RO Issues Again

Woke up early this morning to RO alarms. Apoligizes to everyone else that got those alarms in the middle of the night. Onsite now dealing with the issues. Yesterday, the 480v water heater used to pre-heat the water before it enters the RO had a major leak. I disabled and by-passed the heater so we still have water, however, the RO has to work much harder to be any where near as efficient as it was before, which was getting questionable at best. It is OLD.

I have a new RO that I will install as soon as I have all of the electrical. I am also following up with the water heater manufacture to remedy that issue. 

HAM5 Components B&K Hammered

J. Kissel, H. Radkins

Hugh and I hammered essentially everything big bolted to the HAM5 table this afternoon, including: 
    OFI Cage (with new baffling?)
    OFI Side Baffle (drawing??)
    SRM Cage (with new Venetian Baffles D1700257)
    SRM Table Baffle (D1700270)
    All 3 HAM ISI Front Guard "Beard Cover" Baffles (D1700265)
    SR3 Table Baffle (D1700270)
    SR3 Cage (with new Venetian Baffles D1700239)
    SR3 TCS ROC Heater (D1500258)
    ZM2 Cage + Spacer (D1600094)
    ZM2 Septum Window REFL Dump + Spacer (Standard ISC V-Dump & Post + D1700041)

Attached are all the pictures. 

Analysis will come, but my first impression from the raw data (without comparing to any previous data):
- The SR3 Cage has several High-Q features at ~300-400 Hz
- The ZM2 Cage and ZM2 REFL Dump structures have High-Q features at ~120 Hz.
- All other stuff is well-damped.

Notes: 
- When hammering the OFI Side Baffle, we left the accelerometer in the same location as when hammering the cage itself.
- When hammering the SRM Table Baffles and the Plus X and Middle Beard Baffles, we left the accelerometer in the same location.
- When hammering the SR3 Table Baffles and the Minus X Beard Baffle, we left the accelerometer in the same location.

GV4 shroud work

This afternoon Ken disconnected the wiring from GV4 motor and encoder which caused the valve to show a yellow state on MEDM. The electrical disconnect on side of valve was already turned OFF and locked - Ken verified no current and I officially LOTO. Mark and I pre-assembled shroud and hope to test fit tomorrow morning on GV4 before crane use at HAM 4. Ken took notes on wiring configuration and will need to come back to re-wire.

GV4 annulus pressure spiked during this activity, likely from being bumped. We are reminded to use extreme caution around this system.

HAM2 baffle checks

Today I checked the status of the HAM2 baffles in order to get the table close to a final payload state in prep for the final ISI balance/TF check still due.  I finished reattaching the PR3 baffle and it's SHCS caps, and the dogs of the SUS that were removed due to the targeting system.  Cheryl still as some work in there, as well as Kissel's intended B&K hammering there tomorrow.

TBC...

Shift Summary - Day

TITLE: 12/06 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
SHIFT SUMMARY:

• The tone for the day was keeping track of card swipes and the ongoing issue of folks still not using proper protocol even after the recent events.
• STOP WORK order was lifted and a limited list of names for those authorized to transition LASER conditions was posted on the gowning room door to the LVEA.

LOG:

16:00 LVEA is LASER Safe

16:02 silenced annulus pump alarm - PT100, 140, and 170

16:22 Peter into LVEA

16:26 Observed Ken and Karen in the LVEA

16:32 Betsy out to LVEA for parts

16:35 New Operator, Yannick LaCoeuche in control room

16:43 Peter out

16:44 Fil and Jeff out to HAM4 checking for ground loops

16:53 Betsy out

16:58 Hugh to HAM2 to work on CPS

17:08 TJ into optics lab

17:18 Hugh out

17:31 STOP WORK order was lifted and a limited list of names for those authorized to transition LASER conditions was posted on the gowning room door to the LVEA.

17:40 Jason out to biergarten

17:51 Fil and Jeff done at HAM4 and moving to HAM3.  HAM3 suspensions taken to SAFE (non-damped) for ground loop checking.

18:09 Terry going out to squeezer bay

18:10 King Soft on site to service the pump room

18:19 Ken to end stations for E-Stops for LASER safety interlock system.

