Agenda/Minutes of the VIS Meeting on 2019/9/13
2019/9/13 14:00 -
Participants:
Progress report
Type-A
Past week report
Plan for coming weeks
Type B
Report for the week 13-09-2019
In previous weeks we identified injected noise into the SR3 IM from the oplev (klog 10262). On Monday I put notches at various frequencies where there were peaks (klog 10423). This procedure seems to work but it's tedious and we should do it in an as-needed depending on the impact of each peak in the interferometer signal.
Shoda-san and Terrence began been working in IM-L to IM-P and IM-Y filters (klog 10505).
- In a previuos week I modified the SR2 real-time model in order to do LVDT correction with the seismometer signals. This week was mainly troubleshooting and preparation:
We found a couple of errors in the real-time model (klog 10460, 10509).
- Miyo-kun added ati-aliasing filter at the output of the PEM real-time model before the Dolphin network.
An integrator is needed for the seismometer signal in order to get a displacement. However, the automatically generated medm screen points to a different filter bank (klog 10510). This hasn't been fixed yet.
Still, I measured transfer functions from seismometer on the ground to IP LVDT in FLOAT state, data which can be corrected (klog 10510).
In SR2 the cables connecting the BIO output from the coil drivers to the DIO card inside the I/O chassis were connected in a wrong way. I fixed them (klog 10464 and 10508).
Plan for coming week
- Terrence and Shoda-san will work in IM-L to TM angular decoupling.
- After decoupling IP LVDT sensor correction is the priority.
Type-Bp
Past week report
Plan for coming weeks
OMMT & OSTM (Takahashi)
Past week report
- Evaluating the M2052 sample bar for OMC.
Plan for coming weeks
VIS electronics
Past week report
Plan for coming weeks
Other site works
Safety
- Incidents:
Discussion
- Continued discussion on the VIS repair/upgrade work between O3 and O4
Travel Plans
- Travel (Week of 9/16):
- Takahashi:
- Sato:
- Hirata:
- Shoda:
- Fujii: 14 or 15 - 30
- Tanaka:
- Fabian: JPS
- Okutomi: JPS
- Travel (Week of 9/23):
- Takahashi:
- Sato:
- Hirata:
- Shoda: Vacation: 9/26 - 10/1
- Fujii:
- Tanaka:
Next meeting
On 2019/9/20(Fri)