Displaying reports 70441-70460 of 83105.Go to page Start 3519 3520 3521 3522 3523 3524 3525 3526 3527 End
Reports until 16:40, Monday 28 July 2014
H1 AOS (AOS)
filiberto.clara@LIGO.ORG - posted 16:40, Monday 28 July 2014 (13029)
ITMY Arm Cavity Baffle photodiodes
Tested the forward voltage for the ACB photo diodes. 
BSC1 Flange F1-3C1 (air side).

Pin 1&2
PD forward voltage: 0.412V

Pin 4&5
PD forward voltage: 0.428V

Pin 7&8
PD forward voltage: 0.422V

Pin 10&11
PD forward voltage: 0.428V

All results within spec.

Filiberto Clara
H1 SUS
arnaud.pele@LIGO.ORG - posted 16:34, Monday 28 July 2014 (13030)
itmy tfs running overnight on opsws1
LHO VE
kyle.ryan@LIGO.ORG - posted 16:07, Monday 28 July 2014 (13028)
~1500 hrs. local -> Stopped baking RGA mounted at port X1-9 in the X-mid


			
			
H1 General
jeffrey.bartlett@LIGO.ORG - posted 16:00, Monday 28 July 2014 (13027)
Ops Summary
LVEA laser safe

08:55  Aaron – Going to End-X and to End-Y to check noise eater switch
09:01 Mitch – In LVEA working on ACB installation
09:13 Matt, Danny, & Gary – In LVEA gathering up tools for End-X close out
09:15 Manny – In LVEA to survey kill switches
09:33 Doug & Jason – ACB alignment Y-Arm 
09:34 Nathan – Laser work in Optics lab
09:40 Apollo – Pulling North door on HAM6 to pull leak check bung
10:08 Mike – Taking tour into LVEA
10:15 Andres – In the LVEA cleaning area working on contamination control assembly
10:30 Gerardo & Joe - Going to End-X for viewport survey
10:39 Matt, Danny, & Gary – Going to End-X to prep for chamber close out
11:18 Notified Kyle of alarm on IP-05
12:36 Test of Hanford emergency alert system
13:00 Filiberto & Manny – End-Y to pull PEM cables
13:10 Mitch & Travis – In LVEA for Y-Arm ACB installation work
13:31 Justin – End-X and End-Y for laser survey
13:37 Betsy – Working in Beer Garden to prep for BSC closeout
13:50 Gerardo – In LVEA west bay working on ionization experiment 
13:52 Paul & Jordan – Going to End-Y to take PEM measurements
14:34 Matt, Danny, & Gary – At End-X preparing for chamber close
15:50 Filiberto - Checking ACB photo diode 
H1 SUS
stuart.aston@LIGO.ORG - posted 15:35, Monday 28 July 2014 (13019)
HAM2 - MC1, MC3 & PRM (HSTS) M2-M2 & M3-M3 (lower stage) Phase 3a TFs are clear
After obtaining clear M1-M1 (top-top) TFs for HAM2 suspensions over the weekend (see LHO aLOG entry 12974), I've now processed data for lower stages as follows:-  

- MC1 M2-M2 undamped (2014-07-27_1090556791_H1SUSMC1_M2_damp_OFF_ALL_TFs.pdf)
- MC3 M2-M2 undamped (2014-07-26_1090419127_H1SUSMC3_M2_damp_OFF_ALL_TFs.pdf)
- PRM M2-M2 undamped (2014-07-26_1090421241_H1SUSPRM_M2_damp_OFF_ALL_TFs.pdf)

- MC1 M3-M3 undamped (2014-07-27_1090565498_H1SUSMC1_M3_damp_OFF_ALL_TFs.pdf)
- MC3 M3-M3 undamped (2014-07-26_1090427890_H1SUSMC3_M3_damp_OFF_ALL_TFs.pdf)
- PRM M3-M3 undamped (2014-07-28_1090609009_H1SUSPRM_M3_damp_OFF_ALL_TFs.pdf)

HAM2 ISI Status: ISI unlocked, ST1 damped, no isolation loops running.

MC1, MC3 & PRM alignment: No offset was applied during this measurement.

The undamped measurements from above, for each stage, have been compared with each other and the model (allhstss_2014-07-28_Phase3a_H1HSTSs_M2_Doff_ALL_ZOOMED_TFs.pdf and allhstss_2014-07-28_Phase3a_H1HSTSs_M3_Doff_ALL_ZOOMED_TFs.pdf).

