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| * PR3 TF looks OK now. * PRM TM TF is strange. Maybe the EQ stop is touching. |
Agenda/Minutes of the VIS Meeting on 2019/2/22
2019/2/22 14:00 - 15:15
Participants: Takahashi, Tanaka, Hirata, Enzo, Mark, Fabian, Okutomi, Fujii, Terrence, Lucia, Eleonora, Ohishi, Aso
Progress report
Schedule Chart
Site work schedule: [[|XLSX]]
Type-A : (PDF/MPP)
Type-B: (PDF/MPP)
Type-C: (XLSX)
Type-A (Takahashi)
Past week report
- Aligned the ITMY by the yaw FR in the TF (by Lucia).
Plan for coming weeks
- Adjustment of the TF, the BF damper, and the IP in X-end (Feb 26-28).
Type B (Mark)
Report for the week of 2/18
- On Friday and Saturday last week the pumpdown of the central area took place. We monitored the drift in the four Type B IPs.
- During the week we recovered the four suspensions successfully: we recovered the alignment of IMs, GAS filters, IPs, oplevs and measured TFs.
- Terrence, Enzo and Mark installed the length sensing components in SR2 oplev. It's working now and we should use it now to measure the optic's corresponding TF.
The SRM IM is still drifting but the speed is decreasing. Yesterday (Thu) the speed was -81 nrad/min. With the aim of predicting when the drift may stop, Terrence removed offsets from the time series segments and spliced them in order. The work is still on progress.
- Terrence did more work in changing the real-time models.
- Mark did some initial debugging on the stepper reset system, starting with SRM. However there seems to be some model-related problem. A BIO Checker Board gave sensible results for the low 32 bits of DIO card #0 (used for the TM LPCD) but nothing for the high 32 bits (used for steppers, and eventually also the WD). He added the stepper reset stuff to the circuit diagram (D1503660) and made other corrections.
- Guardian, Real-Time Model, Burt, MEDM (by Terrence):
A temporary guardian is programmed to work on the current real-time models. Details can be found in klog http://klog.icrr.u-tokyo.ac.jp/osl/?r=8147.
- DC control blocks and setpoint blocks are added to the real-time models. The feedback from the sensors were changed to negative-feedback. Fixed some mistakes in the real-time models.
- The MEDM overall screen was modified to cope with the changes in the real-time model.
- New model and medm screen is now applied to SR2 and is working fine.
- I modified the medm snapshot button so we have three snapshot options, safe, align and misalign. In safe snapshot, all channels are included. In align and misalign snap, only setpoints and and the DC offset in the OPTIC ALIGN block are included.
- I will modify the guardian to cope with the changes later.
Plan for week of 2/25
- Mark from Tuesday.
- Enzo from Monday lunchtime.
- Continue debugging stepper reset system.
- Continue monitoring SRM yaw drift.
- Install new RTMs and Guardian.
- Debug SRM geophones.
- Setup SRM and SR3 LEN OLs (low priority).
- Work on Type B paper.
Vacation/Travel Info
- Enzo vacation, 3/5 and possibly 3/6.
- Enzo et al. Farewell Party, 3/7.
- Enzo at JPS then final vacation, 3/13-29
- Terrence's last day, 3/29.
Type-Bp
Past week report
- PR3 TF looks OK now.
- PRM TM TF is strange. Maybe the EQ stop is touching.
Plan for coming weeks
OMMT & OSTM (Ohishi)
Past week report
Plan for coming weeks
VIS electronics (Tanaka)
Past week report
Plan for coming weeks
Other site works
Safety
- Incidents:
- Foreseen risks
- Type-A:
- Type-B:
Discussion
Travel Plans
- Travel (Week of 2/25):
- Takahashi: 26-28
- Okutomi:
- Sato:
- Lucia:
- Fabian:
- Mark: 26-1
- Hirata:
- Enzo: 26-1
- Shoda:
- Ohishi:
- Fujii: 25-1
- Tanioka:
- Tanaka:
- Terrence:
- Travel (Week of 3/4):
- Takahashi:
- Okutomi:
- Sato:
- Lucia:
- Fabian:
- Mark: 4-6
- Hirata:
- Enzo:
- Shoda:
- Ohishi:
- Fujii:
- Tanioka:
- Terrence
Next meeting
On 2019/3/1(Fri)