New SDF Overview screen

I have modified SDF_OVERVIEW.adl to modularize each node (using composite objects calling a new SDF_NODE.adl file)

Following the guardian overview scheme, the nodes are arranged by chamber/location or by subsystem. A link to the original screen has been added above the legend box.

 

Started stopped EY Beckhoff SDF systems

I restarted h1sysecaty1plc[1,3]sdf following this mornings PLC restarts at EY. Instructions on how to do this are now posted in the wiki"

RestartBeckhoffSDFSystems

fiber feedthroughs for HAM6

Terry, Alvaro, TJ and I tested the fiber feedthroughs after bagging up enough parts in the optics lab to create space on the table. 

We used 1064nm light coupled into our class B fiber to test the feedthroughs and the class A fibers which TJ and Alvaro placed on the VIP yesterday. 

We measured 92% transmission through the feedthrough SN8.  We connected this to the fiber SN6 which Alvaro and TJ had connected to the CLF collimator, we measured a total transmission of fiber SN6 + feedthrough SN8 of 82%.  (So the transmission of fiber SN6 is 89%)

Second we tested feedthrough SN9, with a transmission of 84%, and plugged this into fiber SN7 which is routed to the green collimator on the VIP, and measured a transmission of 87% (total transmission of feedthrough + fiber is 73%). 

I've added these results to E1700235 and created version 7.  

Vented X-End Volume

Measured the dew point for the purge air at -41.5 ^oC, also started removal of IP12.

Adding Viton Beneath Balance Masses of H1 OPO (an OPOS) Reduces Broadboard Bending Mode Qs by a Factor of 2-3

Á. Fernández, J. Kissel, T. Shaffer

Álvaro, T.J. and I B&K hammered the optical parametric oscillator suspension's (OPOS) fully-payloaded bread board today, both with and without viton beneath its balancing masses. The reduction of bending mode Qs was about a factor of 2 to 3. Not very impressive -- my feeling is that we're either (a) putting viton where there is little bending, and/or (b) the balance masses do not provide enough moving mass at these mode frequencies to really suck out the mode energy through the viton.

I've not been tied close enough to this suspension to know if there is further action / improvement to make or take. Are there specific requirements we're trying to meet? Comment below if you have.
(Note, these results show that traditional, yet often broken, requirement of "Anything attached to the HAM-ISI must have its first bending mode resonances above 150 Hz" has been meet. Also, the addition of viton does not and will not have any affect on what ~1 Hz ISI - OPOS plant interaction issues Arnaud saw in LLO aLOG 37394.)

I attach the transfer function results.

We struck the platform vertically down at the outer edges, in the +Transverse corner and in the +Longitudinal corner (see E1700390 and/or G1300086 for basis definitions), and measured the response with the usual three-axis accelerometer. I only show the vertical response to each vertical excitation. 

Stay tuned for pictures. 

I attach the raw data (.pls files), the exported data (.txt files), and the script used to analyze the data.

Started pump down of Vertex volume

Before beginning the rough pumping of the Vertex volume this morning I sprayed helium around to North door's periphery and filled test slots to check for any significant outer O-ring leaks.  We have been pumping the annulus volume since yesterday via a turbo mounted locally at the pump port which is backed be the leak detector.  

~1030 hrs. local -> began roughing.  

1700 hrs. local -> Isolated pumps from Vertex volume via closing the Turbo header isolation valve, Safety Valve and 10" gate valve -> We will resume pump down in the morning.  

70W progress Thurs 22

Maik, Jason, Matt

 

Semi frustrating day today. However we have:

• rewired the additional flow sensors and confirmed that they now readout.
• connected up the frankencable and the associated power meter and PD and confirmed that everything reads out in Beckhoff
• Hooked up the FE pickoff and confirmed it reads out in Beckhoff.
  • We could not connect the pickoff into the FE, as at LHO, both EOM ports are currently "connected", which was not the case at AEI or LLO (we used the non-used EOM port for the installs at the other sites). We (Maik/I) need LHO PSL people to decide if both are being used or if one is just a bonus that we can actually use, or perhaps we can try to use the AOM port.