Summary: 

M2-M2 TFs, show good agreement with the model and are consistent between H1 HSTS suspensions. However, the P DOF exhibits a feature at ~2 Hz present for both MC3 and to a much larger extent PRM. I suspected this to be an artifact of the measurement, therefore, I manually repeated the P DOF TF in DTT, which verified there were no issues with the suspension (see PRM_M2_P_DOF.png below).

M3-M3 TFs, again, these show good agreement with the model and are consistent between H1 HSTS suspensions, thus alleviating any concerns of rubbing.

All data, scripts and plots have been committed to the sus svn as of this entry.
Images attached to this report
Non-image files attached to this report
LHO VE
kyle.ryan@LIGO.ORG - posted 15:20, Monday 28 July 2014 (13025)
IP5 controller failed -> will replace


			
			
H1 SUS
arnaud.pele@LIGO.ORG - posted 14:55, Monday 28 July 2014 (13023)
HAM3 SUS (MC2 PR2) top stage tfs running overnight on opsws1

ISI is damped

H1 PSL
jeffrey.bartlett@LIGO.ORG - posted 13:44, Monday 28 July 2014 (13022)
PSL Status
PSL Status: 
SysStat: Green 
Output power: 36.2w  
Frontend Watch: Good
HPO Watch: Red  

PMC:
Locked: 4 days, 4 hours
Reflected power:    4.3w
Power Transmitted: 21.4w 
Total Power:       25.7w 

FSS:
Locked: 4 days, 4 hours
Trans PD: 0.53v

ISS:
Diffracted power: 7.535%
Last saturation event: 3 days
H1 SUS
arnaud.pele@LIGO.ORG - posted 12:44, Monday 28 July 2014 (13021)
PR3 lower stages results

Transfer functions of the lower stages of PR3 (HAM2) have been measured over the week end, with the sus undamped and the ISI damped.

M2-M2 tfs are showing good agreement with model and previous measurements (except for unexpected resonance at 0.97Hz in the L-L tf)
M3-M3 L-L is ok. P-P has a factor of 4 discrepancy with the model (similar pb as with SR3, which I thought I fixed but apparently not. I resaved a safe.snap with corrected EUL2OSEM matrix). Y-Y shows signs of couplings.

To note : The amplitude of excitation was too large, since the dac saturated for both M2 and M3 measurements (cf screenshot). I modified the drive parameters file "/ligo/svncommon/SusSVN/sus/trunk/Common/MatlabTools/SchroederPhaseTools/TFSettingsLHOHLTS", which should have correct gains from now.

The results are presented in the attachments :

1. H1 PR3 M2-M2 undamped tfs (green) compared with the model (blue)
2. H1 PR3 M2-M2 undamped tfs (pink) compared with undamped tf (in vacuum) from July last year (orange)
3. H1 PR3 M3-M3 undamped tfs (green) compared with model (blue)
4. H1 PR3 M3-M3 undamped tfs (pink) compared with H1 SR3 (cyan) (in chamber, in air, ISI locked) and L1 SR3 (in chamber, under vacuum, ISI isolated)

Data, scripts and safe.snap were commited under the svn

Images attached to this report
Non-image files attached to this report
H1 SUS
arnaud.pele@LIGO.ORG - posted 10:41, Monday 28 July 2014 (13017)
HAM2 PR3 (HLTS) tfs complete and clear

PR3 M1-M1 transfer functions ran over the week end after HAM2 closeout last friday are showing good agreement with the model and previous in vacuum measurements.

The results are presented in the attached pdf :

1. H1 PR3 in (closed) chamber, in air, ISI damped, M1-M1 undamped TFs (green) compared with the model (blue).
2. H1 PR3 in (closed) chamber, in air, ISI damped, M1-M1 undamped TFs (black) compared with in vacuum measurements from sept 2013 with ISI isolated (orange curve). 

Non-image files attached to this report
H1 CDS
david.barker@LIGO.ORG - posted 10:33, Monday 28 July 2014 (13020)
CAL added to SITEMAP mddm

I have added CAL buttons to the sitemap. PCALX is attached to the EX button, EY and CS are placeholders.

