SR3 suspension information


position

FARO measurement

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

GAS-LVDT calibration

IP-LVDT calibration

Sensor

Efficiency [um/cnt]

LVDT H1

LVDT H2

LVDT H3

Geophone calibration

Frequency response

Geophone's frequency response to the ground velocity:

Sensor

S/N

Generator constant (nominal) [V/(m/s)]

Damping ratio (estimated)

Resonant frequency [Hz]

GEO H1

#

GEO H2

#

GEO H3

#

Noise

Sensor

Noise [m/rtHz] @ 0.1 Hz

Noise [m/rtHz] @ 10 Hz

GEO H1

GEO H2

GEO H3

Calibration

actuation efficiency

Polarity is determined so that an +offset at the COILOUTF applies +yaw force in each actuator.

COIL

sign

TM-H1

TM-H2

TM-H3

TM-H4

Diagonalization matrix

H1

H2

H3

To:

**

**

**

H1

H2

H3

To:

Long.

Trans.

Yaw

Long.

Trans.

Yaw

To:

H1

H2

H3

Stepper motor

See also: Stepper motor setup

Epics channel name: K1:STEPPER_***_IP

Driver IP address: 10.68.150.**

Motor 0

Motor 1

Motor 2

Motor 3

Motor 4

Motor 5

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