KAGRA VIS Operations Manual - SR3 Suspension Reference

IP Optimum Position

See klog 7783.

Stepper Driver Info

Stepper

Controller

Channel

"Left"

BF GAS

10.68.150.54

0

Up

SF GAS

10.68.150.54

1

Up

F0 GAS

10.68.150.54

2

Up

PI H0

10.68.150.55

0

??

PI H1

10.68.150.55

1

??

PI H2

10.68.150.55

2

??

PI Yaw

10.68.150.55

3

Clockwise

Fancy Stepper Driver

IP L

+5000 steps -> ≈+??? µm IP-L

IP T

+5000 steps -> ≈+70 µm IP-T

IP Y

+5000 steps -> ≈+??? µrad IP-Y

F0 Y

+50 steps -> ≈-50 µrad OL-Y

Stepper Motor Info

Type

Manufacturer

Model

Coil resistance

Color code (A1/A2//B1/B2)

GAS Vertical

Arun Microelectronics (AML)

D42.2-HX

5.5Ω

green/grey//black/white

PI Yaw

Phytron

VSS 25.200.0.6

5.2Ω

yellow/red//blue/green

PI Horizontal

??

??

Pico Info

Pico

Controller

Channel

Colors

IM_PIT

10.68.150.26=SR3_IM

1

red/white

Joystick Up = +pitch

IM_ROL

10.68.150.26=SR3_IM

2

red/white

IM_YAW

10.68.150.26=SR3_IM

3

red/white

BF_1

10.68.150.27=SR3_BF

1

red/white

BF_2

10.68.150.27=SR3_BF

2

red/white

LVDT Info

LVDT Coil Info

Copied from BS - check!

Type

Primary/Single/IN/1-6

Secondary/Double/OUT/2-7

Actuation/ACT/3-8

GAS Vertical

AWG36, 187Ω, 38 mH

AWG32, 78Ω, 9.5 mH

AWG32, 110Ω, 74 mH

PI Horizontal

250 Ω

320 Ω

155 Ω

Measured

Type

Primary/Single/IN/1-6

Secondary/Double/OUT/2-7

Actuation/ACT/3-8

Reference

GAS Vertical

111.3 Ω

131.2 Ω

208.4 Ω

2018-06-26

PI Horizontal 1/3

55.4 Ω

122.5 Ω

130.3 Ω

2018-06-28

PI Horizontal 2/3

53.3 Ω

120.4 Ω

134.2 Ω

2018-06-28

PI Horizontal 3/3

54.0 Ω

120.9 Ω

133.3 Ω

2018-06-28

LVDT Driver Info

LVDT Driver S.N.

Left card

Stage

Resistor value [ohm]

Reference Signal

Gain

Right card

Stage

Resistor value [ohm]

Reference Signal

Gain

SR3: SN 1807783

R0

BF GAS

60.0

4.90 Vpp

4.90/5.02 = 0.976

R0

PI LVDT#1

50.7

4.90Vpp

4.90/5.02 = 0.976

R1

SF GAS

60.7

4.86 Vpp

4.86/5.02 = 0.968

R1

PI LVDT#2

50.7

4.88 Vpp

4.88/5.02 = 0.972

R2

F0 GAS

60.9

4.86 Vpp

4.86/5.02 = 0.968

R2

PI LVDT#3

50.0

4.88 Vpp

4.88/5.02 = 0.972

R3

Not used

60.7

4.86 Vpp

4.86/5.02 = 0.968

R3

Not used

50.9

4.86 Vpp

4.86/5.02 = 0.968

Magnet Info

Location

Size (mm)

Number

Material

SR

5xØ2

4

SmCo

IM

10xØ10

2x6

SmCo

SR Damper

10x10x12

72

NdFeB??

LBB Damper

10x10x12

48

NdFeB??

Resonant frequency

Stage

Measured resonant frequency [Hz]

Q factor

Assumed resonant frequency (SUMCON) [Hz]

Reference

F0 GAS

0.5

19

0.3

klog 5446

SF GAS

0.34

27.03

0.5

klog 5334

BF GAS

0.417

22.28

0.38

klog 5334

IP

0.33

??

| klog 5926

klog 5926

GAS filter suitable positions

Filter

LVDT readout (µm)

klog

Notes

F0

-542

7900, 8135, 8501

Depends on the F1 position because the F1 fishing rod is not operational.

F1

-721

7900, 8135, 8501

The fishing rod does not work.

BF

0

We require the IM-V OSEM flags to be at the correct position.

Updated models

Name

Data from CAD only

Includes GAS freq.

Change IP leg Stiffness

Change IP Torsional Stiffness

TypeB_SR3_.m

Yes

No

No

No

TypeB_SR3_05092018_enzo_1.m

Yes

Yes

No

No

TypeB_SR3_05092018_enzo_1.m

Yes

Yes

No

No

TypeB_SR3_05092018_enzo_1.m

0.33

Yes

Yes

No

No

Optimum Temperature

See klog 7420.

KAGRA/Subgroups/VIS/OpsManual/TypeB/SR3Data (last edited 2019-04-09 14:59:57 by MarkBarton)