Differences between revisions 5 and 6
⇤ ← Revision 5 as of 2018-04-24 16:42:12 →
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Editor: AyakaShoda
Comment:
← Revision 6 as of 2018-05-16 17:00:57 → ⇥
Size: 989
Editor: AyakaShoda
Comment:
Deletions are marked like this. Additions are marked like this.
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== LVDT coil resistance ==
'''SF'''
 * Primary: 72.5 Ohm
 * Secondary: 200 Ohm
 * Actuator: 106 Ohm
'''BF'''
 * Primary: 81.6 Ohm
 * Secondary: 202 Ohm
 * Actuator: 114 Ohm

PRM 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. LVDT coil resistance
    5. actuation efficiency
  4. Related Link

position

FARO measurement

  • mirror position offset relative to the tank: (+4.7, +4.6, -1.5)
    • NOTE: this was measured before inner frame tilt was fixed.

  • details

GAS default height (LVDT readout)

suspension parameters

resonant frequencies

position of the COM

calculated from the resonant frequencies.

sensor & actuator parameters

Oplev calibration

OSEM calibration

LVDT calibration

LVDT coil resistance

SF

  • Primary: 72.5 Ohm
  • Secondary: 200 Ohm
  • Actuator: 106 Ohm

BF

  • Primary: 81.6 Ohm
  • Secondary: 202 Ohm
  • Actuator: 114 Ohm

actuation efficiency

Related Link

KAGRA/Subgroups/VIS/TypeBp/PRM (last edited 2018-05-16 17:04:24 by AyakaShoda)