Agenda/Minutes of the VIS Meeting on 2020/1/10
2020/1/10 14:00 - 15:23
Participants: Okutomi, Aso, Takahashi, Sato, Tanaka, Ishizaki,Hirata, Shoda
Progress report
General topics
- VIS Guardians are under renovation.
- They use unified state names among the different suspension types.
New damping strategy (klog#12368)
Type-A
Past week report
- Terrence's paths implemented in the RT models.
- They are working will in ASC.
- High power coil drivers for TM actuators installed with WD disabled.
- Only ITMY is still not ready. → Next week
- Actuator balancing performed.
ITMX: klog#12348
ITMY: klog#12350
ETMX: klog#12347, klog#12426
- Local damping control updates
ITMX pitch RMS motion drastically improved. (klog#12353)
- BFL feedback loop could damp the ~0.97 Hz longitudinal mode ([[|klog]])
- Photo-sensor damping loops under implementation.
- Besides that, PS efficiency balancing and decoupling ongoing.
Some GAS controls got saturated again due to the temperature drifts. (klog#12379)
- We left them as they are for the moment and expect that the temperature adjustment could recover the better situation again.
OpLev light sources replaced in ETMX and EMTY. (klog#12440)
Type B
Past week report
- Local damping control updates
BS IM pitch loop modified. (klog#12343)
SR2_IM picomotor got lost in the control network. (klog#12403)
- The IP address of its driver was reset with wired connection.
Plan for coming weeks
Type-Bp
Past week report
PR3 was kicked due to the length control. Health check was done, and we found that PR3 seems to be rubbing a bit. (klog12396
- We will see how it goes with this situation, since there is no problem so far even it is not in a good state.
Plan for coming weeks
OMMT & OSTM
Past week report
- Glued magnets and standoffs to the mirror and installed the mirror to the suspension.
- Since one magnet was took off during the adjustments of OSEMs, the mirror went to regluing.
Plan for coming weeks
VIS electronics
Past week report
Plan for coming weeks
Other site works
Safety
- Incidents:
Discussion
- Mechanical design of limit switch for FR
Travel Plans
- Travel (Week of 1/13):
- Takahashi:
- Sato: 15-21?
- Hirata:
- Shoda:
- Fujii:
- Tanaka:
- Travel (Week of 1/20):
- Takahashi:
- Sato:
- Hirata:
- Shoda:
- Fujii:
- Tanaka:
Next meeting
On 2020/1/17(Fri)