wga – 6th april 2004 blocking the central foot / validation

the

LargeHadronColliderproject

WGA – 6th April 2004

Blocking the central foot / Validation

Progress follow-up

Validation process proposal

Proposal for a first CM geometry stability criteria

WGA workshop – 6th of april 2004 Presentation by Fabien Seyvet - Blocking the central foot/Validation

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Progress follow-up

ITP20 WP01 WP03 Entry Going out

3122 18-03-2004 wk12 note* SMA18CTE-CSA#1(Perez)

16-02-2004see sheet 3122

no 18-03-2004 wk12see sheet 3122

wk13 wk15(comissioning)

3111 19-03-2004 wk12 note* SMA18Bench CNRS(Habib)

26-01-2004See sheet 3111

no 22-03-2004 wk1329-03-2004 wk14 bis

wk15 wk17

1051Cold test geo

meas.

22-03-2004 wk13 note* SMA18CTE-CSA#1(Perez)

15-10-2003See sheet 1051

no 23-03-2004 wk13See sheet 1051

wk13 wk16-17(comissioning)

2063 23-03-2004 wk13 note* SMA18CTE-CSA#2(Thierry)

3-03-2004See sheet 2063

no 24-03-2004 wk13 wk13 wk15Planned

1055 25-03-2004 wk13 SMA18Bench CNRS(Habib)

29-09-2003See sheet 1055

no 26-03-2004 wk13 wk14 wk15-16Planned

3118 29-03-2004 wk14 SMA18CTE-CSA#2 (Thierry)

19-02-2004See sheet 3119

no 30-3-2004 wk14 wk15

3119 29-03-2004 wk14 SMA18CTE-CSA#1(Perez)

20-02-2004See sheet 3119

no 31-3-2004 wk14 wk15 wk17

2019 30-3-2004 wk14 SMA18 bench 3(Habib)

16-10-2003See sheet 2019

no 2-4-2004 wk14Planned

wk15

1073 1-4-2004 wk14 SMA18 bench CNRS(Habib)

19-03-2004See sheet 1073

29-03-2004 wk14 5-4-2004 wk15Planned

3058 1-4-2004 ws14 SMA18CTE-CSA#1(Perez)

19-09-2003See sheet 3058

30-03-2004 wk14 5-4-2004 wk15Planned

3088 5-4-2004 wk15 SMA18 bench 3(Habib)

18-11-2003See sheet 3088

31-3-2004 wk14 6-4-2004 wk15Planned

3117 2-4-2004 wk14Planned

SMA18()

17-02-2004to be integrated

1-4-2004 wk14Planned

7-4-2004 wk15Planned

Date of operation:block ctre supp. post

Date of fiducialisation

Site/bench**

Date of cold tests

WITH FIDU AT WP03

Magnet# (blocked)

VALIDATION PROCESS


3

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Progress follow-up

3033 23-03-2004 wk13 SMA18Bench CNRS(Habib)

13-11-2003See sheet 3033

no no wk13 wk15Planned


17-10-2003See sheet 1058

no no wk13 wk15Planned


21-03-2003see sheet 3018

28-07-2003see sheet 3018

no wk13 wk15Planned


3-03-2004see sheet 2081

no no wk14 wk15-16Planned

1062 29-03-2004 wk14 SMA18 bench CNRS(Habib)

10-12-2003See sheet 1062

no no wk14


no no s15


3065 30-3-2004 wk14 note* SMI21009 30-3-2004 wk14 note* SMi2

3041 10-03-2004 wk11 note* SMA18 bench CNRS(Habib)

Note* Cryostating perfromed using a procedure that could deform CM during assembly

NO FIDU AT WP03

MAGNET ALREADY IN

SMI2

central foot not blocked

central foot not blocked

central foot not blocked ADJUSTED TO ITP20


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Some information obtained

-1,5

-1

-0,5

0

0,5

1

1,5

-500 1500 3500 5500 7500 9500 11500 13500 15500

3065 WP08 ctre foot adjusted V1 Dx

3065 WP08 ctre foot adjusted V2 Dx

3065 ITP20 Dx

3065 ITP20 Dx

3065 wp8 before adjustment Dx

3065 wp8 before adjustment y

Magnet 3065 adjusted to itp20• No deformation of CM curvature during blocking• Transfer function accuracy remains within 15-20% • End cartography reliability


