ISC Meeting on 2016/6/13 14:00 - 15:00

Participants:

Agenda

MIF membership [Michimura]
- members replied: Members
bKAGRA Phase 1 optical configuration study [Aso]: JGW-G1605199
- BS angle changes slightly (0.0187 deg) -> OK
- beam spot on PR3 shifts by 5 mm -> OK
- move PR2 and PR3 1 cm each to stabilize PRC -> OK
- HOM structure / LSC / ASC check -> to be done [Michimura]
  - initiated Optickle 2 modeling: KAGRAOptickle SVN (login required)
  - Optickle (Optickle2) seminar on July 1 densuke
- room temperature ETM availability -> ? [Hirose]
- any others?
bKAGRA Phase 1 initial alignment / commissioning plan [Michimura]: JGW-T1605274
- 4 months (2017.6-9) for 300 K PRMI with dummy payload, 1 week (2018.1) for CRYp PRMI before cooling down
- seems like we have enough time for ISC (but no margin)
- everything should be ready by 2017.5, and most of the commissioning should be done by 2017.10

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bKAGRA optical layout around PRC [Aso]
- POY beam is clipped by PR3 optical bench suspension wire
- JGW-T1605261 (cartoon)
iKAGRA post-run calibration mystery [Aso]
- klog #1767
- mysterious LPF was probably from saturation (is this end of the story?)
- Miyo-kun did time delay fitting: Jupyter Notebook, Files in Dropbox
Requirement for the noise of watchdogs for coil drivers [Aso]
Viewport quality for GV between SRM and OMMT [Akutsu]
bKAGRA phase 1 analog electronics request for AEL (Analog Electronics for ISC) [Michimura]
- Quad IQ Demodulator LSC: 7 for full bKAGRA (5 in stock)
  - is heating problem solved? [AEL]
- Quad IQ Demodulator ASC: 22 for full bKAGRA (0 in stock)
- RF Distribution Amplifier: 10 for full bKAGRA (1 handmade in stock)
- DC QPD Interface: 8 (+ AOS) for full bKAGRA (20 in stock) -> OK
- Common Mode Servo Board?: 4 for full bKAGRA (1 in stock)
  - could be used for FSS using PRCL
  - slow output too noisy?
- RF Patch Panel modification (too thick to fasten nuts) [who?]
- RF PD modification (Dsub 9pin won't fix tight, breaks easily with single power supply) [Doi?]
- single-ended to differential, differential to single-ended: 10 each being prepared by AEL -> OK
bKAGRA ISC cabling [Michimura/Doi]
- No reply from Doi-san
Mirror absorption measurement status [Hirose]
OMC status [Somiya]
Magnetic noise, actuator noise calculation for cryogenic payload [Michimura]
Task list update (TaskList) [Michimura]

2016/6/27 14:00 - 15:00