40m QIL Cryo_Lab CTN SUS_Lab CAML OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 215 of 349  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  5319   Mon Aug 29 18:16:10 2011 jamieUpdateCDSRe : fb downfb is now up and running, although the
/frames raid is still undergoing an fsck
which is likely take another day.  Consequently
  
  16715   Tue Mar 8 19:29:36 2022 PacoUpdateBHDRe-balance of AS1[Paco]

Installed AS1 in vacuum, near the
center of the table, and installed the OSEMs.
  
  16716   Wed Mar 9 09:35:26 2022 PacoUpdateBHDRe-balance of AS1[Paco]

AS1 is installed, OSEMs balanced,
and the optic damped successfully. We should
  
  3798   Wed Oct 27 16:15:35 2010 SureshUpdateSUSRe-glued magnet to the PRMThanh and I re-glued the magnet to the
PRM following the procedure outlined by Jenne
The PRM in the gluing fixture has
  
  11501   Wed Aug 12 22:33:36 2015 IgnacioUpdateIOORe-measured MC2 -> MCL TFSince I will need to do transfer function
measurements in order to implement FF for
the arms and the MC2's yaw and pitch
 bode_TF.pngCoherence.png 
  16678   Thu Feb 24 18:05:58 2022 YehonathanUpdateBHDRe-susspension of AS1{Yehonathan, Anchal, Paco}

Yesterday, Anchal and Paco removed
AS1 from the vacuum chamber and moved it
 signal-2022-02-24-173933_003.jpegsignal-2022-02-24-173933_002.jpeg 
  16694   Wed Mar 2 14:02:43 2022 YehonathanUpdateBHDRe-susspension of AS1Yesterday, I rebuilt the OpLev setup in
the cleanroom in order to suspend AS1. It
took me a while to find all the necessary
  
  16698   Thu Mar 3 17:09:46 2022 PacoUpdateBHDRe-susspension of AS1[Anchal, Paco]

Wire clamp spare was installed,
furthermore AS1 was reinstalled on adapter,
  
  16710   Mon Mar 7 16:56:08 2022 YehonathanUpdateBHDRe-susspension of AS1{Paco, Yehonathan}

We tried to roughly balance the
adapter with two counterweights at the front,
 signal-2022-03-07-171520_001.pngsignal-2022-03-07-172659_001.jpegsignal-2022-03-07-172659_003.jpeg 
  16711   Mon Mar 7 18:53:16 2022 KojiUpdateBHDRe-susspension of AS1Not sure if that small difference can cause
the alignment inability. Particularly, the
removed metal was just below the wire. This
  
  16714   Tue Mar 8 12:24:13 2022 YehonathanUpdateBHDRe-susspension of AS1The gluing seemed to be successful. I assembled
the side block with the magnet on the adapter.
Paco helped me hang the adapter on the SOS
 AS1_Roll_Balance.pngAS1_Height_Balance.pngFreeSwingingSpectra_new.pdf 
  3823   Fri Oct 29 14:06:12 2010 kiwamuUpdateGreen LockingRe: 80MHz VCO for green PLL : VCO calibrationP.S. There is a document about the 80MHz
VCO box. This may be helpful. 
  
  14014   Mon Jun 25 19:14:02 2018 UditSummaryGeneralRe: A summary of the Tip-TIlt Mirror Holder design changes2. Weighted screw rod at the bottom
for tilting the mirror-holder:

The screw length selected here
 4-1.png4-2.png 
  14015   Mon Jun 25 21:14:08 2018 KojiSummaryGeneralRe: A summary of the Tip-TIlt Mirror Holder design changes3.
- Do we need this much of extended
range of the clamp location? How much range
  
  5251   Wed Aug 17 02:48:56 2011 kiwamuUpdateRF SystemRe: AM in the PM[Keiko / Suresh / Anamaria / Kiwamu]
 The AM
  
  5285   Tue Aug 23 09:40:37 2011 kiwamuUpdateGeneralRe: AS clipping fixedIndeed it was suspenseful.
We
tried finding where the clipping happened,
  
  619   Tue Jul 1 21:54:05 2008 KojiUpdateGeneralRe: Abs. Length Meas. setupI tried to look for the beating in the signal
from the PD but I couldn't find. I had the
temperature of the laser initially set to
  
  5652   Tue Oct 11 19:11:25 2011 kiwamuUpdateLSCRe: BS actuator reponse at low frequency : measuredI think
the precision due to the loop gain uncertainty
  
  4948   Wed Jul 6 18:15:26 2011 kiwamuUpdateSUSRe: BS oplev spectra[Steve / Kiwamu]
Motivation:
 
  
  13479   Fri Dec 15 00:26:40 2017 johannesUpdateCDSRe: CDS recovery, NFS woes


Quote:


  
  4611   Tue May 3 13:22:13 2011 LeoUpdateSUSRe: DRMI prep : suspension diagnosticHere are the free-swinging spectra for
the BS, ETMX, ETMY, ITMX, ITMY, MC1, MC2,
MC3, and PRM chambers.  Kiwamu left
 10x 
  4613   Tue May 3 15:04:20 2011 kiwamuUpdateSUSRe: DRMI prep : suspension diagnosticJenne went through all the suspension racks
and pushed all the connectors.
After pushing them, we had a quick
  
  5153   Tue Aug 9 11:33:33 2011 kiwamuUpdateSUSRe: ETMX free swinging dataI believe that the 17 Hz broad structure on
SIDE is just because of a bad rotational
  
  5221   Sat Aug 13 02:31:42 2011 kiwamuUpdateSUSRe: ETMY hopefully good againI guess the ETMY suspension is still fine.
Their OSEM DC voltage and the free swinging
spectra look healthy.
  
