- SUS cartridge installed in BSC6 yesterday. SEI still has work to do (undressing cartridge, plumbing, cabling, HEPI dial indicator, assess level of support tubes)
- Installation of OMC MC tube
- CP1 and CP5 filled by PraxAir
- Sno Valley visits
- Stoneway Electric visits
- Dust monitors: #2 (EndY?) disconnected, unsure why
- Air handler at MY alarmed, possibly due to seasonal changes (no chilled water flowing at MY)
- CDS: Many reboots at BSC8 and BSC6
- OSB doors locked at 1600

The h2psl0 front end models were restarted by Michael, Jim and Vern.

The latest ISI model (and associated C code) were built using the latest trunk 2.5 by Dave and Vincent. This code was installed on h2seib8, and the original HEPI code was also started (test models from yesterday were removed).

Here are ResourceSpace links to four collections from yesterday's cartridge installation at EY.

** Part One -- Preparations
** Part Two -- Locking the Quad
** Part Three -- Flying the cartridge
** Part Four -- Landing the cartridge

You might need to sort the collections by date once or twice to see the contents in the proper order. Elsewhere in RS you might find better shots of the uncovered transmon than the video screen shots you'll see in the Part I of the collection above.

Attached are plots of dust counts > .5 microns for April 2, 2012. Note that the dust monitor at location 2 at end Y (H0:PEM-EY_DST2_5) has lost communication. I have included a plot of its mode (H0:PEM-EY_DST2_MODE) to show when.

First thing this morning, the Apollo crew headed down to Y-end to remove the man-lift that Dale used for filming the install. The engine hoist was moved from the northwest corner of the chamber cleanroom to a spot by the termination slab. 

In addition, the following items were agreed upon in a brief meeting:
-Remove jacks from chamber cleanroom (~03 April 2012, Apollo)
-Move SEI masses to E-module (~03 April 2012, Apollo)
-Remove loose vacuum line (~03 April 2012, Kyle)
-Move test stand to termination slab (~03 April 2012, Apollo)
-Assemble and customize cart for IAS (~06 April 2012, Jodi/Apollo)
-Remove CPStat from Test Stand cleanroom (At Bubba's discretion)
-Reinstall curtains on Work Space cleanroom (At Bubba's discretion)
-Move garbing/staging cleanroom to southeast corner of chamber cleanroom (At Bubba's discretion)
     *Note-This will clear the way for setting the ISCT table.
-Move TS and WS cleanrooms back into usable configuration (At Bubba's discretion)
-Re-clean cleanrooms (~05 April 2012, Tech Cleaning Crew)
-Remove appropriate port covers from south door (At Bubba's discretion)
     *Note-Need info from ISCT to make an informed decision.

- Preparing for the cartridge install at BSC6, led by Hugh R.
	- Suspensions Locking down
	- TMS being covered by a sock
	- EE guys modifying field connectors
	- Overall meeting to determine readiness
- Cartridge Landed
- PSL Table arriving today from Pacific Cascade Trucking.
- Carbon optical lever giraffe arrived from Aeroshear. 
- Sno Valley came to work on chillers (Ski)
- NorthCoast here for Ken
- DAQ cabling and hardware being rechecked at BSC8 by CDS and reboot of SEI and SUS

This report is for 02 April. The doors were removed and the support cleanrooms were moved into place. The support table was extracted and preserved clean. The viton rim was installed on one dust barrier and started on another. 

Dave, Jim and Rolf
We tested the inclusion of the DACKILL part in the user model. We created two test user models which we ran in place of h2hpiitmy and h2isiitmy on h2seib8. The models drove adjacent DAC channels. These channels were routed to unused ADC channels on h2susb478.
Initial tests showed problems which Rolf quickly fixed in trunk/ branch 2.5
we have left h2seib8 running the test models in preparation for running the new ISI model tomorrow.

Apollo Crew-Bubba Randy Mick Mark Scott LIGO-Jodi Jim Betsy Mitchell Travis JeremyB  Film Crew--Dale!

