Differences between revisions 3 and 4

20181003

Today's activities

Workers: Akutsu, K. Nagano, Aritomi K. Tanaka, Kita

Delivered an oplev pylon.
Delivered a K400 flange (VN7877 by Mirapro), which had been washed at Mirapro.
Checked the polarity of LVDTs and actuator coils, and compared with the one measured in Mitaka shown here.
- When we took up the side of the table where LVDT-V1 was installed, the raw LVDT-V1 signal (VIS-TMSX_LVDTINF_**_INMON) showed negative signal; in the same manner, V2-> positive, V3-> negative, and all the horizontal signals (H1,H2,H3) were positive; they were consistent with those of in Mitaka.
- When we input plus (about +3000 counts) signal to actuator coil H1, the raw LVDT H1, H2, and H3 (VIS-TMSX_LVDTINF_**_INMON) showed all positive; in the same manner, ActCoil H2 positive -> all LVDT-Hx positive, ActCoil H3 positive -> all LVDT-Hx positive, ActCoil V1 positive (+5000 counts) -> LVDT-V1 negative, ActCoil V2 positive -> LVDT-V2 positive, ActCoil V3 positive -> LVDT-V3 negative.
- To translate the results of the actuator coils, considering the polarity of the raw LVDT signals, all the actuator coils were set to actuate the table to the positive directions when we input positive counts to them; the positive directions' here followed the difinitions in here; positive yaw is counter clock wise from the top view, and upward is positive vertical.

Next plan

Connect the cables to flanges.
Configure the digital models properly.
Engage the logical channels and the assigned physical channels.
Install BRT on TMS-VIS.
Clean the sides of the optics to be installed into the vacuum chamber. (Ethanol+Acetone wiping with vectra alpha, then First Contact.) See here.
Detach the remaining white tapes just before closing the chamber; be noted that there are white tapes on the PEEK connectors at the inside of the flanges.
Torque completely the bolts which are fixing the upper and the lower base plates.
Insert metal gaskets before torquing the ICF203 flanges with Dsub connectors.
Make clean the cabling... ask to VIS??
Check horizontal actuation
Calibrate LVDT again
Put calibration factor of Geophones
Install Tome-Kanagu for Dsub in DAC0 port #4
Put tags to cables
Align BRT
Start to install GPT part
Damping of TMS-VIS

Wanted!

Tester!! lend from DGS or PEM??
M8 eyebolts for managing the dummy weight plates...
First contact to clean the side diameter of the optics.
Need a signal generator for LVDTs
A document for learning how to release or fix the suspended tables (by Uraguchi?).
Cable tags
IR mirrors (4 PYD-20, 3 PYD-10)
Tome-Kanagu for Dsub
Power taps
ONE DAC PORT!!!!

KAGRA/Subgroups/AOS/TMSX_O3/2018-10-03 (last edited 2018-10-04 12:24:02 by KojiNagano)

-  ⇤ ← Revision 3 as of 2018-10-02 23:23:55 → 
  Size: 2143
  Editor: TomotadaAkutsu
  Comment:
+   ← Revision 4 as of 2018-10-02 23:31:50 → ⇥
  Size: 3034
  Editor: TomotadaAkutsu
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 9:
-  * When we took up the side of the table where LVDT-V1 was installed, the raw LVDT-V1 signal (VIS-TMSX_LVDTINF_**_INMON) showed minus signal; in the same manner, V2-> positive, V3-> negative, and all the horizontal signals (H1,H2,H3) were positive; they were consistent with those of in Mitaka.
  *
+  * When we took up the side of the table where LVDT-V1 was installed, the raw LVDT-V1 signal (VIS-TMSX_LVDTINF_**_INMON) showed '''negative''' signal; in the same manner, V2-> positive, V3-> '''negative''', and all the horizontal signals (H1,H2,H3) were positive; they were consistent with those of in Mitaka.
  * When we input plus (about +3000 counts) signal to actuator coil H1, the raw LVDT H1, H2, and H3 (VIS-TMSX_LVDTINF_**_INMON) showed all positive; in the same manner, ActCoil H2 positive -> all LVDT-H''x'' positive, ActCoil H3 positive -> all LVDT-H''x'' positive, ActCoil V1 positive (+5000 counts) -> LVDT-V1 '''negative''', ActCoil V2 positive -> LVDT-V2 positive, ActCoil V3 positive -> LVDT-V3 '''negative'''.
  * To translate the results of the actuator coils, considering the polarity of the raw LVDT signals, all the actuator coils were set to actuate the table to the '''''positive directions''''' when we input positive counts to them; the '''''positive directions'''' here followed the difinitions in [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/subgroup/AOS/TMS-VIS0|here]]; positive yaw is counter clock wise from the top view, and upward is positive vertical.