202914/S0812221-06-04
Replaced w/: S1202909/S0812221-02-10

This will at least allow data for positioning to be trended.

Jim unlocked HAM2 and HAM3 ISIs. HAM3 door covers are restricted by bow attachments on the door so they don't couch HAM3 ISI. Door covers for HAM2 were half opened to prevent them from touching HAM2 ISI.

After Sheila reset all WDs, IMC started flashing with 00 mode. The alignment was actually pretty good.

PRM was put in an aligned position, and the beam made it through the baffle towards HAM1 though the horizontal motion of the beam was large enough that the beam clipped once in a while, but once things are under vacuum this should settle down.

All in all we're in a very good shape.

The Apollo stayed until 6 pm and got thru #7 on the checklist.

Below, please find the checklist that Apollo is using to sequence their close-out activities.

1.	Remove Walking Plates from BSC 2 (Place in E-Mod Staging Cleanroom)-done
2.	Replace dome on BSC2 (Check with SEI first: unlock ISI check cables-done
3.	Place hard cover on BSC2/HAM3 spool openings-done
4.	Install curtains on HAM3 cleanroom-done
5.	Move BSC cleanroom to beamtube by East Bay pipe bridge-done
6.	Dis-assemble Work Platform (Place on floor by BSC7)-done
7.	Move HAM3 cleanroom north as far as possible-done
8.	Close gaps in cleanroom to contain BSC2 spool area
9.	Move SEI related electronics over center of spool area
10.	Insert small spool piece
11.	Insert large spool piece
12.	Install HAM3 east door
13.	Move cleanroom from pipe bridge area to HAM4-plug in-turn on
14.	Call for HAM4 cleaning
15.	Install HAM2/1 east doors
16.	Install HAM 2/3 west doors
17.	Install BSC1 viewports
18.	Remove HAM4 north door
19.	Install blank on septum plate between BSC2 and HAM4
20.	Install HAM4 north door

Dave B., Patrick T.

This work falls under permit number 3833.

This afternoon we installed new EPICS IOC code for the dust monitors in /ligo/apps/linux-x86_64/epics-3.14.12.2_long_sc. The module code is met_one_227b-1.0.0 and the IOC code is dust_met_one_227b-1.0.1. The targets are in /ligo/lho/h0/target. The IOCs are running on h0epics2.

The code changes the channel names as follows:

H0:PEM-LVEA_DST$(ID)_3             ->  H0:PEM-CS_DUST_LVEA$(ID)_300NM_PCF
H0:PEM-LVEA_DST$(ID)_5             ->  H0:PEM-CS_DUST_LVEA$(ID)_500NM_PCF
H0:PEM-LVEA_DST$(ID)_MODE          ->  H0:PEM-CS_DUST_LVEA$(ID)_MODE
H0:PEM-LVEA_DST$(ID)_RH            ->  H0:PEM-CS_RELHUM_LVEA$(ID)_DUSTMON
H0:PEM-LVEA_DST$(ID)_TEMP          ->  H0:PEM-CS_TEMP_LVEA$(ID)_DUSTMON_DEGF
H0:PEM-LVEA_DUST_LOC_$(ID)_STATUS  ->  H0:PEM-CS_DUST_LVEA$(ID)_STATUS

H0:PEM-LAB_DST$(ID)_3              ->  H0:PEM-CS_DUST_LAB$(ID)_300NM_PCF
H0:PEM-LAB_DST$(ID)_5              ->  H0:PEM-CS_DUST_LAB$(ID)_500NM_PCF
H0:PEM-LAB_DST$(ID)_MODE           ->  H0:PEM-CS_DUST_LAB$(ID)_MODE
H0:PEM-LAB_DST$(ID)_RH             ->  H0:PEM-CS_RELHUM_LAB$(ID)_DUSTMON
H0:PEM-LAB_DST$(ID)_TEMP           ->  H0:PEM-CS_TEMP_LAB$(ID)_DUSTMON_DEGF
H0:PEM-LAB_DUST_LOC_$(ID)_STATUS   ->  H0:PEM-CS_DUST_LAB$(ID)_STATUS

