BS suspension information

Contents

  1. position
    1. FARO measurement
    2. GAS default height (LVDT readout)
  2. suspension parameters
    1. resonant frequencies
    2. position of the COM
  3. sensor & actuator parameters
    1. Oplev calibration
    2. OSEM calibration
    3. LVDT calibration
    4. actuation efficiency
  4. Related Link

position

FARO measurement

GAS default height (LVDT readout)

suspension parameters

resonant frequencies

KAGRA/Subgroups/VIS/TypeB/BSdetail/BSresFreqs.pdf

* There is a resonance at 4 kHz, which might be an internal mode of the optic.

position of the COM

calculated from the resonant frequencies.

sensor & actuator parameters

Oplev calibration

OSEM calibration

LVDT calibration

actuation efficiency

Related Link