[OBSOLETE] Optical Sensors and Electromagnetic Actuators (Room Temperature)
Related subgroups: VIS, VAC, CRY
Contents
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