No real issues to report.  A little longer than we expected on the Cleanroom lift process and we had some resistance when pulling the last Alignment Pin.  But it is in place, torqued down and the Chamber is secure.

Thanks to all for their great patience and attention to detail.

Unusual HF resonances/noise were observed on the transfer functions recently measured on HAM-ISI Unit #4.

Multiple configurations were tested:

1. Initial Configuration: Top Mass Sitting on 3x thin Washers, one of them was mistakenly set on an optical table track (we found the washer bent) - Balancing Masses (5kg and 10kg) stacked on thin washers too.
2. Top Mass Sitting on 3 Thicker washers instead of the thin ones. Same configuration (thicker washers) for the 5kg and 10kg balancing Masses.                        -> The unusual 126Hz and 160Hz resonances are pushed towards ~195Hz, where we saw them on the previous Units. 
3. A bolt, and its washer, that were sitting in a vertical hole of corner #3 GS13's door were removed                                                                                                -> No Noticeable Effect
4. A cable, which was possibly rubbing, was set in another position                                                                                                                                                    -> No Noticable Effect
5. The washers set under the balancing masses were removed                                                                                                                                                         -> This considerably reduced the unwanted HF resonances/noise

A presentation for the results of each step is attached.

Transfer function measurements are running overnight on the ISI in its latest configuraton.

Routed field cables to BSC6 chamber next to appropriate feed-thru. SEI cables were connected to feedthru (ISI Coil Driver, Trillium T240, GS-13s, and L4C). SUS cables routed to chamber but not connected to feedthru.

Today, the sea container holding the H1 PSL laser (now intended for LIGO India) arrived and was unloaded at the Y-mid station (thank you RodneyH, Mark(Apollo) and MarkL).

There are four large wooden crates (one smaller than the other three) that are now stored in the VEA (see attached photo).

Our German colleagues are expected to arrive on April 23 to begin the process of moving the H2 PSL to the H1 Laser Area Enclosure.
At that time, they may open some of the crates to retrieve needed components.

They are checking on the ability to stack the crates, so we will hopefully be able to compact the load for long-term storage.

Please contact me or Michael Rodruck if the boxes need to be moved.

All five FE cores crashed at 11 mins past midnight Sun 1st April, this is not an april fools joke.

here is the dmesg capture before we reboot the machine.


