SR3 suspension information


position

FARO measurement

GAS default height (LVDT readout)


suspension parameters

resonant frequencies

KAGRA/Subgroups/VIS/TypeB/SR3detail/SRresFreqs_v2.pdf

position of the COM

calculated from the resonant frequencies.


sensor & actuator parameters

Oplev calibration

OSEM calibration

IM-stage

klog#4846

number#

for which?

calibration factor [um/cnt]

linear range [cnt]

noise level at 10 Hz

No#53

IM-V1

0.078991

1600-12500

No#54

IM-V2

0.079014

1480-12600

No#55

IM-V3

0.083248

1500-12000

No#56

IM-H1

0.074347

1390-14200

No#57

IM-H2

0.070756

1370-14700

No#58

IM-H3

0.088711

1450-11100

sr3imv1osem.png sr3imv2osem.png sr3imv3osem.png

sr3imh1osem.png sr3imh2osem.png sr3imh3osem.png

GAS-LVDT calibration

GAS name

optimal frequency

optimal load

optimal height of the keystone

LVDT linear range?

Fishing rod range?

Note

TF

SF-B2-6

0.32 Hz

166.40 kg

67.8 mm

64[mm] to 66.5[mm]

63.5[mm] to 67.5[mm]

k#4720

BF-No7

0.39 Hz

53.17 kg

64.9

64[mm] to 66.5[mm]

64.2[mm] to 66.5[mm]

k#4654

k#4650

Sensor

Efficiency [um/cnt]

F0-LVDT

SF-LVDT

0.08845

BF-LVDT

0.05497

sr3sflvdt20180504.png sr3bf-calibration-2018-4-5.png

IP-LVDT calibration

Sensor

Efficiency [um/cnt]

Noise level at 10 Hz

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 polarization

TM-stage

COIL

sign

H1

H2

H3

H4

IM-stage

COIL

sign

H1

H2

H3

V1

V2

V3

IP-stage

COIL

sign

H1

H2

H3

Diagonalization matrix

H1

H2

H3

To:

**

**

**

H1

H2

H3

To:

Long.

Trans.

Yaw

Long.

Trans.

Yaw

To:

H1

H2

H3


actuation efficiency


Stepper motor

See also: Stepper motor setup

Assignment

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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Epics channel name: K1:STEPPER_***_GAS

Driver IP address: 10.68.150.**

Motor 0

Motor 1

Motor 2

Motor 3

Motor 4

Motor 5

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Adjustable range


Related Link