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corey.gray@LIGO.ORG - posted 18:19, Sunday 13 December 2015 - last comment - 18:58, Sunday 13 December 2015(24186)

Initial Alignement Notes

Making notes from Initial Alignement work, locking and chatting with Sheila:

Initial Alignment:

Started another Initial alignment
ALS already looked good, so Offloaded GREEN WFS.
- While offloading, Yarm dropped. So, offloaded by hand (tweaked ETMy Yaw slider until the M0 LOCK OUTPUT went from -14 to ~0.)
PR3 Adjustment: COMM Beatnote was low so adjusted PR3 a bit in mainly Pitch. (went from 2.4 to 4.7, want to be between 4-5).
Input Align
- Not locking
- Flashes mainly up to 0.55 seen on dv
- Camera seems to show misalignment off diagonally
- Increased XARM gain from 0.05 to 0.15 (no luck), and then to 0.2...Xarm locked after about a minute. Went from 0.8 to about 1.0 via WFS. Looked at the StripTool on the wall, and those channels looked to converge to 0.
- Offloaded...as I did this I watched PR2 & IM4's M1 LOCK OUTPUTS go to zero = GOOD!
PRM Align, no issues.
Dark Michelson, no issues (minor BS tweaks)
SRC Align, no issues
On to locking, & crossing fingers.

Locking

DRMI locking: POP18 & 90 looked good with flashes flashing up to 150-200 on dataviewer, BUT the AS camera would have some ugly modes every min or so. Have had a DRMI lock...but only for a about 20sec and then 18 & 90 dropped. Might look at PRMI....oh wait, DRMI LOCKED....Stay tuned!

Comments related to this report

corey.gray@LIGO.ORG - 18:35, Sunday 13 December 2015 (24188)

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Comepleted CARM_5PM, dropped while in RESONANCE Guaridan state:

2015-12-14T02:22:27.22172 ISC_LOCK executing state: REFL_TRANS (409)
2015-12-14T02:22:27.22198 ISC_LOCK [REFL_TRANS.enter]
2015-12-14T02:22:27.48413 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-REFLBIAS => ON: FM2
2015-12-14T02:22:27.52074 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-TR_REFLAIR9_TRAMP => 0
2015-12-14T02:22:33.39102 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-TR_REFLAIR9_OFFSET => -0.112938329577
2015-12-14T02:22:33.78661 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-TR_REFLAIR9 => ON: FM1, FM2, FM5, OFFSET
2015-12-14T02:22:33.79052 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-PD_DOF_MTRX_SETTING_9_27 => 3.0
2015-12-14T02:22:33.79147 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-PD_DOF_MTRX_SETTING_9_26 => 0.0
2015-12-14T02:22:33.79198 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-TR_REFLAIR9_TRAMP => 2
2015-12-14T02:22:33.79250 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-PD_DOF_MTRX_TRAMP => 0.2
2015-12-14T02:22:33.79846 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-PD_DOF_MTRX_LOAD_MATRIX => 1
2015-12-14T02:22:33.80202 ISC_LOCK [REFL_TRANS.main] ezca: H1:LSC-ARM_INPUT_MTRX_LOAD_MATRIX => 1
2015-12-14T02:22:33.88079 ISC_LOCK [REFL_TRANS.run] USERMSG: Input matrix not ready.
2015-12-14T02:22:33.88557 ISC_LOCK [REFL_TRANS.run] ezca: H1:LSC-PD_DOF_MTRX_LOAD_MATRIX => 1.0
2015-12-14T02:22:33.89565 ISC_LOCK [REFL_TRANS.run] ezca: H1:LSC-ARM_INPUT_MTRX_LOAD_MATRIX => 1.0
2015-12-14T02:22:35.14264 ISC_LOCK [REFL_TRANS.run] MC not locked
2015-12-14T02:22:35.19776 ISC_LOCK state returned jump target: LOCKLOSS

2015-12-14T02:22:35.19798 ISC_LOCK [REFL_TRANS.exit]

Giving it another try...haven't tried alignment touch up while in PRMI
Just had another post DRMI attempt...this time, only made it to RF DARM, before dropping

Contacted LLO, and sounds like they are possibly just past the peak of noisy storm activity....and the forecast may lead to them being back online sooner (few hours) rather than later (tomorrow). Robert's determining a game plan for his injections.

corey.gray@LIGO.ORG - 18:58, Sunday 13 December 2015 (24189)

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I did try an attempt with ETMX with 45mHz on x & ETMy with 45mHz on y for the Blends, but no change. So I went back to having both x & y axis 45mHz blends for both etms.