|
Size: 2710
Comment:
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Size: 2867
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 17: | Line 17: |
| * First periscope mirror (GPM1) | * First periscope mirror (GPM1): TFM-50C080532 (Opto-Sigma) |
| Line 19: | Line 19: |
| * Second periscope mirror (GPM2) | * Second periscope mirror (GPM2): TFM-50C080532 (Opto-Sigma) |
| Line 21: | Line 21: |
| * First steering mirror (GST1) | * First steering mirror (GST1): TFM-50C080532 (Opto-Sigma) |
| Line 23: | Line 23: |
| * Second steering mirror (GST2) | * Second steering mirror (GST2): TFM-50C080532 (Opto-Sigma) |
| Line 25: | Line 25: |
| * First lens (GLNS1, f=500) | * First lens (GLNS1, f=500): LA1380-A-ML (Thorlabs) |
| Line 29: | Line 29: |
| * In the end of today's work, we installed DC PD after GST2 temporarily. The gain was set to 0 dB. | * In the end of today's work, we installed DC PD (PDA100A2, Thorlabs) after GST2 temporarily. The gain was set to 0 dB. |
20181006
Today's activities
Workers: Akutsu, K. Nagano
BRT part installation
- Akutsu-san will report
GPT part installation
- We brought five QPD mechanical basis with plastic case which was used to store Dsub cables.
- AFTER QPD INSTALLATION, WE SHOULD RETURN THE BOX TO 低音鏡機械室.
- After BRT part was installed and aligned, we started to install GPT part (in-air part).
- We found that damping of TMS-VIS was not necessary for GPT installation.
Following the design, we installed the beginning part of the green light path, two periscope mirrors, two steering mirrors, and one lenses.
- First periscope mirror (GPM1): TFM-50C080532 (Opto-Sigma)
- Second periscope mirror (GPM2): TFM-50C080532 (Opto-Sigma)
- First steering mirror (GST1): TFM-50C080532 (Opto-Sigma)
- Second steering mirror (GST2): TFM-50C080532 (Opto-Sigma)
- First lens (GLNS1, f=500): LA1380-A-ML (Thorlabs)
- First periscope mirror (GPM1): TFM-50C080532 (Opto-Sigma)
- At first, all mirrors were installed. Then the lens was installed not to change beam position.
- The lens position, i.e. beam profile, was not tuned since the tuning was not so effective without arm cavity locked.
- In the end of today's work, we installed DC PD (PDA100A2, Thorlabs) after GST2 temporarily. The gain was set to 0 dB.
- After all, GPT part looks like below.
The signal was checked like this.
Next plan
- Align and balance the BRT and the TMS-VIS.
- Configure the digital models properly.
- 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.
- Install optics after GBS1
- Install gigE camera
- Modify MEDM screen
- Add DC PD and so on.
Cable Dsub 15pin for TMS-VIS OpLev.
- Modify cabling for DC PD.
- Return plastic box.
- Install rails in digital rack.
- They may be necessary under LVDT distributor, geophone distributor, and WHT board.
- Nagano is not sure it is necessary under HP coil driver.
Wanted!
- A document for learning how to release or fix the suspended tables (by Uraguchi?).
- FIVE QPD electronics boards