 

We also could not test the mechanism for the new external shutter, as the mechanism is currently just bare wires and so we need to get the pinout to wire up a connector (this wasnt the case at LLO as it already had the connectors wires)

And we are having the issues with the diode chiller that we still havent been able to rectify.

   The new diode chiller could be run from local control with no apparent problems. However, it would not start from Beckhoff. It appeared to Beckhoff that the chiller was still on. Several things were tried but could not get the chiller to start from Beckhoff. 

    This morning, the diode chiller controller from the old chiller(Gromit)was installed in the new chiller (Wallace). On power up, the diode chiller started without command input, which it should not do. We stopped and started both chiller from Beckhoff several times and both appear to be working correctly.

  I will contact the manufacture of the faulty controller for repair or replacement.    

h1ecaty1 EPICS IOC not responding

looks like all slow controls epics channels from h1ecaty1 stopped working at 15:55 PST. Unless anybody needs these channels we will wait until tomorrow to restart.

Restarted.

EY ECAT PLC1 and PLC3 SDF appear crashed. I don't know how these get restarted.

Shift Summary - Day

TITLE: 02/22 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC

STATE of H1: Planned Engineering

INCOMING OPERATOR: None

LOG:

16:00 (8:00) Start of shift

16:18 (8:16) Maik to laser enclosure

16:26 (8:26) Bartlett swapping out laser chillers

16:52 (8:52) Corey to LVEA -- grab a screw

16:56 (8:56) Corey back from LVEA

17:02 (9:00) Ed and Fil to EX -- work on safety system

17:05 (9:05) Gerardo to LVEA -- retrieve items

17:05 (9:05) TJ to Optics Lab -- VOPO work

17:14 (9:14) Gerardo out of LVEA

17:14 (9:14) Gerardo to End-X

17:17 (9:17) Bartlett to LVEA -- Getting parts

17:24 (9:24) Jeff to Optics Lab -- VOPO work

17:25 (9:25) Jason to PSL enclosure

17:28 (9:28) Chandra to Mid-Y

17:30 (9:30) Richard to HAM6 -- put up warning signs

17:35 (9:35) Jeff and TJ out of Optics Lab

17:35 (9:35) Jeff and TJ to End-Y -- pick up component

17:36 (9:36) Bubba and Chris to End-X -- swapping batteries, straightening up

17:38 (9:38) Ed and Fil back from End-X

17:47 (9:47) Richard out of HAM6

17:48 (9:48) Bartlett out of LVEA

17:49 (9:49) Alvaro to Optics Lab

18:05 (10:05) TJ and Jeff back from End-Y

18:05 (10:05) TJ and Jeff to Optics Lab

18:29 (10:29) Nutsinee and Sheila to Optics Lab

18:40 (10:40) Nutsinee out of Optics Lab

18:44 (10:44) Corey to SQZ Bay -- grabbing panel

19:17 (11:17) Sheila out of Optics Lab

19:18 (11:18) Fil and Ed to End-X

19:20 (11:20) Keita Georgia and Betsy back from End-Y

19:25 (11:25) Rick and Travis to End-Y -- PCal work

19:39 (11:39) Jeff out of Optics Lab

19:42 (11:42) Bartlett back from chiller swap

19:59 (11:59) Rick and Travis back from End-Y

20:00 (12:00) TJ and Alvaro out of Optics Lab

20:02 (12:02) Fil and Ed back from End-X

20:02 (12:02) Richard to LVEA -- look at squeezer table

20:04 (12:04) Jason and Maik to diode room

20:13 (12:13) Jason and Maik out of diode room

20:22 (12:22) Nutsinee to ISCT6

20:32 (12:32) Sheila and Terry to Optics Lab

21:41 (13:41) Peter to Diode Room -- move equipment

21:42 (13:42) TJ to Optics Lab -- VOPO work

21:44 (13:44) Sheila Georgia Salvo Terry to Optics Lab

21:45 (13:45) Nutsinee out of ISCT6

21:46 (13:46) Peter out of Diode Room

22:02 (14:02) Ed and Fil to End Stations -- set up emergency stop buttons