18:20 Kyle into LVEA

18:21 N. into squeezer bay

18:46 Richard out to HAM3

18:51 Richard out

18:56 Fil out temporarily

19:00 observed 3 people working at HAM5 (Jim, TJ, Jason)

19:07 Richard to CER to power cycle power to harmonic generator

19:12 Richard back

19:17 Betsy into LVEA either BSCs or HAM5

19:39 Travis heading out to LVEA to find Betsy.

19:45 Travis out

20:00 Betsy out

20:25 Sheila into LVEA

20:27 Jason, TJ and Jim out

20:30 Fill out for lunch

20:37 Sheila out

20:54 Ken done at EX and heading to EY

20:44 N out

21:06 Mark (Apollo) into LVEA to look for Chandra

21:05 Ken into EY

21:13 Mark out

21:19 Ken out of EY

21:30 Betsy into LVEA

21:28 Marc (CER) and Cheryl into LVEA‌ (Cheryl at HAM3)

21:30 Jason and TJ out to LVEA/TCSX area

21:32 Marc out

21:37 N into LVEA

21:41 Marc back into CER

21:40 Betsy out

21:49 Travis heading out to the biergarten to help Jason and TJ with TCS

21:49 Kyle into EX

21:51 Sheila heading to work in the optics lab and LVEA. (she'll notify me when she's finished going back and forth)

21:53 Rakesh int0 LVEA (liason needs to remind him of protocol) (he's with Chandra)

21:55 Marc out

21:56 Kyle back from EX and heading to EY

22:04 HAM2 suspensions into SAFE (undamped) for ground loop testing

22:05 Peter King into LVEA (Jeff B is with and didn't swipe)

22:18 Kyle back from EY

22:35 Sheila called to tell me she's turning on the lasers in the optics lab

22:44 Jeff K and Hugh out to HAM5 (B&K Hammering)

22:45 Jim out to HAM3

22:39 Ken into LVEA

22:48 Hugh into LVEA

22:48 Kyle called - "out of the LVEA for the day"

22:48 Terry out for meeting

22:50 N and Terry out for the weekly meeting

22:54 Mark D, Betsy, FIl and Travis out for the meeting

23:07 Jim is out for the meeting

23:07 Ken into LVEA

23:31 Ken out

23:33 Travis out to biergarten

23:33 TJ out to HAM5

23:33 Marc out to CER

23:35 Sheila out to optics lab

23:36 Jason out to HAM5

23:36 Peter into LVEA to help Fil with ground loop work

23:53 Uma and Rakesh out to LVEA to join Chandra by GV4

alog edit sequence which leads to "euro" characters being added to entry has been identified

Many of you have discovered that sometimes your alog entry is polluted with random characters when you press the space bar. The characters do sometimes vary, but the Euro monetary symbol is usually present, hence the euro label. Here is an example:

‌ 

The sequence which causes these characters to be added to your entry have been identified:

1. you are making your alog entry using the CKEditor option

2. you type a word which is not in the spelling checker's dictionary, and you stop typing at the end of the word and wait a while (several seconds)

3. the spell checker marks the word as incorrectly spelled by underlining the word with a squiggly red line

4. you press space bar and the characters appear, which you then have to delete before continuing with your entry

Here is an example, colour‌  favour‌ aluminium‌ 

DAY Operator Summary

DAY Shift:  16:00 - 0:00utc  

HAM4 ISI & BSC3 ISI were locked back up this afternoon (whiteboard updated).

Day's Activities:

• LVEA Laser SAFE
• 14:17 LVEA cleaning (Christina)
• 15:23 Elec outlets for CP1/2 (Ken)
• 16:22 Portapotty service
• 16:39 Escorting Pest Guys in LVEA (Soike)
• 16:40 Dust Monitor FAMIS tasks in LVEA/End Stations (Bartlett)
• 17:00 Amber begins 1 (of2) Virtual Visits from Dartmouth, Nova Scotia
• 17:03 LN2 Truck heading down Y-arm, probably CP7 at EY.
• 17:48 Paradise water
• 18:03 HAM5 cleanroom for clean-up (TJ)
• 18:08 LN2 Truck heading to EX's CP8
• 18:00 IM3 & IM4 bias work (Cheryl)
  • 21:50 Starting afternoon work (Cheryl & Sheila)
• 18:24 Providing viton for IO & CPS work (Hugh)
• 18:30 OFI work at HAM5 (Gerardo)
• 18:30 PSL FAMIS tasks (Jason)
• 18:38 EY Cleaning (Karen, Vanessa)
• 18:44 - 21:00 BSC first contact (Betsy, Travis, [3] Indian visitors)
• 19:08 Turning OFF Pcal lasers (Rick S., Evan, Darkhan)
• 19:18 OM1 (@HAM6) tripped...not sure why...redamped
• 19:45 - 19:54 Laser stickers in LVEA (Peter)
• 21:07 ITMx ISI TFs to begin:  NO OTHER ACTIVITIES IN BSCs!
• 21:55 LVEA Walk-thru (Bartlett, Peter, Richard, Corey)
• 22:09 (in/out few times) 45MHz investigation (Marc)
• 22:12 - 0:02 OFI work at HAM5 (Gerardo)
  • 23:06 Checking to see if needs another person (Peter)
• 23:15 Locking up ITMx & HAM4 ISIs (Jim)
• 23:41 Craning Leak Detector (~250lb) over Y-Arm (Kyle)
• 23:53 Gate valve shroud testing (Chandra)

H1 ISI CPS Sensor Noise Spectra Check - Weekly FAMIS #6927

All spectra appears to be normal in the hf area.

Shift Transition - Day

TITLE: 12/06 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    Wind: 8mph Gusts, 6mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.23 μm/s
QUICK SUMMARY:

 

IO HAM2 work, 5 Dec 2017

Work done today, 5 Dec:

• IM1: no change
• IM2: SiC baffle loosened and viton inserted, and baffle screws retightened
• IM3: tightened OSEM bracket bolts, and identified that the top OSEM bracket moved when I was tightening a lower OSEM bracket, recentered OSEMS, then reinstalled the SiC baffle with viton between the baffle and the IM tower
• Shift in top OSEM bracket while tightening the lower OSEM bracket suggests that the OSEM's had more than one stable position (since the top OSEMs remained stable after that shift), which would be an explanation for the alignment shifts seen during O2
• IM4: bias relief for pitch, reinstalled the SiC baffle with viton between the baffle and the IM tower
• Possible mechanical short in the SiC baffle to the IM tower, even after adding viton
• The inner SiC baffle on IM4's baffle is in direct contact with the EQ stop viton, which is a mechanical short, though possibly damped because the EQ stop bumper is viton

Plan for tomorrow:

• if possible in the morning, B&K all IMs

Info for tomorrow, 6 Dec:

• all IMs are ready to be B&K'd to evaluate the damping of the high Q resonant frequency
• on all IMs, the viton was inserted between the IM tower and the SiC baffle
• on all IMs, the bolts holing the SiC baffle have locking washers, though I am unaware of the benefit
• on all IMs, an unbalanced force on the 4 SiC attachment bolts and their locking washers may break the baffle, so please refrain from tightening those bolts if at all possible
• on all IMs, if it becomes necessary to tighten the SiC baffle attachment bolts to further damp the Q of the resonant frequency, do so with small adjustments that are spread evenly to all 4 bolts, to avoid putting uneven stress on the SiC baffle

- Cheryl, Sheila, Hugh

Belated LOG entry -> Ran Fume hood fan in OSB labs

12/4/2017 @ ~1330? hrs. local to 12/5/2017 ~1430? hrs. local

This is a known noise source when IFO is in a sensitive state (not currently applicable).

Corner station weather station reporting bogus outside temperatures

The corner station weather station is reporting bogus high temperatures (146F, 63C). These signals ramped up over the past week, please disregard this station for now.

LOTO GV4 for shroud test fitting

WP 7239

Today I locked out-tagged out GV4 in closed position (next to biergarten in LVEA) in preparation for testing fitting shroud assembly which requires removing power cables from motor & encoder  and thus temporarily killing power to valve. Ken can help with electrical. Mark can help with rigging and assembly. Need to operate west crane.

 

HAM5 OFI Update

(Peter K, Gerardo M)

All dog clamps holding the OFI spacer were re-torqued, due to finding one dog clamp loose.
AOSEMs were set on brackets and positioned to be close to center (per MEDM screen), all fastening components were tighten, set screws and adjustment collar screw, to hold them in place.
Next step is to run a transfer function to determine damping.

J. Kissel

Transfer functions look great:
- Suspension looks free
- Resonances are in the same place as they were before
- DC gain looks the same
- Qs of resonances are only slightly reduced, no danger of over-damping.