[1426964.148086] h2pslfss: ADC TIMEOUT 1 31229 61 31293
[1426964.148088] h2psliss: ADC TIMEOUT 0 31229 61 31293
[1426964.148090] h2pslpmc: ADC TIMEOUT 2 31229 61 31293
[1426964.148092] h2psldbb: ADC TIMEOUT 3 31229 61 31293
[1426965.146334] h2ioppsl0: timeout 0 1000000 
[1426965.146339] BUG: unable to handle kernel NULL pointer dereference at (null)
[1426965.146341] IP: [] fe_start+0xe32/0x214e [h2ioppsl0]
[1426965.146349] PGD 0 
[1426965.146350] Oops: 0000 [#1] SMP 
[1426965.146351] last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:2b:01.0/class
[1426965.146353] CPU 1 
[1426965.146353] Modules linked in: h2psldbb h2pslpmc h2pslfss h2psliss h2ioppsl0 open_mx mbuf
[1426965.146356] 
[1426965.146358] Pid: 0, comm: swapper Not tainted 2.6.34.1 #6 X8DTU/X8DTU
[1426965.146359] RIP: 0010:[]  [] fe_start+0xe32/0x214e [h2ioppsl0]
[1426965.146364] RSP: 0018:ffff8801beca7698  EFLAGS: 00010092
[1426965.146365] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000011e
[1426965.146366] RDX: 0000000000023c56 RSI: ffffffff81789ffd RDI: ffffffffa00311f2
[1426965.146367] RBP: ffff8801beca7ee8 R08: 000000007ffffff0 R09: 000000000000000a
[1426965.146368] R10: 0000000000000006 R11: 00000000ffffffff R12: 0000000000000000
[1426965.146370] R13: 0000000000000000 R14: ffffc900118d6000 R15: 0000000000000040
[1426965.146371] FS:  0000000000000000(0000) GS:ffff880001e20000(0000) knlGS:0000000000000000
[1426965.146372] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[1426965.146373] CR2: 0000000000000000 CR3: 0000000001a09000 CR4: 00000000000006e0
[1426965.146375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[1426965.146376] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[1426965.146377] Process swapper (pid: 0, threadinfo ffff8801beca6000, task ffff8801bec7aac0)
[1426965.146378] Stack:
[1426965.146379]  0000271700002711 0000271700000006 000000010000290b 0000000200000003
[1426965.146380] <0> 0000003500000003 ffffc900118d7034 ffffffffa0033a80 0000000000000000
[1426965.146382] <0> 0000000000000000 ffffc900118bc000 0000000400000000 00000000000007f8
[1426965.146384] Call Trace:
[1426965.146390]  [] ? cpumask_next_and+0x2c/0x39
[1426965.146394]  [] ? cpumask_weight+0xc/0xe
[1426965.146396]  [] ? find_busiest_group+0x36f/0x784
[1426965.146400]  [] ? timekeeping_get_ns+0x16/0x38
[1426965.146402]  [] ? apic_write+0x11/0x13
[1426965.146404]  [] ? lapic_next_event+0x10/0x14
[1426965.146406]  [] ? clockevents_program_event+0x75/0x7e
[1426965.146408]  [] ? tick_dev_program_event+0x37/0xf7
[1426965.146411]  [] ? enqueue_hrtimer+0x65/0x72
[1426965.146413]  [] play_dead_common+0x6e/0x70
[1426965.146415]  [] native_play_dead+0x9/0x20
[1426965.146417]  [] cpu_idle+0x46/0x8d
[1426965.146422]  [] start_secondary+0x192/0x196
[1426965.146423] Code: 00 8b 42 24 83 c8 01 89 42 24 8b 95 44 f8 ff ff 31 c0 8b b5 8c f8 ff ff e8 2a 13 00 00 48 8b 05 8f a7 00 00 48 c7 c7 f2 11 03 a0 <8b> 30 31 c0 e8 13 13 00 00 48 8b 05 78 a7 00 00 8b 00 66 85 c0 
[1426965.146433] RIP  [] fe_start+0xe32/0x214e [h2ioppsl0]
[1426965.146437]  RSP 
[1426965.146437] CR2: 0000000000000000
[1426965.146756] ---[ end trace d3abcc5123271f5d ]---
[1426965.146757] Kernel panic - not syncing: Attempted to kill the idle task!
[1426965.146758] Pid: 0, comm: swapper Tainted: G      D    2.6.34.1 #6
[1426965.146759] Call Trace:
[1426965.146761]  [] panic+0x73/0xe8
[1426965.146764]  [] do_exit+0x6d/0x712
[1426965.146765]  [] ? spin_unlock_irqrestore+0x9/0xb
[1426965.146767]  [] ? kmsg_dump+0x115/0x12f
[1426965.146769]  [] oops_end+0xb1/0xb9
[1426965.146772]  [] no_context+0x1f7/0x206
[1426965.146774]  [] __bad_area_nosemaphore+0x179/0x19c
[1426965.146776]  [] bad_area_nosemaphore+0xe/0x10
[1426965.146778]  [] do_page_fault+0xff/0x210
[1426965.146780]  [] page_fault+0x1f/0x30
[1426965.146784]  [] ? fe_start+0xe32/0x214e [h2ioppsl0]
[1426965.146788]  [] ? fe_start+0xe24/0x214e [h2ioppsl0]
[1426965.146791]  [] ? cpumask_next_and+0x2c/0x39
[1426965.146793]  [] ? cpumask_weight+0xc/0xe
[1426965.146795]  [] ? find_busiest_group+0x36f/0x784
[1426965.146797]  [] ? timekeeping_get_ns+0x16/0x38
[1426965.146799]  [] ? apic_write+0x11/0x13
[1426965.146800]  [] ? lapic_next_event+0x10/0x14
[1426965.146802]  [] ? clockevents_program_event+0x75/0x7e
[1426965.146804]  [] ? tick_dev_program_event+0x37/0xf7
[1426965.146806]  [] ? enqueue_hrtimer+0x65/0x72
[1426965.146808]  [] play_dead_common+0x6e/0x70
[1426965.146810]  [] native_play_dead+0x9/0x20
[1426965.146811]  [] cpu_idle+0x46/0x8d
[1426965.146813]  [] start_secondary+0x192/0x196
controls@h2psl0 ~ 0$ 