H0:PEM-EX_DST$(ID)_3               ->  H0:PEM-EX_DUST_VEA$(ID)_300NM_PCF
H0:PEM-EX_DST$(ID)_5               ->  H0:PEM-EX_DUST_VEA$(ID)_500NM_PCF
H0:PEM-EX_DST$(ID)_MODE            ->  H0:PEM-EX_DUST_VEA$(ID)_MODE
H0:PEM-EX_DST$(ID)_RH              ->  H0:PEM-EX_RELHUM_VEA$(ID)_DUSTMON
H0:PEM-EX_DST$(ID)_TEMP            ->  H0:PEM-EX_TEMP_VEA$(ID)_DUSTMON_DEGF
H0:PEM-EX_DUST_LOC_$(ID)_STATUS    ->  H0:PEM-EX_DUST_VEA$(ID)_STATUS

H0:PEM-EY_DST$(ID)_3               ->  H0:PEM-EY_DUST_VEA$(ID)_300NM_PCF
H0:PEM-EY_DST$(ID)_5               ->  H0:PEM-EY_DUST_VEA$(ID)_500NM_PCF
H0:PEM-EY_DST$(ID)_MODE            ->  H0:PEM-EY_DUST_VEA$(ID)_MODE
H0:PEM-EY_DST$(ID)_RH              ->  H0:PEM-EY_RELHUM_VEA$(ID)_DUSTMON
H0:PEM-EY_DST$(ID)_TEMP            ->  H0:PEM-EY_TEMP_VEA$(ID)_DUSTMON_DEGF
H0:PEM-EY_DUST_LOC_$(ID)_STATUS    ->  H0:PEM-EY_DUST_VEA$(ID)_STATUS

Dave renamed the minute trend files to reflect these changes (directory name mapping is in the attached text file).
The medm screens, autoBurt.req files and the alarm handler configuration file were also updated to match these changes.

I also removed the transient period for showing alarms in the alarm handler configuration file, updated the guidance and added some dust monitor locations.

The new IOC code also fixes a division error when the sampling time is zero in the particles per cubic foot calc records.

TO DO: I still need to update the alarm limits and severities.

The Apollo crew got the Dome installed this afternoon.  Once the Dome was over head and all the covers were removed, Jim unlocked the ISI and we inspected the cable routing.  Here are a few photos to record the cable dressing.

Richard & I did some quick diagnosis and then pull the Pier pod from corner3.  So we have no HEPI positioning monitoring on corners 3 or 4.  Corner 4 gets its power from corner3.  Please mind all the BSC2 dial indicators.

- IO at HAM2 working on closing out alignment work, done.
- Travis - Dog clamps required on BSC2 ITM Elliptical baffles.
- Changed mats 
- SUS-IM models went down due to timing error, restored the front end to 4AM this morning per IO request.
- PCAL in the H2 enclosure
- Dome placed on BSC2

There was some discussion WRT options and timing for moving the BSC ISI from the staging building to X End. Mark Layne will pursue getting a flat bed on-site by Monday, 29 April, for ISI transport. 

The fit check of the Test Stand cleanroom was completed and the cleanroom moved from over the beamtube. The test stand cleanroom was partially (3/4) re-assembled. The IAS table was dis-assembled and relocated to the gate valve area. All remaining items needed from Y End were moved to X End. Half of the work platforms were assembled around BSC9.

Mark Layne was informed ~ 1:30 that all sub-systems had signed off on BSC2, so the Apollo crew was re-called from X End for dome replacement. The dome was in place by 3:15 and the bolts are being torqued now. Hard covers will be installed before the crew leaves today. 

Below, please find the checklist that Apollo is using to sequence their close-out activities.

1.	Remove Walking Plates from BSC 2 (Place in E-Mod Staging Cleanroom)-done
2.	Replace dome on BSC2 (Check with SEI first: unlock ISI check cables-done
3.	Place hard cover on BSC2/HAM3 spool openings-in progress
4.	Install curtains on HAM3 cleanroom
5.	Move BSC cleanroom to beamtube by East Bay pipe bridge
6.	Dis-assemble Work Platform (Place on floor by BSC7)
7.	Move HAM3 cleanroom north as far as possible
8.	Close gaps in cleanroom to contain BSC2 spool area
9.	Move SEI related electronics over center of spool area
10.	Insert small spool piece
11.	Insert large spool piece
12.	Install HAM3 east door
13.	Move cleanroom from pipe bridge area to HAM4-plug in-turn on
14.	Call for HAM4 cleaning
15.	Install HAM2/1 east doors
16.	Install HAM 2/3 west doors
17.	Install BSC1 viewports
18.	Remove HAM4 north door
19.	Install blank on septum plate between BSC2 and HAM4
20.	Install HAM4 north door

