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Size: 1042
Comment:
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Size: 970
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 = |
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| 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 === WFS === [[MC WFS]] |
. 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 14: | Line 6: |
= 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] |
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= 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 |
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"