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 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7588|Wide Angle Baffle assembly-procedure manual (Zeidler)]]
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4660|Calculations regarding the back-scattering of different Wide Angle Baffle designs (Zeidler)]]
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{{attachment:burndy_cryostat.png | Diagram|width="300" }}
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=== OpLev ===

 * Optical lever installed at the +X/+Y side of the IYC
 * Path-length inside the chamber (viewport to viewport): ~3000 mm

Wide Angle Baffle Cooling Test 2018

<< <  2018 / 1 >  >>
Mon Tue Wed Thu Fri Sat Sun
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8 9 10 11 12 13 14
15 16 17 18 19 20 21
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29 30 31        

<< <  2018 / 2 >  >>
Mon Tue Wed Thu Fri Sat Sun
      1 2 3 4
5 6 7 8 9 10 11
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19 20 21 22 23 24 25
26 27 28        

<< <  2018 / 3 >  >>
Mon Tue Wed Thu Fri Sat Sun
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Task list

Note: some of the tasks can be done in parallel.

  • Place/install the WAB suspension.
  • Measure several relative dimensions to get useful information for the future commissioning; concretely speaking:
    • What....?

  • Test the saving mode of the WAB suspension.

  • Don't forget to replace the damping magnets to SmCo ones.

    • What is the requirement to say the damping is sufficient...?
  • Connect electric cables (with checking) in the IYC chamber.

    • 3 photosensors; in each photosensor head, two PDs should be connected parallel. Need to calibrate the response of each sensor head...

    • 2 heaters; should be connected parallel??
    • 1 coil for actuation.

    • 6 thermometers with (extended?) patch cables made of phospher bronze; the extended double twisted pare cables will be delivered on Jan 26

  • Connect 4 heat links.
  • Check oplev signals.
  • Connect cables the outside as well.
  • Make a realtime model to monitor.
  • Take interface with Tcam.
  • Make a plan to do leak check before cooling down.
  • Don't forget to add some heat links (Cu?) to the top of the suspension...

PIN Assign

  • Summary of the pin assign of burndy connector inside the cryostat.

NOTE: The meaning of color for thermometer cable is
RED = I- , YELLOW = I+ , GREEN = V- , BLACK = V+

P22

Pin Name

Resistance

Equipment

Assign

Comment1

Comment2

Connection

A

75 ohm

Thermometer

V-

Green

Cryocon CH A

○

B

75 ohm

Thermometer

V+

Black

○

C

4 ohm

Thermometer

I-

Red

○

D

4 ohm

Thermometer

I+

Yellow

○

E

75 ohm

Thermometer

V-

Green

Cryocon CH B

○

F

75 ohm

Thermometer

V+

Black

○

G

4 ohm

Thermometer

I-

Red

○

H

4 ohm

Thermometer

I+

Yellow

○

J

75 ohm

Thermometer

V-

Green

Cryocon CH C

○

K

75 ohm

Thermometer

V+

Black

○

L

4 ohm

Thermometer

I-

Red

○

M

4 ohm

Thermometer

I+

Yellow

○

N

Blank

P

75 ohm

Thermometer

V-

Green

Cryocon CH D

○

R

75 ohm

Thermometer

V+

Black

○

S

4 ohm

Thermometer

I-

Red

○

T

4 ohm

Thermometer

I+

Yellow

○

U

75 ohm

Thermometer

V-

Green

Cryocon CH E

○

V

75 ohm

Thermometer

V+

Black

○

W

4 ohm

Thermometer

I-

Red

○

X

4 ohm

Thermometer

I+

Yellow

○

Y

Blank

　

P23

Pin Name

Resistance

Equipment

Assign

Comment1

Comment2

Connection

A

75 ohm

Thermometer

V-

Green

Cryocon CH F

×

B

75 ohm

Thermometer

V+

Black

×

C

4 ohm

Thermometer

I-

Red

×

D

4 ohm

Thermometer

I+

Yellow

×

E

75 ohm

PS PD

V-

×

F

75 ohm

PS PD

V+

×

G

4 ohm

PS LED

I-

×

H

4 ohm

PS LED

I+

×

J

75 ohm

PS PD

V-

×

K

75 ohm

PS PD

V+

×

L

4 ohm

PS LED

I-

×

M

4 ohm

PS LED

I+

×

N

Blank

P

75 ohm

PS PD

V-

×

R

75 ohm

PS PD

V+

×

S

4 ohm

PS LED

I-

×

T

4 ohm

PS LED

I+

×

U

75 ohm

CM Act.

I-

×

V

75 ohm

CM Act.

I+

×

W

4 ohm

Heater

I-

○

X

4 ohm

Heater

I+

○

Y

Blank

Diagram

DAQ

Real-time computer: k1???

Slot

Item

Assigned to

S/N

42

<blank>

41

<blank>

40

<blank>

39

<blank>

38

<blank>

37

<blank>

36

<blank>

35

<blank>

34

<blank>

33

<blank>

32

<blank>

31

<blank>

30

<blank>

29

<blank>

28

<blank>

27

<blank>

26

<blank>

25

<blank>

24

<blank>

23

<blank>

22

<blank>

21

<blank>

20

<blank>

19

<blank>

18

<blank>

17

<blank>

16

<blank>

15

<blank>

14

<blank>

13

<blank>

12

AI Chassis

DAC0

SN???

11

AA Chassis

ADC0

SN???

10

<blank>

9

I/O Chassis

SN???

8

<blank>

7

<blank>

6

<blank>

5

<blank>

4

<blank>

3

<blank>

2

<blank>

1

<blank>

0

<blank>

OpLev

  • Optical lever installed at the +X/+Y side of the IYC
  • Path-length inside the chamber (viewport to viewport): ~3000 mm

LCGT/subgroup/AOS/WideAngleBuffle (last edited 2018-07-18 15:17:37 by TomotadaAkutsu)