Attached are plots of dust counts > .5 microns.

We locked up TMS. The transport restraint chains/turnbuckles look wimpy, but  when you push TMS, it won't budge at all. It feels totally solid.

Some of the eyebolts were too big for the hook to fit (see the third picture) and we needed to use the screw part of the eyebolt.

One real snag was that we couldn't use the new ISC table protection plates as they  interfered with transport restraint structure. So the table is still protected by foils (first and second picture).

Once Doug IAS/TMS finished what they could with the LASER Fiber etc, SEI headed in to lock down the ISI and remove the Keel Mass.  We pulled cable from the Feedthrus back to the ISI on the West end to give access to pull the Mass down.  TMS was anxious to get back in to lock down so we'll complete cable securing Monday and continue Cartridge Install steps.

Once TMS is secure, SUS is on tap for lock down and vibration absorbers.

EE has pulled cables and is working their way to the chamber.  FClara wants all day Monday to get the cable to the Feedthrus so Cartridge flight may need to wait for that.

Two weeks ago, we searched for ground loops on BSC6. We found some but we will really chase them after the cartridge installation due to the limited accessibility of the ISI on its stand at EY.

The ISI cabling drawing is D0901301.

At the feedthroughs, we realized that the pin 13 of the 25pin connectors were grounded (except T240 2 and 3 - Need to be rechecked). It seems the grounding is realized by the pods (see LLO alog 2822) We have to wait the cartridge installation to do measurements on our pods.
At the interface chassis, only the pin13 of the L4C 2-3 cables are grounded.

We opened 4 connetors on both ends of 2 in-air cables (L4C 1 and 3)

L4C - 1 cable (grounded at one end (by the pod)):
At the feedthrough connector: the back-shell is not connected to the shield and pin 13 is disconnected.
At the interface chassis connector: the back-shell is connected to the shield and pin 13 is disconnected

L4C - 3 cable (grounded on both ends - pods and chassis)
At the feedthrough connector: The back-shell is not connected to the shield and pin 13 is connected to the shield
At the interface chassis: The back-shell is not connected to the shield and pin 13 is connected to the shield.

The in-air cables are not identical (CPS in air cables used for the geophones? That's would explain why gender changers were installed).
If the shields are grounded at the pod:
- At the interface chassis, pin 13 should not be connected and the back-shell should not be connected to the shield
- At the feedthroughs, the shield should be connected to the pin 13 and the back-shell shouldn't be connected to the shield

We projected the 808nm beam from the IR collimator with the latest adjustment to the collimator optics, but were not successful in propagating the beam through to the detectors. The beam expands out too quickly from the secondary telescope mirror. We need to more closely mimic the IFO beam waist size and divergence. I believe this will require a custom beam expander with an adjustable focus. The laser wavelength and power seem to be adequate. We got close, but no cigar.

I left the ETM lightly on its bottom stops only with First Contact in place and metal covers on.

The following activities took place yesterday in preparation for cartridge install:
-BSC flooring hardware was installed
-Hand rails were removed from the work platforms
-Chamber cleanroom was lowered
-A manlift was craned across the beamtube for Dale's use
-Upper level garbing/staging cleanroom was moved into place