  5237   Mon Aug 15 13:16:50 2011 JenneUpdateSUSRe: ETMY hopefully good again


   
        
            
  
  1753   Wed Jul 15 18:22:15 2009 KojiUpdateCamerasRe: GigE Phase Camera


   
        
            
  
  3340   Sat Jul 31 10:12:05 2010 kiwamuUpdateVACRe: How to stop and start slow pumpdownI resumed the pumping down. It started
from 9:55 am.
  
  3341   Sat Jul 31 14:59:33 2010 kiwamuUpdateVACRe: How to stop and start slow pumpdownI stopped the pumping at 14:50 pm
because I was going back home. I did the
  
  4921   Thu Jun 30 11:36:54 2011 JamieUpdateSUSRe: ITMX whitening, ETMX left free swinging

    
        
  
  5338   Fri Sep 2 17:57:18 2011 kiwamuUpdateSUSRe: ITMY released without opening chambersIt
stacked again 
  
  4627   Wed May 4 15:22:39 2011 kiwamuUpdate Re: Intermittent MC3 UL PD signalI
went push all the possible connectors for
the MC3 shadow sensors including the SCSIs,
  
  7570   Wed Oct 17 19:35:58 2012 KojiUpdateComputersRe: Lots of new White :(Solved. The power code of c1iscaux was
loose. 
  
  7574   Thu Oct 18 08:00:40 2012 jamieUpdateComputersRe: Lots of new White :(

    

       
            
  
  5173   Wed Aug 10 14:30:55 2011 kiwamuUpdateIOORe: MC A2L alignmentI modified a set of the automated MC
locking scripts which are dedicated for the
low power MC.
  
  5238   Mon Aug 15 14:07:39 2011 kiwamuUpdateIOORe: MC misaligned a lotThe leveling
was still okay. The MC mirrors were realigned
  
  4643   Thu May 5 15:28:23 2011 kiwamuUpdateLSCRe: MI locking : calibration of BS and ITMs actuatorsThey are the DC responses.
I put the resonant frequencies that
  
  1373   Mon Mar 9 11:09:33 2009 AlbertoUpdateComputersRe: Not even data retrieval working[quote]Although getting the regular DAQ data
works, we can't get any testpoints.
  
  2920   Wed May 12 10:33:32 2010 kiwamuUpdateGreen LockingRe: Reflection from ETM and ITM !The procedure you wrote down as a standard
is right.   I explain reasons why
we didn't do such way. 
  
  2921   Wed May 12 12:25:11 2010 KojiUpdateGreen LockingRe: Reflection from ETM and ITM !???
I still don't understand. What principle
are you rely on?
  
  5776   Tue Nov 1 16:02:15 2011 kiwamuUpdateSUSRe: SUS input matrix diagonalizer REMOVED from crontab

    

       
            
  
  4195   Mon Jan 24 13:08:07 2011 kiwamuUpdateGreen LockingRe: X arm locked !


   
        
            
 e_pll_oltf.png 
  4196   Mon Jan 24 14:27:13 2011 kiwamuUpdateGreen LockingRe: X arm locked !


   
        
            
 masslock_oltf.png 
  4413   Fri Mar 18 16:06:30 2011 kiwamuUpdateGreen LockingRe: Y arm plan for todayWe use
Alberto's laser for the Y end Green Locking.
  
  4414   Fri Mar 18 16:31:11 2011 Suresh UpdateGreen LockingRe: Y arm plan for todayThe
reason for using Alberto's laser is that
some amount of work has already gone into
  
  5125   Fri Aug 5 15:11:24 2011 kiwamuUpdateSUSRe: cross couplingThere is a page on the 40m wiki explaining
the procedure.
 
  
  3414   Thu Aug 12 18:30:08 2010 kiwamuUpdateCDSRe: current statusYes.  
The medm screen C1SUS_GDS_TP.adl
showed some numbers which correspond
  
  2374   Wed Dec 9 21:09:28 2009 kiwamuUpdateSUSRe: free swinging spectra of ETMY and ITMXOkay, now the data are attached. At that
time I just wanted to say like the follower.
- - -
 Pitch-Yaw_modes.png 
  2375   Thu Dec 10 00:46:15 2009 KojiUpdateSUSRe: free swinging spectra of ETMY and ITMXWell, I get the point now. It could
be either seismic or change in the suspension
Q.
  
  3315   Thu Jul 29 10:39:43 2010 kiwamuUpdateSUSRe: installation of in-vac opticsI updated the last entry   
  3092   Sun Jun 20 18:28:25 2010 kiwamuUpdateGreen LockingRe: lock with PDH boxOn the wiki I summarized about the modification
of the PDH box which is currently running
on the end PDH locking. 
  
ELOG V3.1.3-