= Overview =
 . All of the interferometer and mode cleaner optics at the 40m are suspended in single pendula.

 . '''SOS:''' MC1, MC2, MC3, BS, PRM, SRM, ITMX, ITMY, ETMX, ETMY


 . {i} The ITMs and ETMs have been upgraded from MOS to SOS to enhance the radiation pressure effects.


= Projects =

 * [[/MagneticSuspension|Magnetic suspension]]
 * Characterization of Tip-Tilts
   . [[ https://nodus.ligo.caltech.edu:30889/wiki/doku.php?id=surf2011:ttsuspension | Summer Project 2011 ]]
 * Hysteresis measurement
 * Diagnolization of Input/Output matrices
   . https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=70898
 * Optimization of oplev servos


= Suspension Properties =
 * [[https://dcc.ligo.org/LIGO-D960001|Mechanical Drawings]]
 * [[Suspensions/Mechanical_Resonances| Mechanical Resonances ]]
 * [[Suspensions/Gluing_Configuration| Gluing Configuration]]
 * Wires
   [[attachment:SOS_music wire_Sep 2016]]
 * Magnets
   [[attachment:SmCo_Procurement.PDF]]
 * Drawings
 * [[Suspensions/Tip_Tilts| Tip Tilts in the recycling cavities]]
 * [[Suspensions/Tip_Tilts_IO | IO Tip Tilts wiring diagram]]
 * [[https://dcc.ligo.org/LIGO-T1100066|Torque values for LIGO screws]]
 * [[http://www.federalscrewproducts.com/torque-chart.htm|Torque values for standard screws]]
= Local Controls =
 * OSEM local damping
   * How they work
   * [[Suspensions/OSEMs| OSEM setups]]
   * [[https://nodus.ligo.caltech.edu:30889/OSEMs/|OSEM catalog]]
   * [[https://docs.google.com/spreadsheets/d/1sgMlwQfXypF20XV-CT_N1c9iLPODHj0X2hHbUgvOwnE/edit#gid=0 | BHD new SOSs OSEM assignment]]
   * [[https://dcc.ligo.org/DocDB/0121/T990089/001/T990089-00%20-%20New%20Sensor.pdf|Useful document on OSEMs with Honeywell LED/PD]]

 * Oplev local dapming
   * How they work
   * [[Suspensions/40m_Optical_lever_lasers| 40m Optical lever lasers]]

= Suspension Related Scripts =
 * [[Computers_and_Scripts/All_Scripts| Drifts]]

 * [[Computers_and_Scripts/All_Scripts| A2L]]

 * f2pratio

 * ugfOL