|
Size: 1403
Comment:
|
Size: 970
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 5: | Line 5: |
| [[Installing the Input Mode Cleaner board]] | |
| Line 7: | Line 6: |
| attachment:MC-Schematic.pdf | |
| Line 9: | Line 7: |
| === WFS === | |
| Line 11: | Line 8: |
| 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 = Alignment Sensing and Control = . [[MC_WFS|MC Wave Front Sensors]] = Analog circuits = . [attachment:MC-Schematic.pdf common mode servo circuit board] |
| Line 14: | Line 25: |
| Line 17: | Line 27: |
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.
Beam centering
Alignment Sensing and Control
Analog circuits
- [attachment:MC-Schematic.pdf common mode servo circuit board]
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"