Differences between revisions 6 and 7
⇤ ← Revision 6 as of 2018-05-16 17:00:57 →
Size: 989
Editor: AyakaShoda
Comment:
← Revision 7 as of 2018-05-16 17:04:24 → ⇥
Size: 1107
Editor: AyakaShoda
Comment:
Deletions are marked like this. Additions are marked like this.
Line 26: Line 26:
== OSEM calibration ==
== LVDT calibration ==
== LVDT coil resistance ==		 == OSEM ==
=== Calibration ===
=== Coil resistance ===
'''TM'''
 * H1: 15.7 Ohm
 * H2: 15.8 Ohm
 * H3: 16.0 Ohm
 * H4: 15.8 Ohm
== LVDT ==
=== Calibration ===
=== Coil resistance ===

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
      1. Calibration
      2. Coil resistance
    3. LVDT
      1. Calibration
      2. Coil resistance
    4. 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

Coil resistance

TM

  • H1: 15.7 Ohm
  • H2: 15.8 Ohm
  • H3: 16.0 Ohm
  • H4: 15.8 Ohm

LVDT

Calibration

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)