Differences between revisions 42 and 77 (spanning 35 versions)
⇤ ← Revision 42 as of 2018-01-31 19:17:12 →
Size: 5072
Editor: kunihiko.hasegawa
Comment:
← Revision 77 as of 2018-02-09 15:33:58 → ⇥
Size: 8580
Editor: SimonZeidler
Comment:
Deletions are marked like this. Additions are marked like this.
Line 10: Line 10:
 * [[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)]]
 * [[https://nbviewer.jupyter.org/urls/dl.dropbox.com/s/niycmhy8178ed0y/WAB20170224.ipynb|Personal calc of WAB's stray light noise by Akutsu]]; due to several uncertain parameters there are several results and no one would know the actual effect!
Line 33: Line 36:
 * Don't forget to add some heat links (Cu?) to the top of the suspension...
Line 37: Line 41:
NOTE:
The meaning of color for thermometer cable is <<BR>>
RED = I- , YELLOW = I+ , GREEN = V- , BLACK = V+
Line 38: Line 46:
||Pin Name||Resistance|| Equipment || Assign || comment1 || comment2 ||
||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||Brank|| || || || ||
||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||Brank|| || || || ||		 ||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|| || || || || ||
Line 63: Line 71:
||Pin Name||Resistance|| Equipment || Assign || comment1 || comment2 ||
||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|| || || || ||
||F||75 ohm|| || || || ||
||G||4 ohm|| || || || ||
||H||4 ohm|| || || || ||
||J||75 ohm|| || || || ||
||K||75 ohm|| || || || ||
||L||4 ohm|| || || || ||
||M||4 ohm|| || || || ||
||N||Brank|| || || || ||
||P||75 ohm|| || || || ||
||R||75 ohm|| || || || ||
||S||4 ohm|| || || || ||
||T||4 ohm|| || || || ||
||U||75 ohm|| || || || ||
||V||75 ohm|| || || || ||
||W||4 ohm|| || || || ||
||X||4 ohm|| || || || ||
||Y||Brank|| || || || ||		 ||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|| || || || || ||
Line 87: Line 95:
{{attachment:burndy_cryostat.png | Diagram|width="300" }}
Line 135: Line 144:

== OpLev ==

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

{{attachment:ETMchamber_WAB_oplev_beams3.PNG| Diagram|width="500"}}

== WAB Alignment ==

 * Alignment done with 2 laser-leveler inside the IYC
 * Regarding the used terms:
 1.1 As the baffle is placed along the Y-arm, +Y and -Y refer to both long ends of the baffle toward the Y-end and toward the center area, respectively!
 1.2 The same holds true for the horizontal dimension in x-arm direction (+X means toward X-end and -X toward center/PSL)

=== Yaw ===

 * laser-leveler needs to be close to the -Y main-beam entrance in a height 300 - 400 mm above the optical table
 * Vertical laser line to be adjusted to the main-beam indication on the optical table and the inner wall of the cryostat
 * Checked the line by using the slids of the flanges on top the WAB (each slid is ~3.5 mm broad)
 * For both slids, the laser line is mismatched (not centered) toward -X by ~0.5 mm (@ +Y slid) and ~1 mm (@ -Y slid)
That means that there is probably also a -X offset!
 * The flanges have a distance of 170 mm which indicates a maximum yaw-tilting of ~0.1 degrees

'''Note:''' taking the distances is very hard as the position of the slids is not easy to access

=== Pitch ===

 * laser-leveler outside the cryostat (but inside IYC) set to give a horizontal line along length side of the baffle
 * Found a slight mismatch for the outer screw holding the OpLev mirrors in +Y,+X and -Y,+X
 * Difference is ~1 mm (+Z @ -Y, so -Y-side is higher than +Y-side)
 * With approx. 500 mm distance between both screws, the maximum pitch is ~0.1 degrees

=== Roll ===

 * Took the height of the OpLev mirror screw-holes (@ -Y,+X and -Y,-X) with a vertical ruler and the horizontal line of the laser-leveler outside the cryostat
 * Measured a difference of 2.5 mm which makes it a roll of 0.55 degrees (radius of baffle ~130 mm); -Y,-X is higher!
 * Then took the height of baffle-wings which are mounted on the flanges and could not measure any difference (within an error of 0.5 mm)
 * Hence, only the baffle is slightly rolled within the flanges!

Wide Angle Baffle Cooling Test 2018

<< <  2018 / 1 >  >>
Mon Tue Wed Thu Fri Sat Sun
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31        

<< <  2018 / 2 >  >>
Mon Tue Wed Thu Fri Sat Sun
      1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28        

<< <  2018 / 3 >  >>
Mon Tue Wed Thu Fri Sat Sun
      1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31  

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

Diagram

WAB Alignment

  • Alignment done with 2 laser-leveler inside the IYC
  • Regarding the used terms: 1.1 As the baffle is placed along the Y-arm, +Y and -Y refer to both long ends of the baffle toward the Y-end and toward the center area, respectively! 1.2 The same holds true for the horizontal dimension in x-arm direction (+X means toward X-end and -X toward center/PSL)

Yaw

  • laser-leveler needs to be close to the -Y main-beam entrance in a height 300 - 400 mm above the optical table
  • Vertical laser line to be adjusted to the main-beam indication on the optical table and the inner wall of the cryostat
  • Checked the line by using the slids of the flanges on top the WAB (each slid is ~3.5 mm broad)
  • For both slids, the laser line is mismatched (not centered) toward -X by ~0.5 mm (@ +Y slid) and ~1 mm (@ -Y slid)

That means that there is probably also a -X offset!

  • The flanges have a distance of 170 mm which indicates a maximum yaw-tilting of ~0.1 degrees

Note: taking the distances is very hard as the position of the slids is not easy to access

Pitch

  • laser-leveler outside the cryostat (but inside IYC) set to give a horizontal line along length side of the baffle

  • Found a slight mismatch for the outer screw holding the OpLev mirrors in +Y,+X and -Y,+X

  • Difference is ~1 mm (+Z @ -Y, so -Y-side is higher than +Y-side)
  • With approx. 500 mm distance between both screws, the maximum pitch is ~0.1 degrees

Roll

  • Took the height of the OpLev mirror screw-holes (@ -Y,+X and -Y,-X) with a vertical ruler and the horizontal line of the laser-leveler outside the cryostat

  • Measured a difference of 2.5 mm which makes it a roll of 0.55 degrees (radius of baffle ~130 mm); -Y,-X is higher!
  • Then took the height of baffle-wings which are mounted on the flanges and could not measure any difference (within an error of 0.5 mm)
  • Hence, only the baffle is slightly rolled within the flanges!

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