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Revision 13 as of 2018-09-19 15:52:22
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||Location||LED V||PD V||Coil Ω||Coil Ω @Type 5||Coil Ω @Type5+3||
||R
M||-||-||11.3||14.8||||
||IRM||1.051||0.47||11.3||14.8||||
||Location||LED V||PD V||Coil Ω||Coil Ω @Type 5||Coil Ω @SatAmp||Coil Ω @Rack||Notes||
||
TM Nom||-||-||11.3||14.8|| ||
||H1||-||-||-||20.8||26.5||klog 6255||
||H2||-||-||-||22.5||28.3||klog 6255||
||H3||-||-||-||24.9||30.7||klog 6255||
||H4||-||-||-||21.1||26.5||klog 6255
||
||IM||1.051||0.47||11.3||14.8|| ||

KAGRA VIS Operations Manual - SR2 Suspension Reference

Cut and Pasted from BS - Needs Checking!!!

Stepper Motor Info

Type

Manufacturer

Model

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

Coil Ω @Motor

Coil Ω @Connector

@Flange

GAS Vertical

Arun Microelectronics (AML)

D42.2-HX

green/grey//black/white

5.5Ω

7.1Ω

9.4Ω

PI Yaw

Phytron

VSS 25.200.0.6

yellow/red//blue/green

5.2Ω

PI Horizontal

??

??

Stepper

Controller

Channel

Effect of "Left" Cmd

BF GAS

10.68.150.50

0

Keystone Up

SF GAS

10.68.150.50

1

Keystone Up

F0 GAS

10.68.150.50

2

Keystone Up

PI H0

10.68.150.51

0

IP Clockwise

PI H1

10.68.150.51

1

IP Clockwise

PI H2

10.68.150.51

2

IP Clockwise

PI Yaw

10.68.150.51

3

SF/... Clockwise

Pico Info

Pico

Controller

Channel

Colors

Effect of "+" Cmd

IM_PIT

10.68.150.16=BS_IM

1

red/white

joystick UP = HR beam down, positive pitch; klog 6137

IM_ROL

10.68.150.16=BS_IM

2

red/white

joystick UP = HR beam left, positive roll; klog 6137

IM_YAW

10.68.150.16=BS_IM

3

red/white

joystick UP = IM clockwise, negative yaw; klog 6137

BF_1

10.68.150.17=BS_BF

1

red/white

BF_2

10.68.150.17=BS_BF

2

red/white

LVDT Info

LVDT Coil Info

Measured

Type

Primary/Single/IN/1-6

Secondary/Double/OUT/2-7

Actuation/ACT/3-8

Reference

GAS Vertical

117.4 Ω

??75.4, 102.5 Ω

214.0 Ω

2018-06-26

PI Horizontal 1/3

56.6 Ω

118.4 Ω

131.2 Ω

2018-06-28

PI Horizontal 2/3

55.5 Ω

121.5 Ω

129.6 Ω

2018-06-28

PI Horizontal 3/3

55.4 Ω

122.9 Ω

129.8 Ω

2018-06-28

LVDT Coil Info SEPTEMBER

Measured

Type

Primary/Single/IN/1-6

Secondary/Double/OUT/2-7

Actuation/ACT/3-8

Reference

PI Horizontal 1/3

130.3 Ω

62.6 Ω

137.2 Ω

2018-09-03

PI Horizontal 2/3

125.9 Ω

63.7 Ω

138.2 Ω

2018-09-03

PI Horizontal 3/3

129.1 Ω

62.8 Ω

136.9 Ω

2018-09-03

LVDT Driver Data

LVDT Driver S.N.

Left card

Stage

Resistor value [ohm]

Reference Signal

Gain

Right card

Stage

Resistor value [ohm]

Reference Signal

Gain

SR2: SN 7777777

R0

BF GAS

59.2

4. Vpp

4./5.02 = 0.

R0

PI LVDT#1

50.1

4. Vpp

4./5.02 = 0.

R1

SF GAS

36.3

4. Vpp

4./5.02 = 0.

R1

PI LVDT#2

50.6

4. Vpp

4./5.02 = 0.

R2

F0 GAS

59.6

4. Vpp

4./5.02 = 0.

R2

PI LVDT#3

51.2

4. Vpp

4./5.02 = 0.

R3

Not used

59.5

4. Vpp

4./5.02 = 0.

R3

Not used

50.0

4. Vpp

4./5.02 = 0.

LVDT Calibration Info

Actual SR2 Data (not BS).

LVDT

Slope (cts/µm)

Gain (µm/ct

Nominal (cts)

BF GAS

6.262

0.1600

-3425

SF GAS

-

-

-

PI GAS

-

-

-

PI H0

-

-

-

BF H1

-

-

-

OSEM Info

Location

LED V

PD V

Coil Ω

Coil Ω @Type 5

Coil Ω @SatAmp

Coil Ω @Rack

Notes

TM Nom

-

-

11.3

14.8

H1

-

-

-

20.8

26.5

klog 6255

H2

-

-

-

22.5

28.3

klog 6255

H3

-

-

-

24.9

30.7

klog 6255

H4

-

-

-

21.1

26.5

klog 6255

IM

1.051

0.47

11.3

14.8

Magnet Info

Location

Size (mm)

Number

Material

BS (Old)

3xØ6

4

NdFeB

BS (New)

3xØ2

4

SmCo

IM

10xØ10

2x6

NdFeB??

SR Damper

10x10x12

72

NdFeB??

LBB Damper

10x10x12

48

NdFeB??

Filter Info

Stage

f (Hz)

klog

m (kg)

klog

k (N/m)

klog

kFR (N/m)

klog

F0

252.8

4371

SF

162.9+0.8=163.7

4266

BF

53.1-1.048=52.1

3971, 4002

KAGRA/Subgroups/VIS/OpsManual/TypeB/SR2Data (last edited 2019-04-09 15:22:58 by MarkBarton)