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  40m Log, Page 187 of 341  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  2747   Thu Apr 1 07:17:15 2010 KojiUpdateGeneralPZT response for the innolightThe shape of the TF looks nice but the
calibration must be wrong.
Suppose 1/f slope with 10^-4 rad/V
  
  2748   Thu Apr 1 10:21:58 2010 MottUpdateGeneralPZT response for the innolight


   
        
            
 Innolight_Response.pngLightwave_response.png 
  2749   Thu Apr 1 10:47:48 2010 KojiUpdateGeneralPZT response for the innolightInnolight: 100rad/V @ 100kHz  =>
1e7/f rad/V => 10MHz/V
LWE: 500rad/V @ 100kHz => 
  
  2750   Thu Apr 1 12:07:22 2010 ranaUpdateGeneralPZT response for the innolightThe Lightwave NPRO   
  2754   Thu Apr 1 18:05:29 2010 MottUpdateGeneralPZT response for the innolight 
 We realized that we had measured
the wrong calibration value; we were using
 Innolight_Response_calFix.pngLightwave_response_calFix.png 
  2755   Thu Apr 1 18:44:40 2010 KojiUpdateGeneralPZT response for the innolightInnolight 10 rad/V @ 100kHz => 1e6/f
rad/V => 1MHz/V
LWE 30 rad/V @ 100kHz => 3e6/f
  
  2756   Thu Apr 1 19:59:32 2010 MottUpdateGeneralPZT response for the innolight 
 We measured the Amplitude Modulation
response of the PZTs, to find regions with
 Innolight_AM_Response.pngInnolight_AM_PM.pngInnoVsLW_PM.pngInnolight_AM_Response.pngLightwave_AM_PM.png 
  2788   Mon Apr 12 14:20:10 2010 kiwamuUpdateGreen LockingPZT response for the innolightI measured a
jitter modulation caused by
  
  2799   Tue Apr 13 19:53:06 2010 MottUpdateGreen LockingPZT response for the innolight and lightwave 
 I redid the PZT Phase Modulation
measurement out to 5 MHz for both the Innolight
 6x 
  63   Mon Nov 5 14:44:39 2007 waldmanUpdateOMCPZT response functions and De-whiteningThe PZT has two control paths:  a DC coupled
path with gain of 20,  range of 0 to 300
V,  and a pair of 1:10 whitening filters,
 07110_DithertoVmonAC_sweep2-0.png071105_LSCtoVmonDC_sweep4-0.png07110_DithertoVmonAC_sweep2.pdf071105_LSCtoVmonDC_sweep4.pdf 
  5149   Tue Aug 9 02:34:26 2011 JennyUpdatePSLPZT transfer function measurementUsing a PDA255 on the PSL table, I measured
the amplitude response of the NPRO PZT, sweeping
from 10kHz to 5 MHz.
  
  179   Fri Dec 7 11:33:24 2007 waldmanOmnistructureOMCPZT wiringThe 2 pin LEMO connector has got an unmarked
pin and a pin marked by a white half-circle.
The unmarked pin is connected to the side
  
  6351   Mon Mar 5 03:50:49 2012 kiwamuUpdateIOOPZT1 PITCH railingPZT1
started railing in the pitch direction and
because of this TRY doesn't go more than
  
  7323   Thu Aug 30 20:31:35 2012 JenneUpdateIOOPZT1 and PZT2 set to center of their ranges[Koji, Jenne]
Jamie and Koji pointed out that we
need to be doing the in-vac alignment with
  
  6410   Wed Mar 14 04:03:37 2012 kiwamuUpdateIOOPZT1 and associate extra worksAs the PZT1 has not been functional, I
have been aligning the Y arm to the input
beam instead of aligning the beam to the
  
  5368   Fri Sep 9 11:59:58 2011 kiwamuUpdateIOOPZT1 doesn't workLast night I
noticed that PZT1 didn't work properly
  
  5447   Sat Sep 17 14:04:45 2011 KojiUpdateIOOPZT1 driver in placeThe PZT driver is now in place. The actual PZTs are
not connected yet!
 P9171579.JPGP9171580.JPG 
  7857   Wed Dec 19 18:40:00 2012 JenneUpdateIOOPZT1 removed, TT1 in place[Manasa, Jamie, Jenne]
PZT1 has been removed, and is wrapped
in foil and stored in a (labeled) plastic
  
