Differences between revisions 10 and 11
Revision 10 as of 2011-05-23 22:24:22
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Editor: KiwamuIzumi
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Revision 11 as of 2011-05-23 22:30:37
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Editor: KiwamuIzumi
Comment:
Deletions are marked like this. Additions are marked like this.
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|| ''''' PRMI ''''' || [#C1ifoConfigureAAA C1ifoconfigurePRM] ||{{{ burt/C1ifoconfigure }}} ||locks PRMI ||Available from C1IFO_CONFIGURE screen. || || ''''' PRMI ''''' || [#C1ifoConfigurePRM C1ifoconfigurePRM] ||{{{ burt/C1ifoconfigure }}} ||locks PRMI ||Available from C1IFO_CONFIGURE screen. ||
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== AAA   = Xarm or Yarm == == if AAA = Xarm or Yarm ==
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<<Anchor(C1ifoconfigurePRM)>>
== else if AAA = PRM ==
 . This script locks the PRMI using AS55_Q and REFL11_I for MICH and PRC respectively (as of 2011/May/23). The script will automatically restore the necessary optics and misalign the unwanted optics. Then configures the input and output LSC matrices and gains according to {{{C1configure_PRM.snap}}}. Also switches the proper servo filters on.
   . {{{
   On C1IFO_CONFIGURE.adl
   Just click the script button for PRM and choose "restore PRM"
}}}

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= C1ifoconfigureAAA =
 . locks the X arm using XXX_I signal.
= C1saveAAA =
 . where AAA = (Xarm, Yarm, MI, PRM, DRM, FPMI, LSC, FULL)
 . This script saves the gains and the LSC input and output matrices for a particular locking condition.
 .{{{
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}}}

Also please see the All script page. attachment:lock.png

Category

Name

location

function

Notes

XARM

[#C1ifoconfigureXarm C1ifoconfigureXarm]

 burt/C1ifoconfigure 

lock X arm with AS55I

Available from C1IFO_CONFIGURE screen.

XARM

[#C1saveAAA C1saveXARM]

 burt/C1ifoconfigure 

save the configuration for X arm locking

YARM

[#C1ifoConfigureYarm C1ifoconfigureYarm]

 burt/C1ifoconfigure 

locks Y arm with AS55I

Available from C1IFO_CONFIGURE screen.

YARM

[#C1saveAAA C1saveYARM]

 burt/C1ifoconfigure 

save the configuration for Y arm locking

PRMI

[#C1ifoConfigurePRM C1ifoconfigurePRM]

 burt/C1ifoconfigure 

locks PRMI

Available from C1IFO_CONFIGURE screen.

PRMI

[#C1saveAAA C1savePRM]

 burt/C1ifoconfigure 

save the configuration for PRMI locking

DRMI

[#C1ifoConfigureAAA C1ifoconfigureDRM]

 burt/C1ifoconfigure 

Available from C1IFO_CONFIGURE screen.

DRMI

[#C1saveAAA C1saveDRM]

 burt/C1ifoconfigure 

save the configuration for DRMI locking

FPMI

[#C1ifoConfigureAAA C1ifoconfigureFPMI]

 burt/C1ifoconfigure 

FPMI

[#C1saveAAA C1saveFPMI]

 burt/C1ifoconfigure 

save the configuration for FPMI locking

need modification

DRFPMI

[#C1ifoConfigureAAA C1ifoconfigureFULL]

 burt/C1ifoconfigure 

Available from C1IFO_CONFIGURE screen.

DRFPMI

[#C1saveAAA C1saveFULL]

 burt/C1ifoconfigure 

save the configuration for full locking

ALS

BR


C1ifoconfigureAAA

if AAA = Xarm or Yarm

  • This script locks the X arm / Y arm using AS55_I signal (as of 2011/May/23). The script will automatically restore the necessary optics and misalign the unwanted optics. Then configures the input and output LSC matrices and gains according to C1configure_Xarm.snap or C1configure_Yarm.snap. Also switches the proper servo filters on.

    •    On C1IFO_CONFIGURE.adl
         Just click the script button for Xarm/Yarm and choose "restore Xarm/Yarm"

else if AAA = PRM

  • This script locks the PRMI using AS55_Q and REFL11_I for MICH and PRC respectively (as of 2011/May/23). The script will automatically restore the necessary optics and misalign the unwanted optics. Then configures the input and output LSC matrices and gains according to C1configure_PRM.snap. Also switches the proper servo filters on.

    •    On C1IFO_CONFIGURE.adl
         Just click the script button for PRM and choose "restore PRM"

BR

C1saveAAA

  • where AAA = (Xarm, Yarm, MI, PRM, DRM, FPMI, LSC, FULL)
  • This script saves the gains and the LSC input and output matrices for a particular locking condition.


BR BR

Here are the scripts used for locking in the past, and what they do:

Full IFO Locking


In the /cvs/cds/caltech/scripts/c1 directory:

These are scripts for locking the full IFO, not subparts.

c1_watch watches the state of the IFO, by looking at the transmitted arm power. When both arms are seen to have an arm power of 0.5 or greater, it runs the c1_aqstep. While waiting for lock, it tickles the ETMs. If it tickles for a few minutes without seeing a lock, it turns the LSC output off and then on, to break any bad-mode locks. It keeps track of how long it's been trying to lock the IFO, and prompts the user to check on the MC if it's been waiting a long time. After running the c1_aqstep script, it keeps track of how long the IFO has been locked. When it sees a lock loss event, it runs the c1_detdown script. Should just be left running in a terminal.

c1_detdown sets all the filter switches and gains to the lock-acquisition state (low-gain, no common mode, no boosts, etc.) To be run immediately after a lock-loss, or at the very beginning of locking. Called automatically by c1_watch

c1_aqstep to be run immediately after locking. It ramps up gains, turns on boosts, and hands off signals (PRC -> SPDD) (MICH -> APDD) (DARM -> AP166) Called automatically by c1_watch

c1_detstep to be run after c1_aqstep finishes. It hands off CARM to common-mode, then ramps down the CARM offset, engages the analog common mode servo, hands off CARM control to REFL_DC, reduces the offset some more, engages the RF path of the common mode servo (currently from POX33), then reduces the offset the rest of the way. Run by hand. offloadMCF must be running concurrently for c1_detstep to succeed.


In the directory /cvs/cds/caltech/scripts/LSC:

offloadMCF The ultra-low bandwidth common-mode servo. It takes the DC value of MCF and feeds it back to the ETMs.

ETM_tickle Tickles the ETMs until both arm powers go above 0.5. Mostly deprecated by c1_watch, but still occasionally usefull. Watch out for multiple instances!

LSCoffsets Digitally cancels the electronic offsets for all LSC photodiode signals. It makes darkness by mis-aligning the mode-cleaner, so the MC2 YAW TM offset must be enabled (on the main SUS screen for MC2).

Computers_and_Scripts/Locking_Scripts (last edited 2021-06-22 22:48:52 by GautamvenugopalanATligoDOTorg)