I'll take it!

Data lives here:
/ligo/svncommon/SusSVN/sus/trunk/OFIS/H1/OFI/SAGM1/Data/
2017-12-06_0012_H1SUSOFI_M1_WhiteNoise_L_0p01to50Hz.xml
2017-12-06_0012_H1SUSOFI_M1_WhiteNoise_T_0p01to50Hz.xml
2017-12-06_0012_H1SUSOFI_M1_WhiteNoise_Y_0p01to50Hz.xml
(not that it's still programmed for using OM1 as the readout chain. Eventually we'll have legit templates.)

ITMX ISI tfs look okay, ITMX & HAM4 ISIs locked again

I took some quick dtt tfs on ITMX today, because some of the long matlab tf infrastructure isn't working right now. I only took ST1 X,Y,Z,RX, &RY (I don't know what RZ would tell me better than the other dofs) tfs and looked at ST1-ST1 and ST1-ST2 tfs, I think this gives me enough data to compare to past tfs. First 2 plots are the ST1act to ST1l4 & ST1act to ST2gs13. Second two plots are the cartesian undamped tfs (for the same actuators and sensors) that we used to design the controllers on ITMX. I think they are in the same units, they look similar enough I think we can say ITMX ISI is free.

After finishing the ITMX tfs up, I went out and locked ITMX and HAM4. 

Monthly Dust Monitor Vacuum Pump Checks

   Check all dust monitor vacuum pumps and adjusted vacuum pressure where necessary. All temp checks are good. 

   The corner station pump is showing a bit of carbon on the muffler. Will continue to monitor soot on muffler and watch for pressure changes, that indicate the vanes are getting close to end of life. I have a rebuild kit on site for this pump. 

Pcal lasers shut down at both end stations in anticipation of in-chamber work.

RickS, EvanG, DarkhanT

At around 11:30 local time, we shut down the Pcal lasers at both end stations.

Shutter controls were set to local and the shutters closed.

Laser power supplies were switched off and the keys removed.  Keys are in the Pcal tool zip-lock bags on the shelf in the Pcal pylon at each end station.

Laser power supply and AOM driver modules were switched off (two rocker switches on the back side of module).

H1 SUS OM1 EPICs Infrstructure reverted from ZM2 temp setup to OFI temp setup

J. Kissel, B. Weaver

In prep for final in-air characterization of the OFI after alignment to the IFO and restoration of the eddy current damping magnets (a.k.a. "blunting" magnets), I've reverted the OM1 infrastructure -- the electronics readout, four-OSEM cable system temporarily covering all of the OMs, ZMs and the OFI -- to the previously commissioned OFI configuration. I reverted to the original values measured for the open light current ("voltage", OLV) in LHO aLOG 38994. The OSEM2EUL and EUL2OSEM matrices were re-installed using Matlab scripts described in LHO aLOG 39033.

Note, for future reference, the ZM2 open light current values were taken from LHO aLOG 39573.

Baffle Alignment Summary

A quick table summary of the alignment of the newly installed baffles that have apertures.

Suspension	Alignment Method	Accuracy
HAM2
MC1	Aligned with the beam during overall alignment.	2-3mm to center
MC3	Aligned with the beam during overall alignment.	2-3mm to center
PR3	Aligned by sight and checked by IO team with paper target.	~4mm
PRM	Used the acrylic target and then later checked okay with the beam.	2-3mm to center
HAM3
MC2	Aligned with the beam during overall alignment.	~5mm to center
PR2	Aligned with the beam during overall alignment.	~5mm to center
HAM4
SR2	Aligned with the beam during overall alignment.	~5mm to center
HAM5
SR3	Aligned by sight and checked with beam.	~4mm to center
SRM HR	Aligned with beam.	2-3mm to center
SRM AR	Aligned with beam.	~1mm to center
BSC1
ITMY Elliptical	Aligned using provided target.	~5mm
BSC2
BS HR & AR Elliptical	Aligned using provided target.	1mm
BSC3
ITMX Elliptical	Aligned using provided target.	~5mm

*All other newly installed baffles with any type of adjustment were aligned by sight.

I think that at some stage, someone should tie up this information with https://dcc.ligo.org/LIGO-E1700321 and https://dcc.ligo.org/LIGO-E1700341 for overall documentation.