  7858   Wed Dec 19 19:28:12 2012 ManasaUpdateIOOPZT1 removed, TT1 in place

    

       
            
  
  5431   Fri Sep 16 11:15:12 2011 KojiUpdateIOOPZT1 situation[Koji Kiwamu]
- We have checked the situation of
the broken Piezo Jenna PZT (called PZT1)
 P9151574.JPGP9161576.JPGP9161577.JPG 
  7440   Wed Sep 26 01:10:34 2012 JenneUpdateIOOPZT2 not working?!?! MC back to normal[Jenne, Evan, Den]
MC REFL beam is back on the PD,
and the mode cleaner locks.  It
  
  7509   Tue Oct 9 00:25:33 2012 JenneUpdateIOOPZTs - hacky solution in place!![Evan, Jenne]
We applied some volts across both
the pitch and yaw pin sets of the ribbon
  
  4108   Tue Jan 4 21:21:57 2011 kiwamuUpdateIOOPZTs are connected to c1iscauxI connected
PZT1 and PZT2 to a slow front end machine
 Screenshot20110104.png 
  5589   Fri Sep 30 18:06:24 2011 kiwamuSummaryIOOPZTs straing guage   beforeOutage110930.png 
  12139   Fri May 27 11:54:22 2016 VarunUpdateGeneralPackage deliveryA package labelled 'UPS Ground'
has arrived.

-Varun
  
  4986   Mon Jul 18 22:26:43 2011 NicoleUpdateSAFETYPainful Voltage Regulator and Circuit-Testing LessonsToday I learned
some important circuit-building lessons while
 P7180423.JPGP7180424.JPG 
  4990   Tue Jul 19 13:45:22 2011 SureshUpdateSAFETYPainful Voltage Regulator and Circuit-Testing LessonsThere is should be a few IDC connectors
in the lab (and some ribbon cable) using
which you can proceed with the testing of
  
  14172   Tue Aug 21 03:09:59 2018 johannesOmnistructureDAQPanels for Acromag DAQ chassisI expanded the previous panels to 6U height
for the new DAQ chassis we're buying
for the upgrade. I figure it's best if
 auxdaq_40m_6U_front.pdfauxdaq_40m_6U_rear.pdfauxdaq_40m_6U_BNC.pdf 
  14283   Wed Nov 7 19:20:53 2018 gautamUpdateComputersPaola Battery ErrorThe VEA vertex laptop, paola,
has a flashing orange indicator which I take
  
  14672   Thu Jun 13 22:21:44 2019 KojiConfigurationCDSPaola wireless connected to martianSURFs had trouble connecting paola to martian
via wireless.
Of course, it requires a fixed IP
  
  1482   Tue Apr 14 17:20:36 2009 YoichiUpdateComputer Scripts / ProgramsParallel OptickleI wrote a parallel version of tickle() function
for Optickle.
The attached ptickle.m, which provides ptickle()
 ptickle.m 
  16429   Tue Oct 26 16:56:22 2021 PacoSummaryBHDPart I of BHR upgrade - Locked PMC and IMC[Paco, Ian]

We opened
  
  16425   Mon Oct 25 17:37:42 2021 AnchalSummaryBHDPart I of BHR upgrade - Removed optics from BSC[Anchal, Paco, Ian]


Clean room etiquettes


Two
people in coverall suits, head covers, masks
 rn_image_picker_lib_temp_44cb790a-c3b4-42aa-8907-2f9787a02acd.jpgrn_image_picker_lib_temp_0fd8f4fd-64ae-4ccd-8422-cfe929d4eeee.jpg 
  16431   Wed Oct 27 16:27:16 2021 AnchalSummaryBHDPart II of BHR upgrade - Prep[Anchal, Paco, Ian]

Before we could start working on
Part II, which is to relocate TT2 to new
 OMCNorthBefore.jpegOMCNorthAfter.jpeg 
  16433   Wed Oct 27 16:38:02 2021 AnchalSummaryBHDPart II of BHR upgrade - Relocation of TT2 and MMT1/2 alignment[Anchal, Paco]

We opened BSC and Injection Chamber
doors. We removed two stacked counterweights
  
  16434   Wed Oct 27 18:11:37 2021 KojiSummaryBHDPart II of BHR upgrade - Relocation of TT2 and MMT1/2 alignmentClosed the PSL shutter @18:11
During the vent, we want to keep the
cavity unlocked if not necessary.
  
