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Reports until 11:54, Friday 14 December 2012
H1 CDS
david.barker@LIGO.ORG - posted 11:54, Friday 14 December 2012 (4932)
SEI HAM23 IOP Watchdog Change, add sush2a back to trip logic

WP#3605, userapps svn r3464

I modified the h1iopseih23 model to reconnect the WD signal from SUS H2A. This permits MC1 and MC3 HAM2 OSEM signals to trip the DACKILL on SEIH23, along with PR2 and MC2 from HAM3. The MEDM screen was also changed accordingly.

All models on h1seih23 were stopped and restarted. ISI was burt restored to its safe.snaps (note, there seems to be problems with ISI HAM3's safe.snap). HPI models dont have safe.snaps and were restored to the backup made at the time of shutdown.

H2 INS
jodi.fauver@LIGO.ORG - posted 07:49, Friday 14 December 2012 (4930)
BSC5 ICC
Yesterday, the Apollo finished wipe down, second vacuum, chamber FTIRs, and close-out inspection. Two doors were returned to the chamber, one torqued. This morning, the technical cleaning crew is doing first cleaning on the dome cleanroom. Once that is complete, the cleanroom will be moved over the dome and second cleaning will be done. The Apollo crew will move the dome spreader from the OSB to X-end and start torquing the remaining door bolts. After second cleaning, the dome will be cleaned. If time permits, we'll try for putting the dome on today. 
LHO VE
gerardo.moreno@LIGO.ORG - posted 22:52, Thursday 13 December 2012 (4929)
Stopped Pumping Overnight

Closed the O-ring valve and the gate valve @ the turbo overnight (closed at 19:45 local time), and I will restart pumping tomorrow morning.

H1 ISC
keita.kawabe@LIGO.ORG - posted 19:08, Thursday 13 December 2012 (4928)
REFL beam aligned to the first steering mirror in HAM1 (Deepak, JoeG, Cheryl, Keita)

Using the retro reflection from the surrogate PRM, we centered the IFO REFL beam on the first beam splitter (M14 in M1000313, 95% splitter) on HAM1 because there's no height adjustment for REFL path in HAM1.

The beam was centered (roughly) on the HR surface of the splitter, I didn't care to spread the decentering on HR and AR side due to an uncomfortable working position.

The beam dump was readjusted to receive the reflected beam off of M14.

The splitters and steering mirrors downstream was not aligned as there's no way I was able to see the beam with this tiny power.

LHO General
patrick.thomas@LIGO.ORG - posted 18:27, Thursday 13 December 2012 (4927)
plots of dust counts
Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 PM Dec. 12 to 6 PM Dec. 13. Also attached are plots of the modes to show when they were running/acquiring data.
Non-image files attached to this report
H1 SUS
mark.barton@LIGO.ORG - posted 17:09, Thursday 13 December 2012 (4926)
PR2 TFs
Mark B.

I was tweaking and testing Stuart's new script on PR2 and it seems to be running fine, so I'm letting it finish, and I'll keep an eye on it from home. It should turn off the measurement status indicator and reenable damping when it's done. 
LHO General
thomas.vo@LIGO.ORG - posted 17:05, Thursday 13 December 2012 (4925)
2012-12-13 Ops Summary
- Prax air delivery 
- Sno Valley to work on chillers
- Forklift training at 1:00 PM
- Cleaning of cleanrooms at XEnd
- SEI in HAM 1
- Mark B to run transfer functions.
H1 CDS
david.barker@LIGO.ORG - posted 16:50, Thursday 13 December 2012 (4924)
MX CP5 alarm reconfigured

a noisy signal for the MX CP5 LN2 level was causing constant alarms in the control room. I reconfigued the system such that the alarm will be raised only when the system is in alarm for 60 seconds.

ve.alhConfig file changed, HVE-MX:CP5_LT300 has COUNTERFILTER of 60. HSV for this PV set from MINOR to NO_ALARM.

H2 CDS
david.barker@LIGO.ORG - posted 16:47, Thursday 13 December 2012 (4923)
H2 DAQ is down

Today I turned the H2 fw0 system off. I used this system to test the reorganization of the raw minute trend files from one large directory to 256 directories depending upon the CRC8 check sum of the channel's name.

We are preparing H2DAQ for its move to the DTS system.

H1 SUS
betsy.weaver@LIGO.ORG - posted 13:26, Thursday 13 December 2012 (4916)
MC1/MC3 SUS remaining closeout work

Mostly for myself (and to keep track in the event some push out to a subsequent vent), the following are items SUS still needs to do in HAM2/3 before the chamber is officially checked off the install list.

