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===== News ===== * ITMY * we decided to go with current configuration for the time being. * ETMY * During a measurement, I kicked IP accidentally and the orientation of ETMY went away. * Everything should be free now since BFYexc and MNexc transfer functions looked consistent with the ones measured before this kick. * Only the orientation was changed somehow. * We decided to open the chamber. The cryocooler was turned off already. * During another measurement. it was found that F3-GAS was arriver at the current position (klog#). * since the shapes of the GAS mechanical transfer functions were changed from the precious ones, I updated the modeled transfer function and filters in the filter-bank. ===== Building damping system for payload ===== * ITMX / ETMY * I started to measure the mechanical transfer functions with Photo-sensors for building. * ETMY-MN * 6dof, done. Sensor diagonalization would be necessary. |
Agenda/Minutes of the VIS Meeting on 2019/6/21
2019/6/21 13:30 -
Participants:
Progress report
Type-A (Takahashi)
Past week report
- Checked stock parts.
- Sent back a spare ACC unit to Mitaka for developments.
News
- ITMY
- we decided to go with current configuration for the time being.
- ETMY
- During a measurement, I kicked IP accidentally and the orientation of ETMY went away.
- Everything should be free now since BFYexc and MNexc transfer functions looked consistent with the ones measured before this kick.
- Only the orientation was changed somehow.
- We decided to open the chamber. The cryocooler was turned off already.
- During another measurement. it was found that F3-GAS was arriver at the current position (klog#).
- since the shapes of the GAS mechanical transfer functions were changed from the precious ones, I updated the modeled transfer function and filters in the filter-bank.
- During a measurement, I kicked IP accidentally and the orientation of ETMY went away.
Building damping system for payload
- ITMX / ETMY
- I started to measure the mechanical transfer functions with Photo-sensors for building.
- ETMY-MN * 6dof, done. Sensor diagonalization would be necessary.
- I started to measure the mechanical transfer functions with Photo-sensors for building.
Plan for coming weeks
Type B (Mark)
Past week report
Plan for coming weeks
Type-Bp (Shoda)
Past week report
Plan for coming weeks
OMMT & OSTM (Takahashi)
Past week report
- Checked stock OSEMs. There are 17 units.
- Disassembled the pillars of the MC suspension for modification.
- Ordered the modification parts.
Plan for coming weeks
Schedule(PDF/MPP)
VIS electronics (Tanaka)
Past week report
Plan for coming weeks
Other site works
Safety
- Incidents:
- Foreseen risks
- Type-A:
- Type-B:
Discussion
Realtime model update policy
- Make local copies of the relevant files (.mdl, MEDM files etc) to modify an existing RTM.
- Once the modifications are complete, you can deploy the modified files by replacing the existing ones.
- Notify the relevant people (kagra-seis and gokagra ML) in advance (more than a day) of the deployment of the modified RTM.
- Deployment should be complete.
- Do not attempt a partial update, such as changing only ETMX. Update all the suspensions of the same kind (Type-A, B, Bp) at once, unless there is a good reason to do so.
- Update MEDM screens at the same time to reflect changes in the RTM.
- People can test the modified RTM during non-interferometer-commissioning time, i.e. in the morning.
- After the test, the RTM should be reverted to the original one, before the interferometer commissioning starts.
Where to put the hardware WDS ?
- Type-Bp: GAS LVDT ?
- Type-B: IP ?
- Type-A: IP ?
Travel Plans
- Travel (Week of 6/24):
- Takahashi:
- Sato:
- Mark:
- Hirata:
- Shoda:
- Fujii:
- Tanioka:
- Tanaka:
- Terrence:
- Travel (Week of 7/1):
- Takahashi:
- Sato:
- Mark:
- Hirata:
- Shoda:
- Fujii:
- Tanioka:
- Tanaka:
- Terrence:
Next meeting
On 2019/6/28(Fri)