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| * The ACC was set on the floor of IYV area. The folded pendulum was tuned to 0.24Hz. The servo loop was configured by Miyo-san using KAGRA digital system. * When we finished the final setting on Wednesday afternoon, the large earthquake (M7.8) was happened at Aleutian islands. So Miyo-san measured and evaluated the spectrum later. |
Agenda/Minutes of the VIS Meeting on 2020/7/31
2020/7/31 14:00 -
Participants:
Progress report
General
[Miyo] by 07/31/2020, 20% done (+0%), Make a cabling diagram for O4
[Miyo] by 08/28/2020, 25% done (+0%), Make prototype system for temperature control
[Miyo] by 08/28/2020, 20% done (+0%), Enable to control the limit switch of stepper motor
[Miyo] by 08/28/2020, 0% done (+0%), Request AEL chassis for picomotor driver
[Miyo] by 08/28/2020, 0% done (+0%), Update remote control system
[Miyo] by 08/28/2020, 0% done (+0%), Add CRYO stepper motor in the remote control system
Type-A
The accelerometer with LVDT was tested at the site (report).
- The ACC was set on the floor of IYV area. The folded pendulum was tuned to 0.24Hz. The servo loop was configured by Miyo-san using KAGRA digital system.
- When we finished the final setting on Wednesday afternoon, the large earthquake (M7.8) was happened at Aleutian islands. So Miyo-san measured and evaluated the spectrum later.
Type-B
- Paper: I finished writing. I'm waiting for Enzo's comments to submit to CPC and share it with the rest of VIS people.
Type-Bp
Type-C
Controls
Electronics
Towards O4
- KAGRA is in "Upgrade phase for O4". Upgrade of SR controls were performed. The accelerometer with LVDT was tested at the site.
Plan for cleaning the clean booth (EN, JP) will be submitted by 3rd. Aug. It is necessary to make the inventory with location (example for Type-A).
[Washimi] PEM team introduce the Holobuilder (Google street view like tool). Let's discuss about cleanup plan with this tool.
Preparation work (pre-cleaning) will be started from 17th Sep. Cleaning schedule.png.
cf. Post Obs. task (Request), Task for O3c (Plan, Sheet), Task towards O4 (List), Schedule towards O4 (Chart).
Safety
[Washimi] Room temperature and GAS status https://www.icrr.u-tokyo.ac.jp/~washimi/KAGRA/SEM/fig_GAS/
- The temperature in mine dropped during July 9th - July 19th (-0.8degC). We couldn't find this until July 22th due to the trouble and maintenance of the network.
- We added 2 heaters on July 28th.
Discussion
Travel Plans
Next meeting
- On 2020/8/7(Fri)