To be done in the next day:

Tweek lower stage AOSEMs to 50% OLV

Swap PFA EQ stop tips with fluorel/glass tips

Install Vibration Absorbers

Lock all EQ nuts

 

Things we're pushing toafter the next vent in the new year:

Re-check heights of prisms to table surface

Perform B&K Hammer testing

Round of FC cleaning since duration of chamber-work exposure to MC1 and MC3 optical faces was many weeks (duplicating the LLO schedule)

Install PR3, PRM, and all associated install and testing steps, etc.  Balance of install/alignment procedure...

H1 SEI
hugo.paris@LIGO.ORG - posted 10:33, Thursday 13 December 2012 (4921)
HAM2-ISI - Mechanical Work

JimW, HugoP,

We continued payloading HAM2-ISI yesterday (12/11) morning to account for the absence of PRM. We put 166lbs of mass around PRM's future position. to do so we used:
- 2x50lbs
- 3x10kg 

The attached picture shows the layout we picked for the masses. It also shows the mass stack used to account for PR3's absence.

Non-image files attached to this report
H1 SEI
hugo.paris@LIGO.ORG - posted 10:14, Thursday 13 December 2012 (4920)
HAM3-ISI - Magnetic Coupling with RobertS's Experiment

We noticed sharp peaks on the ASDs measured with the GS13s of HAM3-ISI, since December 11th. The frequencies these peaks were observed were 3.5Hz, and 11Hz (see atachement).

Frequencies, and timing, correspond to Robert's injections for BSC1 magneting coupling tests. One of the coils used for this tests sits right next to HAM3 chamber. It is probably the one that causes the most coupling.

Robert's injections are 5 orders of magnitude above regular ambient magnetic field. The magnetic pickup seen on the GS13s of HAM3-ISI is no more that 2.5 orders of magnitude above seismic level. We are thus fairly confident that GS13s will not be impacted by the usual ambient magnetic field.

Images attached to this report
H2 INS
jodi.fauver@LIGO.ORG - posted 09:58, Thursday 13 December 2012 (4919)
BSC5 ICC
With the exception of 1/4 of the floor, wipe down was completed prior to Laser Safety Training at 2 pm yesterday.
LHO VE
gerardo.moreno@LIGO.ORG - posted 21:00, Wednesday 12 December 2012 - last comment - 10:53, Thursday 13 December 2012(4918)
Stopped Pumping Overnight

Closed the O-ring valve and the gate valve @ the turbo overnight (closed at 16:15 local time), and I will restart pumping tomorrow morning.

Comments related to this report
gerardo.moreno@LIGO.ORG - 10:53, Thursday 13 December 2012 (4922)

Pumping restarted today at 7:46 am.

LHO General
patrick.thomas@LIGO.ORG - posted 18:49, Wednesday 12 December 2012 (4917)
plots of dust counts
Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot from approximately 6 PM Dec. 11 to 6 PM Dec. 12. Also attached are plots of the modes to show when they were running/acquiring data.
Non-image files attached to this report
H1 SEI
hugo.paris@LIGO.ORG - posted 17:04, Wednesday 12 December 2012 (4915)
HAM3-ISI Unlocked

HAM3-ISI was unlocked uppon IO's request.

H1 PSL
michael.rodruck@LIGO.ORG - posted 16:35, Wednesday 12 December 2012 (4914)
Replaced water fittings

Ollie, Robert, Michael R

In an effort to mitigate table noise from the chiller we swapped the quick connect fittings on the oscillator manifold with barb fittings. Robert will post an aLOG later describing the status of this test in more detail. In the process we found/created a small leak in the return path valve in the crystal chiller line. This looked like it was coming from the threaded insert on the valve, so we replaced those. No leaks were found after.

H1 CDS
david.barker@LIGO.ORG - posted 16:08, Wednesday 12 December 2012 (4913)
restart of IM suspensions on h1sush2b

Following the mysterious crash of the SUS IM model yesterday at 12:40pm (looks like a Dolphin or timing error, SUS IM model froze up, IOP model has hugh timing error, DAQ status 0x4000), we just restarted both models on the h1sush2b front end (h1iopsush2b and h1susim). The user model was burt restored to the safe.snap. The user watchdog continues to be tripped, so zero DAC drive throughout this restart.

LHO General
corey.gray@LIGO.ORG - posted 16:04, Wednesday 12 December 2012 (4905)
Day Ops Shift Summary

Toward the end of shift I heard rumblings of rebooting HAM-AUX (requested by IO group & performed by Dave)

 

 

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