= [OBSOLETE] Optical Sensors and Electromagnetic Actuators (Room Temperature) = '''''Related subgroups:''''' VIS, VAC, CRY ---- <> == Scope == Sensors and Actuators for 6 DoF motions of the intermediate masses of vibration isolation system Type-B. This is the LIGO's OSEM-like subsystem that consists of an optical sensor and an electromagnetic actuator (OSEM). Operating temperature: here the system is assumed to be utilized at room temperature, not in cryogenic temperature. == Applicable Documents == == General Description == Things have been already considered a little in the vibration isolation subgroup. === Functions === * Sensing the local motions of intermediate masses of vibration isolation system Type-B. * Actuating the local motions of intermediate masses of vibration isolation system Type-B. === 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. * Actuator noise should be less than xxx. * Actuator's dynamic range should be greater than xxx. * Its size should be as compact as possible. * At least horizontal degrees of freedom (X,Y) * Preferably a vertical sensor (Z) and side * The sensors have to be rigidly mounted on the ground so that these are useful for remembering the position of the mirror and recording the drifts. == Characteristics == TBD == Inspection plans == TBD == Procurement process and plans == TBD == Links == * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=524|JGW-­G1100524]] * [[http://www.amaldi9.org/abstracts/209/Carbone_-_Sensors_and_Actuators_for_the_Advanced_Ligo_Suspensions_sm.pdf|L. Carbone et al., Sensors and Actuators for the Advanced LIGO Suspensions, Amaldi9 (2011)]] * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=418|JGW-­G1100418]]