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⇤ ← Revision 1 as of 2020-05-11 10:55:32
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| * Write the diameter of the beam determines the linear range of the QPD as a beam displacement sensor. * Point out that the oplev is expected to be limited by the seismic motion. * Say it is not easy to measure directly the oplev sensitivity but it is possible to set an upper limit to the optic rms displacement and velocities. |
* Write the diameter of the beam determines the linear range of the QPD as a beam displacement sensor. (Fabian.) * Point out that the oplev is expected to be limited by the seismic motion. (Fabian.) * Say it is not easy to measure directly the oplev sensitivity but it is possible to set an upper limit to the optic rms displacement and velocities. (Fabian.) |
Describe KAGRA/Subgroups/VIS/TypeB/PaperTODOlist here.
Introduction
The mechanical system
Sensors and actuators for control
OSEMs
LVDTs
Optical lever
Where the displacement calibration comes from: relativeposition of components measured with ruler, dimensions given by the 3D-CAD, QPD displacement calibration and comparison with IP displacement.
Typical extent of coupling after diagonalization.
Typical measuring range.
- Write the diameter of the beam determines the linear range of the QPD as a beam displacement sensor. (Fabian.)
- Point out that the oplev is expected to be limited by the seismic motion. (Fabian.)
- Say it is not easy to measure directly the oplev sensitivity but it is possible to set an upper limit to the optic rms displacement and velocities. (Fabian.)
Geophones
Control and performance
What we have
What we aim for