|
Size: 1403
Comment:
|
Size: 938
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 1: | Line 1: |
| The Input Mode Cleaner is a suspended triangular cavity. Each mirror of the triangle is 0.25 kg, 3" in diameter and 1" thick. | = Mode Cleaner = |
| Line 3: | Line 3: |
| The input mode cleaner length is ~12 m (24 m round trip), the Finesse is ~1300. | . 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. |
| Line 7: | Line 9: |
| attachment:MC-Schematic.pdf | |
| Line 9: | Line 10: |
| === WFS === | |
| Line 11: | Line 11: |
| 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. | == 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/2867 . http://nodus.ligo.caltech.edu:8080/40m/2870 == WFS == . [[MC WFS]] == Analog circuits == . attachment:MC-Schematic.pdf |
| Line 14: | Line 28: |
| Line 17: | Line 30: |
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. = Documents = * [http://www.ligo.caltech.edu/docs/T/T020145-00.pdf LIGO-D050379-C], "OMC4 Assembly" * [http://www.ligo.caltech.edu/docs/T/T020145-00.pdf LIGO-D050366-B], "OMC Bezel" * [http://www.ligo.caltech.edu/docs/T/T020145-00.pdf LIGO-D050369-C], "OMC Body" * [http://www.ligo.caltech.edu/docs/T/T020145-00.pdf LIGO-D050370-B], "OMC Cover" * [http://www.ligo.caltech.edu/docs/T/T020145-00.pdf LIGO-E050336-00], "DCN OMC ASSY 40M" |
Mode Cleaner
- 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
Beam centering
WFS
Analog circuits
- attachment:MC-Schematic.pdf
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"