|
Size: 1167
Comment:
|
Size: 835
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 3: | Line 3: |
| The input mode cleaner length is ~12 m (24 m round trip), the Finesse is ~1300. | The input mode cleaner length is ~13.5 m (27 m round trip), the Finesse is ~1460. Cavity pole is 3.79kHz. |
| Line 9: | Line 9: |
| === Beam centering === http://nodus.ligo.caltech.edu:8080/40m/2863 http://nodus.ligo.caltech.edu:8080/40m/2864 http://nodus.ligo.caltech.edu:8080/40m/2865 |
|
| Line 11: | Line 17: |
| To adjust the WFS offsets, watch the C1IOO_WFS_HEADS screen and run the script /cvs/cds/caltech/scripts/MC/WFS/McWFS_dc_offsets to ezcaservo the readbacks to zero. | [[MC WFS]] |
| Line 17: | Line 24: |
= OUTPUT MODE CLEANER = The Output Mode Cleaner is mounted into a monolithic copper block cavity, with three fixed mirrors and one PZT length-controlled mirror. The SW drawings are attached below. == SW Output Mode Cleaner Dwgs == attachment:LIGO-D050379-C attachment:LIGO-D050366-B attachment:LIGO-D050369-C attachment:LIGO-D050370-B attachment:LIGO-E050336-00 |
The Input Mode Cleaner is a suspended triangular cavity. Each mirror of the triangle is 0.25 kg, 3" in diameter and 1" thick.
The input mode cleaner length is ~13.5 m (27 m round trip), the Finesse is ~1460. Cavity pole is 3.79kHz.
Installing the Input Mode Cleaner board
attachment:MC-Schematic.pdf
Beam centering
http://nodus.ligo.caltech.edu:8080/40m/2863 http://nodus.ligo.caltech.edu:8080/40m/2864 http://nodus.ligo.caltech.edu:8080/40m/2865
WFS
Documents
[http://www.ligo.caltech.edu/docs/T/T020145-00.pdf LIGO-T020145-00-R], "Characterization and commissioning of digital suspensions for the 40m Mode Cleaner"
[http://www.ligo.caltech.edu/docs/T/T020147-00.pdf LIGO-T020147-00-R], "Characterizing the length sensing and control system of the mode cleaner in the LIGO 40m lab"