Size: 4748
Comment:
|
Size: 4748
Comment:
|
Deletions are marked like this. | Additions are marked like this. |
Line 16: | Line 16: |
[X-end] * Adjusted the weight of cryo-payload (CP). * Adjusted the height of F1, F2, and F3 using the FRs. The height of BF was set to 80mm. * Set the height of F0 keystone to 5.5mm adjusting the weight on the keystone. * Aligned the CP using the yaw adjustment screw in F0. * Adjusted the position of secondary coils for the BF damper. * Released the IP. Adjusted the horizontal FRs. Applied the DC control. * Closed the top chamber. |
|
Line 27: | Line 36: |
[X-end] * Adjusted the weight of cryo-payload (CP). * Adjusted the height of F1, F2, and F3 using the FRs. The height of BF was set to 80mm. * Set the height of F0 keystone to 5.5mm adjusting the weight on the keystone. * Aligned the CP using the yaw adjustment screw in F0. * Adjusted the position of secondary coils for the BF damper. * Released the IP. Adjusted the horizontal FRs. Applied the DC control. * Closed the top chamber. |
Agenda/Minutes of the VIS Meeting on 2018/3/30
2018/3/30 13:30 -
Participants:
Progress report
Schedule Chart
Type-A : (PDF/MPP)
Type-B: (PDF/MPP)
Type-A (Takahashi)
Past week report
[X-end]
- Adjusted the weight of cryo-payload (CP).
- Adjusted the height of F1, F2, and F3 using the FRs. The height of BF was set to 80mm.
- Set the height of F0 keystone to 5.5mm adjusting the weight on the keystone.
- Aligned the CP using the yaw adjustment screw in F0.
- Adjusted the position of secondary coils for the BF damper.
- Released the IP. Adjusted the horizontal FRs. Applied the DC control.
- Closed the top chamber.
[X-front]
- Cabled the LVDT-Actuator and the FR in the F1.
- Mounted the F1 onto the EQ stop with the maraging wire.
- Cabled between the F2 and the F1.
- Calibrated the LVDT of F1.
- The height of keystone was too low without additional weight on the F2.
- Compressed four blades.
- Replaced the blade of FR from the F2 type to the F1 type.
- Measured the transfer functions. The frequency of F1 was 0.3Hz.
- Found that the F3 is not working.
- Disassembled the F1 stage to lift up the F3.
Plan for coming weeks
[X-front]
- Recover the F3.
- Go buck to the F1 stage.
- Prepare for the pre-isolator.
Type B (Mark)
Past week report
Report for week of 3/26
BFs:
- BF No. 1:
- Fujii-san finished tuning. Optimal load: 52.15[kg]. Resonance frequency: 0.37[Hz]. Optimal height: 64.7[mm].
- We wired the LVDT, Picomotor and Steppermotor.
- We measured the keystone tilt at different points and the differences are within 0.1[mm]
- We added cable clamps to the base.
- BF No.7:
- Tanioka-san and Fujii-san replaced the blades corresponding to the BS for the SR type blades.
- The yoke position was corrected.
- The fishing rod was assembled.
- Compression tuning is ongoing.??
SFs:
- Hirata-san and Tanioka-san set up the frame to check the SFs.
- SF (B2-5):
- Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap. The optimal load changes about 250[g]. The cap didn't come out smoothly.
- We measured the keystone tilt at different points, and the differences are within 0.1[mm] (65.5, 65.5, 65.5, 65.4)
- SF (B2-6):
- Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap (On going?).
- We measured the keystone tilt at different points, and the differences are within 0.3[mm] (63.7, 63.5,63.8, 63.8)
SR3/SRM:
- Kozu-kun and Enzo finished the SR3 in-air cabling.
- Enzo prepared the SR3 and SRM rack in parallel (On going).
SR2:
- Hirata-san tested the safety bars in the SR2 area.
- We got new power supply for the SR2 Rack. Before, the power was coming from the BS rack.
BS:
- Kozu-kun and Enzo helped Enomoto-san troubleshooting the BS Oplev issue (On going).
Shipping:
- We received the LBB parts for SR2.
- We received the Payload parts (IM and IRM) this morning.
Plan for coming weeks
Type-Bp (Shoda)
Past week report
Plan for coming weeks
OMMT & OSTM (Ohishi)
Past week report
Plan for coming weeks
Watchdog system (Tanaka)
Past week report
- Business trip plan
March 25(Toyama),26th-29th(Kamioka),30th(Preliminary day Toyama->Tokyo)
Installation place-->PRM,PR3,PR2,BS,SR2(However,only to install. Launch is done on another occasion.)
—>Completed
Prepare necessary documents —>
- JGW-S1808015,S1808016,S1808017,S1808021,S1808022,S1808010,S1808011,S1808012
Plan for coming weeks
- Next install plan
- I plan to install SR3 and SRM after completion of installation.
- Actual launch is scheduled for May or later.
Other site works
Safety
- Incidents:
- Foreseen risks
- Type-A:
- Type-B:
- Type-Bp:
Discussion
Travel Plans
- Travel (Week of 4/2):
- Takahashi:
- Okutomi:
- Sato:
- Ishizaki:
- Mark:
- Hirata:
- Enzo:
- Shoda:
- Ohishi:
- Fujii:
- Tanioka:
- Tanaka:
- Kozu (ICRR):
- Arai (ICRR):
- Travel (Week of 4/9):
- Takahashi:
- Okutomi:
- Sato:
- Ishizaki:
- Mark:
- Hirata:
- Enzo:
- Shoda:
- Ohishi:
- Fujii:
- Tanioka:
- Tanaka:
- Kozu (ICRR):
- Arai (ICRR):
Next meeting
On 2018/4/6(Fri)