• KAGRA
• Subgroups
• VIS
• TypeB
• Characterization

Type B Characterization Tasks

Mark's Section

Things we need to know/measure/document (cf. LIGO-T1100378):

• DAC:
  • Counts to voltage response (with extreme care about single-ended vs. double ended signals.
• HPCD:
  • Internal output resistance.
  • Output noise.
  • Input voltage to output voltage response with open-circuit load.
  • Input voltage to output current response with typical coil load.
  • Voltage monitor calibration.
  • Fast current monitor calibration.
  • Slow current monitor calibration and frequency response.
  • Frequency response of each filter.
  • Which filters are engaged for which RTM states (really a property of the RTM).
• Modified LPCD:
  • Internal output resistance.
  • Output noise.
  • Input voltage to output voltage response with open-circuit load.
  • Input voltage to output current response with typical coil load.
  • Voltage monitor output calibration.
  • Fast current monitor calibration.
  • Slow current monitor calibration and frequency response.
  • Frequency response of each filter.
  • Which filters are engaged for which RTM states (really a property of the RTM).
• Regular LPCD:
  • Internal output resistance.
  • Output noise.
  • Input voltage to output voltage response with open-circuit load.
  • Input voltage to output current response with typical coil load.
  • Voltage monitor output calibration.
  • Fast current monitor calibration.
  • Slow current monitor calibration and frequency response.
  • Frequency response of each filter.
  • Which filters are engaged for which RTM states (really a property of the RTM).

Enzo's Section

Here we will clarify the steps to follow to complete the characterization of the Type B suspensions:

SR3