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Size: 878
Comment:
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Size: 929
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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| 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 = . The Input Mode Cleaner is a suspended triangular cavity. Each mirror of the triangle is 0.25 kg, 3" in diameter and 1" thick. |
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| [[Installing the Input Mode Cleaner board]] | |
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| attachment:MC-Schematic.pdf | |
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| === Beam centering === http://nodus.ligo.caltech.edu:8080/40m/2863 |
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| http://nodus.ligo.caltech.edu:8080/40m/2864 | == Beam centering == . http://nodus.ligo.caltech.edu:8080/40m/2863 |
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| http://nodus.ligo.caltech.edu:8080/40m/2867 | . http://nodus.ligo.caltech.edu:8080/40m/2864 |
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| http://nodus.ligo.caltech.edu:8080/40m/2870 | . http://nodus.ligo.caltech.edu:8080/40m/2867 |
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| === WFS === [[MC WFS]] |
. http://nodus.ligo.caltech.edu:8080/40m/2870 == WFS == . [[MC WFS]] == Analog circuits == . [attachment:MC-Schematic.pdf common mode servo circuit board] |
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
WFS
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"