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| Deletions are marked like this. | Additions are marked like this. |
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| == References == | === References === |
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| * [[KAGRA/Subgroups/MIF/OpticalCharacterization|Summary of Optical Characterization]] * MIF Schedule Estimate for bKAGRA Phase 2 [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7079|JGW-T1707079]] * Definitions for the X arm commissioning [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8343|JGW-T1808343]] * Definitions for the DRMI commissioning [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9573|JGW-T1909573]] |
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| * Tune f1, f2, f3 frequencies to IMC FSR * Replace all the in-vac steering mirrors and pick-off mirrors to proper ones [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=12592|JGW-T2112592]] * Replace all the beam splitters in in-air optical tables to non-polarizing beam splitters [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=12956|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 [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11633|JGW-T2011633]] |
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| * 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 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 ITMX and ETMX. * Try closing ASC loops. * Measure modulation depths for f1, f2 and f3. |
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| * Same as Xarm |
O4 Commissioning Task List
This is a list of things to do for each commissioning stage for O4.
Each stage include ASC.
References
klog review during O3 commissioining JGW-E2112729
MIF Schedule Estimate for bKAGRA Phase 2 JGW-T1707079
Definitions for the X arm commissioning JGW-T1808343
Definitions for the DRMI commissioning JGW-T1909573
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
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 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 ITMX and ETMX.
- Try closing ASC loops.
- Measure modulation depths for f1, f2 and f3.
Yarm
- Same as Xarm
Michelson
FPMI