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• WP01 geometric measurement re-implemented because of differences between itp20 and after cryostating (effect of transport and/or cryostating)

-1,5

-1

-0,5

0

0,5

1

1,5

-500 1500 3500 5500 7500 9500 11500 13500 15500

Magnet 3122 WP03 V1 Dx


Magnet 3122 ITP20 Dx



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• During cryostating there has been some deformation imposed on CM

• Procedure was changed (marked note* in follow-up table)– There might be other deformation effect as well


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• Other example (3111), magnet still NC

-1,5

-1

-0,5

0

0,5

1

1,5

2

-500 1500 3500 5500 7500 9500 11500 13500 15500





Magnet 3111 WP03b Dx

Magnet 3111 WP03b Dx

Aimant aux limites des tolérances dans l'industrie, puis hors tolérance après le cryostating Effet faible du soulèvement de l'aimant 3111 dans son cryostat

fidu wp03 - Levage - fidu wp03 bis


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-1,5

-1

-0,5

0

0,5

1

1,5

-500 1500 3500 5500 7500 9500 11500 13500 15500

3058 WP01 V1 Dx

3058 WP01 V2 Dx

3058 ITP20 Dx

3058 ITP20 Dx

•There exists an effect of transport (example on 3058)•It was studied based on previous data (geo. meas. at reception of CM), with the results that reshaped magnets only were affected by transport…


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-1,5

-1

-0,5

0

0,5

1

1,5

-500 1500 3500 5500 7500 9500 11500 13500 15500Magnet 1051 WP03 V1 Dx




Magnet 1051 Warm magnetic meas. Dx

Magnet 1051 Warm magnetic meas. Dx

• An other example of difference between geometry at industry and after cryostating

• Plus warm magnetic measurement of Juan G. at warm -> correlation


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Validation process proposal

CM transport

Cryostating

Cold test SM18

Cryodipole transport-> SMi2

Wp01 geometry meas.

Wp03 fiducialisation

Wp08 fiducialsation.

Wp08b fiducialisation

Plan

Tunnel

For >10 validation magnets3122,3111,1051,2063,1055**,3118,3119,2019,1073,3058,1088,3117,3129, at least

Evaluation of stability•With central foot blocked•Without central foot blocked

Comparison with one or several definite geometry criteria at each step

**One cryodipole with all 3 support posts lubricated

Blocking


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Proposal for a first CM geometry stability criteria

• dS (sagitta error)– Representative of CM

curvature. This is directly related to eliminating CM center lateral DOF

– Calculated by AT-MAS (Elena’s section) providing CM sagitta error when compared with theoretical value (“validated” information)

– Available for each steps• cryodipole assembly• cold tests• Transport

-> Would enable partial evaluation of effect of central foot blockage

j

nijijinj dSdSCase

,1,1,

1

With central foot blocked Without

Central foot blocked

Effect of cold test

No magnet passed cold tests and fiducialisation yet

Sfidu wp3-wp8=0.55mm**

For n=27 magnets

** Courtesy from Elena W.

Effect of cryodipole transport

Sfidu wp8-wp8b=0.16mm**

For n=1 magnet (3041)


Sfidu wp8-wp8b= 0.61mm**

For n=18 magnets


j

nifiduifiduin

NBorBfidu jjjj

dSdSS,1

,,1..

11 AND the shape graphs, of course, as a first approximation…


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Measurement of CM geometry and deformation, during cryogenic

operation

• Measurement from Juan G. on 1051– Correlation of magnetic meas. with fidu geometric meas.

obtained at room temperature– Method is still in validation period for cold meas. It seems

not applicable for the validation process yet…

• Measurement of cryostat fiducials during cool down– Missed on 1051 (planned for Monday and executed

during WE without measurement running)– Next magnet should be identified…

wga – 6th april 2004 blocking the central foot / validation

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