The Mode Cleaner is a suspended triangular cavity. Each mirror of the triangle is 0.25 kg, 3" in diameter and 1" thick.
The mode cleaner length is ~12 m (24 m round trip), the Finesse is ~1300.
Installing the Mode Cleener board
attachment:MC-Schematic.pdf
WFS
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.