The ITMy elliptical baffle has had its 2 dog clamps installed.  The ITMx baffle has only had one of its 2 dog clamps installed due to the presence of SUS dog clamps.  Per the direction of the install lead, we will leave these dog clamps as is until the hole pattern issue is resolved and the dog clamps can be correctly installed. 

I added the biquad=1 flag to the cdsParameters block of the following models, and did a make (but not a make install yet) to test for successful compilation. All were OK, so I svn committed them. I'll do a make install later, when people are done for the day.

h1susauxb123.mdl 
h1susauxb6.mdl 
h1susauxh2.mdl 
h1susauxh34.mdl 
h1susauxh56.mdl
h1susbs.mdl 
h1susbstst.mdl 
h1susetmy.mdl 
h1susitmy.mdl 
h1susmc1.mdl 
h1susmc3.mdl 
h1suspr2.mdl 
h1suspr3.mdl 
h1susprm.mdl
h1susquadtst.mdl 
h1sussr2.mdl 
h1sussr3.mdl 
h1sussrm.mdl 
h1sustmsy.mdl

The following models already had the flag and will not be touched:
h1susim.mdl
h1susmc2.mdl
h1susomc.mdl

- Sheila, Keita, Cheryl

- PRM bias relief was successful:

- PRM alignment is good, with one issue with the IOP watchdog when parked:

New aligned biases that send REFL to HAM1 are:
P = -830
Y = -50

New parked biases that send REFL to it's parking spot through the baffle on the viewport on the top of HAM2 are:
P = -330
Y = -6100

The parked position of PRM will trip the IOP DC watchdog, and HIFO will run with the PRM parked most of the time, so this needs a solution.  The PRM is damped when it's parked, so one solution might be to give it it's own IOP watchdog.

- AOE2 which is in front of IM4, and is currently just a baffle, was moved by 1-2mm in the -X direction on HAM2.  This was necessary to allow the parked REFL beam to pass through the baffle with enough clearance to withstand small beam position changes and not clip.  The forward beam is off centered on that baffle aperture in order to accommodate the parked REFL beam, and has plenty of clearance to withstand small beam position changes.

- Pictures of iris alignment clamps left attached to the HAM tables were taken.   These alignment clamps are in front of MC1, MC2, and MC3, and PR2, and on MC3 Trans, and PRM Trans.

I had to go home in the afternoon, so we couldn't do any alignment work, which should be done on Monday. EY is in laser hazard.

We did check the beam diverter. (This one should be replaced anyway, but not before moving the entire EY to H1 position. https://services.ligo-wa.caltech.edu/integrationissues/show_bug.cgi?id=83)

Beam diverter is connected to F2-2C2 feedthrough on BSC6. From outside, pin1-14 is the coil, pin2-15 is one of the reed switches (SW1), and pin3-16 is the other (SW2).

When pin1 is positive and pin14 negative, the beam diverter moves from "open" position where the mirror is tipped toward EY to "closed" position where it is tipped away from EY.

However, we've found that pin1 is short-circuited to the chamber and the building ground. This means that you need a floating supply to drive it (which is not a problem for a proper driver but is a problem when you're using a power supply with one of the pins grounded). If for example the negative is grounded and if you try to "close" it by supplying positive to pin 1, all current goes to the ground via short circuit, not the coil.

Anyway, the problem is somewhere in the chamber. This should be checked when EY is moved to the H1 position, most likely an offending cable should be replaced.

One of the reed switches is still stuck, despite a previous report that it was somehow magically unstuck: https://services.ligo-wa.caltech.edu/integrationissues/show_bug.cgi?id=2

When in "open" position both of the switches are closed. When "closed" one of the switch opens.

Dan tested beam diverter and everything worked including the motor and the two reed switches.

That's strange as one of the two reed switches was stuck before, but somehow it's unstuck. Anyway it's good.