= [OBSOLETE] Wire Position Sensors or Violine mode monitors (Room Temperature) = '''''Related subgroups:''''' VIS, VAC, CRY Proper name for this subsystem should be discussed based on its primal functionality. ---- <> == Scope == Senising absolute position of the wires utilized in vibration isolation system. With the sensor's output, we can determine the (absolute?) position of each test mass. Operating temperature: here the system is assumed to be utilized at room temperature, not in cryogenic temperature. == Applicable Documents == Not yet be determined well. == General Description == Not yet be considered well. === Functions === * Sensing absolute motions of the wires used in the vibration isolation system. Even if the Vibration Isolation subgroup decides that the priority of this subsystem would be low, we would, in the near future, need such system for commissioning LCGT or after that. === Naming Conventions === TBD === Locations === * BS chamber * ITM chambers (X,Y) * ETM chambers (X,Y) * PRC chambers (dummyPRC, PR2, PR3) * SRC chambers (dummySRC, SR2, SR3) * MC chambers (MC1, MC2...) == Requirements == * Sensor noise should be less than xxx. * Its size should be as compact as possible. == Characteristics == TBD == Inspection plans == TBD == Procurement process and plans == TBD == Links == * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=418|JGW-­G1100418]]