Differences between revisions 9 and 10
⇤ ← Revision 9 as of 2021-06-15 15:28:55 →
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Editor: YutaMichimura
Comment:
← Revision 10 as of 2021-06-15 15:32:44 → ⇥
Size: 4141
Editor: YutaMichimura
Comment:
Deletions are marked like this. Additions are marked like this.
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 * Install picomotor+PZT steering mirrors for POP green and POS green.
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   * Measure the beam spot position dependence     * Measure the beam spot position dependence.
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 * Make a power budget of each ISC detection port.
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 * Same as Xarm  * Same as Xarm.
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 * Check BS actuation efficiency  * Check BS actuation efficiency.
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 * Measure PRY length and PRX length
  * Previous methods give inconsistent results and also not compatible with Schnupp asymmetry measurements
 * Tune IMC length to PRC length (and re-tune sideband frequencies)
 * Check actuation efficiency of PR mirrors
 * Measure PRC Gouy phase		  * Measure PRY length and PRX length.
  * Previous methods give inconsistent results and also not compatible with Schnupp asymmetry measurements.
 * Tune IMC length to PRC length (and re-tune sideband frequencies).
 * Check actuation efficiency of PR mirrors.
 * Measure PRC Gouy phase.
Line 48: Line 50:
 * Check actuation efficiency of SR mirrors
 * Measure SRC Gouy phase		  * Check actuation efficiency of SR mirrors.
 * Measure SRC Gouy phase.
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 * Measure power at each ISC detection ports when DRMI is locked  * Measure power at each ISC detection port when DRMI is locked.
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 * Measure power at each ISC detection ports when FPMI is locked  * Measure power at each ISC detection port when FPMI is locked.
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 * Measure power at each ISC detection ports when PRFPMI is locked  * Measure power at each ISC detection port when PRFPMI is locked.
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 * Measure power at each ISC detection ports when PRFPMI is locked  * Measure power at each ISC detection port when PRFPMI is locked.

O4 Commissioning Task List

This is a list of things to do for each commissioning stage for O4.

Each stage include ASC.

References

Preparations

  • Tune f1, f2, f3 frequencies to IMC FSR

  • Replace all the in-vac steering mirrors and pick-off mirrors to proper ones JGW-T2112592

  • Replace all the beam splitters in in-air optical tables to non-polarizing beam splitters JGW-D2112956

    • This is necessary to estimate the polarization content of the interferometer correctly (without too much confusion)
  • Install polarization optics to backward POP or POS, and TRY and TRY.

    • This is necessary to estimate the arm cavity round-trip loss correctly JGW-T2011633

  • Check actuation efficiencies of IMC mirrors, frequency actuation efficiencies of PSL.
  • Install picomotor+PZT steering mirrors for POP green and POS green.

Xarm

  • Measure the finesse at room temperature and at cryogenic temperatures, for both 1064 nm and 532 nm.
  • Measure the round-trip loss by taking into account the effect of birefringence correctly.
    • Measure the beam spot position dependence.
  • Measure the amount of POP/POS p-pol when the arm is locked and unlocked.
  • Measure the mode-matching for both 1064 nm and 532 nm.
  • Tune the Gouy phase separation between two QPDs at TRX.
  • Measure the alignment sensing matrix at REFL/AS/TRX, for ITM and ETM.
    • Try closing ASC loops.
  • Measure modulation depths for f1, f2 and f3.
  • Check ITM and ETM actuation efficiencies.
  • Make a power budget of each ISC detection port.

Yarm

  • Same as Xarm.

Michelson

  • Check BS actuation efficiency.

Power recycling cavity

  • Measure PRY length and PRX length.
    • Previous methods give inconsistent results and also not compatible with Schnupp asymmetry measurements.
  • Tune IMC length to PRC length (and re-tune sideband frequencies).
  • Check actuation efficiency of PR mirrors.
  • Measure PRC Gouy phase.

Signal recycling cavity

  • Check actuation efficiency of SR mirrors.
  • Measure SRC Gouy phase.

Dual Recycled Michelson

  • Measure power recycling gains for carrier and sidebands, with and without SRC.
  • Measure length sensing matrix.
  • Measure power at each ISC detection port when DRMI is locked.
  • Measure the alignment sensing matrix at REFL/POP/AS.
    • Try closing ASC loops.

Fabry-Perot Michelson

  • Measure length sensing matrix.
  • Measure power at each ISC detection port when FPMI is locked.
  • Measure the alignment sensing matrix at REFL/POP/AS/TRX/TRY.
    • Try closing ASC loops.

Power Recycled Fabry-Perot Michelson

  • Measure length sensing matrix.
  • Measure power recycling gains for carrier and sidebands
  • Measure power at each ISC detection port when PRFPMI is locked.
  • Measure the alignment sensing matrix at REFL/POP/AS/TRX/TRY.
    • Try closing ASC loops.

Resonant Sideband Extraction

  • Measure length sensing matrix.
  • Measure power recycling gains for carrier and sidebands
  • Measure the cavity pole
  • Measure power at each ISC detection port when PRFPMI is locked.
  • Measure the alignment sensing matrix at REFL/POP/AS/TRX/TRY.
    • Try closing ASC loops.

KAGRA/Subgroups/MIF/O4CommissioningTaskList (last edited 2021-07-07 09:31:56 by YutaMichimura)