22:04 (14:04) Rick and Marek to LVEA -- grab headsets

22:12 (14:12) Georgia and Salvo out of Optics Lab

22:30 (14:30) Nutsinee out of ISCT6

22:35 (14:35) Corey to SQZ Bay -- Deliver panels

22:43 (14:43) Gerardo back from End-X

22:50 (14:50) Corey out of SQZ Bay

23:08 (15:08) Chandra to Mid-Y

23:14 (15:14) Ed and Fil back from End Stations

23:29 (15:29) Ed and Fil to HAM6 -- high voltage cabling

23:50 (15:50) TJ out of Optics Lab

00:00 (16:00) End of shift

Thursday Vent Meeting Minutes

Corner:

PSL going well, working on wiring

CER ISC cabling almost finished

ISCT6 cable connection finished

VOPO balanced and cabled

HAM6 feedthru proof, function testing

EX:

Staging at End-X planned for upcoming week

EY:

Installs at End-Y planned for next week

PCal alignment check complete

MY:

MCE electrical being finished, will begin testing

HAM6:

No in-chamber work during pump down

VOPO install Monday

Tuesday Maintenance:

SDF work complete

ISI Model

SUS EY RCG Boot

Framewriter work

DAQ restart

Swap PSL Chillers

   Swapped the running chiller (Gromit) with the backup chiller (Wallace). No problems encountered with the swap or during the initial run-up. Ran Wallace for about 20 minutes to due leak checks and top up the reservoirs. The chiller is off right now, and is set for remote start control. 

   Will prep Gromit for warn stand-by backup.  

   Close WP #7338    

Using another beam on EY OPLEV restores ALS retro-reflection (Georgia, Betsy, Keita)

After Betsy's observation that a wrong beam might have been used for EY oplev (alog 40653), she and Georgia went into the chamber and faked the "correct" EY alignment by pushing the optic using EQ stops until the right beam is on oplev. It's not quite centered but it's not very far. The OPLEV SUM dropped to about 11k.

After this we turned on the ALS laser, and got retro-reflection well within the adjustment range of TMS OSEM. It seems like Betsy found the right beam for EY oplev.

When the REFL was on ALS REFL PD, TMS sliders were P=-88 urad, Y=-168 urad (full range is +-298 for P, +-608 for Y).

Rick and Travis are going back to EY to see if this EY angle is also better for PCAL. IF that's the case EY needs to be properly realigned (not faked by EQ stops but by adjusting the cage etc.).

BSC1 ITMY OSEM signal fix, logistical details

This morning, Kyle and Bubba finished removing the door to BSC1.  I entered the chamber and began poking the ITMY R0 Right BOSEM cable from the OSEM connection out through the structure to the Table Cable Bracket.  No change.  I then also tried all of the following which produced no improvement to the spectra:

- Reseating the cable in the Table Cable Bracket

- Unbundling the cables that were secured to the upper structure leg

- Reseating the cable on the BOSEM itself

- Swapped the RT cable with the Side - problem went away - which meant that the problem was the BOSEM itself.

Removed BOSEM from structure and attempted to find short on the unit - no luck.  Swapped unit which meant removing it from it's adjustment bracket and rebuilding before reattaching.

Once back on the structure found it was OK.  Set OLV and 50% flag setting.

Cleaned flooring, removed tools, looked for cable routing issues in case I undid some other nice work.

Left chamber.  Kissel ran a few TFs which showed healthy.  Fil checked for HIPOT on the ESD connection and started another rounf of ground loop checks.  Tacked up door.

 

Pictures of BOSEM to aide discussion.