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The 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 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.




= 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]

= Documents and Links =
 * [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"
 * [[RF_ASC]], "Interferometer Wave Front Sensing"

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 and Links

Mode_Cleaner (last edited 2022-08-16 23:41:42 by AnchalguptaATligoDOTorg)