  16435   Wed Oct 27 18:16:45 2021 KojiSummaryBHDPart II of BHR upgrade - Relocation of TT2 and MMT1/2 alignment- Moving the MMT2 south by a cm is fine.
This will give you ~0.5cm at TT1 without
changing the other alignment much.
  
  16438   Thu Oct 28 17:01:54 2021 AnchalSummaryBHDPart III of BHR upgrade - Adding temp fixed flat mirror for PR2[Anchal, Paco, Ian]


We added a Y1-2037-0 mirror
(former IPPOS SM2 mirror) on a fixed mount
  
  16628   Thu Jan 27 18:03:36 2022 PacoSummaryBHDPart III of BHR upgrade - Install PR2, balance, and attempt OSEM tuning[Paco, Anchal, Tega]

After installing the short OSEMs
into PR2, we moved it into ITMX Chamber.
  
  16629   Thu Jan 27 20:46:38 2022 KojiSummaryBHDPart III of BHR upgrade - Install PR2, balance, and attempt OSEM tuning
Started debugging D1002818
/ S2100737
(8:30PM)
Confirmed the issue of
 Screen_Shot_2022-01-27_at_20.33.56.pngScreen_Shot_2022-01-27_at_21.30.16.png 
  16630   Fri Jan 28 10:37:59 2022 PacoSummaryBHDPart III of BHR upgrade - PR2 OSEM finalized, reinsall LO1 OSEMs[Paco]

Thanks to Koji's hotfix on
the PR2 SatAmp box last evening, this morning
  
  16631   Fri Jan 28 11:30:52 2022 KojiSummaryBHDPart III of BHR upgrade - PR2 OSEM finalized, reinsall LO1 OSEMsAll
green! Great work, Team!
  
  16637   Wed Feb 2 16:22:00 2022 AnchalSummaryBHDPart III of BHR upgrade - PR2 inpute matrix diagonalizedThe
free swinging test was successful. I
ran the input matrix diagonalization code
 PR2_FreeSwingData_PeakFitting_20220125.pdfPR2_SUS_InpMat_Diagnolization_20220202.pdf 
  16638   Wed Feb 2 16:27:57 2022 AnchalSummaryBHDPart III of BHR upgrade - PR3 inpute matrix diagonalizedThe
free swinging test was successful. I
ran the input matrix diagonalization code
 PR3_FreeSwingData_PeakFitting_20220125.pdfPR3_SUS_InpMat_Diagnolization_20220202.pdf 
  16432   Wed Oct 27 16:31:35 2021 AnchalSummaryBHDPart III of BHR upgrade - Removal of PR2 Small SuspensionI went inside the ITMX Chamber to read
off specs from PR2 edge. This was required
to confirm our calculations of LO power for
  
  16627   Thu Jan 27 17:57:35 2022 AnchalSummaryBHDPart III of BHR upgrade - Replaced small suspended PR3 with new SOS PR3 and OSEM tuning[Anchal, Paco]

We removed the old PR3 housed in
a tip-tilt style suspension and put it on
  
  16733   Thu Mar 17 17:23:22 2022 AnchalSummaryBHDPart IIa of BHR upgrade - Green laser alignment[Anchal, Yehonathan] (on Y Arm)

We first checked if the PZT mirrors
M1 and M2 can be controlled. They indeed
  
  16740   Mon Mar 21 18:24:07 2022 AnchalSummaryBHDPart IIa of BHR upgrade - Green laser alignment on Yarm[Anchal, Tega]

We did the following alignment
steps on Yarm today:
  
  16742   Thu Mar 24 19:20:28 2022 AnchalSummaryBHDPart IIa of BHR upgrade - Green laser alignment on Yarm[Anchal, Paco]


Uneloged: yesterday, Paco
and Ian tried locking the green laser on
  
  16744   Fri Mar 25 18:20:28 2022 AnchalSummaryBHDPart IIa of BHR upgrade - Green laser alignment on Yarm[Anchal, Paco, Shruti]


Today we found out that
the laser controller at the Yend had it's
  
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