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.

The h1sush2b front end encountered a timing error this morning at 08:48 local time. The IRIG-B timing diag went into the 1800 range immediately. There was no error at the IO Chassis end, a restart of the IOP model cleared the error. After restarting the user model h1susim I BURT restored it to 4am as per Cheryl's request.

The attached script is a quick calculation of the ABCD matrices from the MC waist and IM1, IM2, IM3, IM4 to PRM that Keita asked for yesterday. It is based on optics coordinates found in T080078-05  (written in 2008)  It doesn't take into account the angle of incidence on the curved mirrors.  
If someone from IO has done a more careful job or used more up to date coordinates, it might be useful to send a link. 

Cheers, Sheila

good alignment before ISI work			
4/9 7:00:00 to 13:00:00			

alignment before flashing IMC			
4/18 21:10:00 to 21:25:00			


--- HAM2 ISI ---
	9-Apr	18-Apr	diff
H1	-3860	-3300	  560
H2	-2270	-2670	-400
H3	    680	 -230       -910

V1	    712	  425 	-287
V2	    -81	-470 	-389
V3	-1728	  -90	        1638

calibration is 32768cts/mm		

PRM sees mostly V2 and V3		

1638 - (-389)	2027	counts

with calibration
0.062	mm

distance between V2 and V3		

49.5 inches	1257mm	

change in angle		

4.9324E-05	49	urad	

49urad at 16.5m			

0.0008085m	

---- punchline - tilt of the table causes 0.8 mm beam displacement at MC2/HAM3, and all numbers are within the stated spec. of 1600 counts change (well, one is 1628 counts).



--- HAM3 ISI ---

	9-Apr	18-Apr	diff
H1	-300	   -465	-165
H2	  175	     410 	  235
H3	  417	   -25 	-442

V1	-192	 -710	-518
V2	-450	 -430	    20
V3	  275	  290	            15

These numbers are much smaller than the numbers for HAM2.

---- punchline here is that this shows that changing the payload one HAM2 did change the position of the ISI table while it was locked.




----
Attached is a graphic of the table rotation, for HAM2 and HAM3, as I understand it.  Arrow length corresponds to the change, and can be compared between HAM2 and HAM3.

It is not occulting the POP-ALS beam path.

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.