H1 SUS
stuart.aston@LIGO.ORG - posted 09:35, Monday 28 July 2014 (12974)
HAM2 - MC1, MC3 & PRM (HSTS) M1-M1 (top stage) Phase 3a TFs are clear
After securing doors on HAM2 (see LHO aLOG entry 12995), TFs have been taken over the weekend as part of Phase 3a testing to check for rubbing or other issues that may have developed as follows:-  

- MC1 M1-M1 undamped (2014-07-27_1090539018_H1SUSMC1_M1_damp_OFF_ALL_TFs.pdf)
- MC3 M1-M1 undamped (2014-07-26_1090401593_H1SUSMC3_M1_damp_OFF_ALL_TFs.pdf)
- PRM M1-M1 undamped (2014-07-26_1090403653_H1SUSPRM_M1_damp_OFF_ALL_TFs.pdf)

HAM2 ISI Status: ISI unlocked, ST1 damped, no isolation loops running.

MC1, MC3 & PRM alignment: No offset was applied during this measurement.

The undamped measurements from above have been compared with each other and the model (allhstss_2014-07-28_Phase3a_H1HSTSs_M1_Doff_ALL_ZOOMED_TFs.pdf).

Summary: 

MC1, MC3 & PRM show good agreement with the model and perform consistently, thus raising no concerns of rubbing.

Now need to check lower stage TFs and take power spectra.

All data, scripts and plots have been committed to the sus svn as of this entry.

Non-image files attached to this report
H1 General
jeffrey.bartlett@LIGO.ORG - posted 09:23, Monday 28 July 2014 (13018)
8:15 Meeting Minutes
BSC1:	
        Installation and alignment work on ACB
        Final IAS check on ITMY
	Mitch doing prep work for ACB installation 
	Filiberto testing the photo diodes  


BSC2/BSC3:
	Jim BSC2 problem are fixed and TFs are good
	Jim is testing BSC3
	SUS ready for final close out activities 
	TCS alignment needs to be checked

End-X:
	Will try to close BSC9 this week
	LLO crew working on close out prep and cleaning

HAM6:
	Plan to open on Tuesday or Wednesday

Electrical:
	Cable checkout at HAM6
	Prep work for high voltage work for PSL

Gerardo: 
	Viewport readiness survey
H1 CDS (DAQ)
david.barker@LIGO.ORG - posted 07:12, Monday 28 July 2014 (13016)
CDS model and DAQ restart report, Sunday 27th July 2014

no restarts reported.

H1 CDS (DAQ)
david.barker@LIGO.ORG - posted 09:47, Sunday 27 July 2014 (13015)
CDS model and DAQ restart report, Saturday 26th July 2014

no restarts reported.

H1 CDS
david.barker@LIGO.ORG - posted 15:11, Saturday 26 July 2014 - last comment - 15:28, Saturday 26 July 2014(13013)
/ligo file system down, we are repairing it

Patrick and Dave

at 14:52PDT cdsfs0 (file server for /ligo) encountered a error. All workstations are frozen due to loss of /ligo.

We are rebooting to see if we can bring it back.

Comments related to this report
david.barker@LIGO.ORG - 15:28, Saturday 26 July 2014 (13014)

/ligo file system is back. I tried to remotely power cdsfs0 down, but it got stuck in the process. Patrick powered it down using the front panel button, then powered it up. It did not do an automatic fsck and rebooted quickly. All systems appear to have reconnected to the file system seamlessly.

I checked the vacuum alarms to cell phones and MEDM screens to web are working. I verified the DAQ was unaffected. Patrick says the workstations in the control room became unstuck without any reboots needed. Some workstations are locked out by users and may have been running transfer functions, Patrick is emailing the relevant commissioners to check their TFs.

LHO General (FMP)
richard.mccarthy@LIGO.ORG - posted 09:50, Saturday 26 July 2014 - last comment - 12:46, Saturday 26 July 2014(13011)
Hanford Fire Maintenance on site
The Hanford Fire Dept will be on sight doing some fire hydrant flow measurements.  Should be done around noon.
Comments related to this report
richard.mccarthy@LIGO.ORG - 12:46, Saturday 26 July 2014 (13012)
Hanford Fire is done testing Hydrants for the day.  Thank you Mike Pedraza for shutting off the Pumps for me.  They could not test Hydrant 11 still out of service due to leak nor Hydrant 7 which has a broken valve.

H1 CDS (DAQ)
david.barker@LIGO.ORG - posted 07:57, Saturday 26 July 2014 (13010)
CDS model and DAQ restart report, Friday 25th July 2014

model restarts logged for Fri 25/Jul/2014
2014_07_25 10:25 h1odcx
2014_07_25 13:56 h1odcx

no unexpected restarts. PCAL work at EX.

Displaying reports 70441-70460 of 83105.Go to page Start 3519 3520 3521 3522 3523 3524 3525 3526 3527 End