Spine team meeting 23/01/2001H.-G. Moser MPI, Munich Agenda/Topics 1) IHEP pre-series 2) Bias...

spine team meeting 23/01/2001

H.-G. Moser MPI, Munich

Agenda/Topics

1) IHEP pre-series2) Bias Contact3) Straight Split.4) Design variations and improvements5) QA6) Production plans: thermal dummies, module-0, alternatives

7) Mailing lists, WWW page8) AOB



Production Status

Type Produced and shipped by IHEP At MPI

Bias contact added

In work

Outer 31 31 11 18

Middle 15 15 6 7

Inner 15 15 9 5

In work: shipped early December, now at MPI One destroyed trying to make a straight split4 damaged when bias contact added



Thickness SurveyThickness

0

2

4

6

8

10

12

0,450

0,455

0,460

0,465

0,470

0,475

0,480

0,485

0,490

0,495

0,500

0,505

0,510

0,515

0,520

0,525

0,530

0,535

0,540

0,545

0,550

0,555

0,560

0,565

0,570

0,575

0,580

0,585

0,590

0,595

0,600

mm

entr

ies/

0,00

5 m

m

Series2



Design VariationsTitle:spines.epsCreator:fig2dev Version 3.2 Patchlevel 0-beta2Preview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.

1 baseline2 IHEP proposal3 simple butt joint4 Geneva I (step)5 Geneva II (cutt out)6 Geneva II (mod)



Tests of AlN/TPG joints Type load to break1) Simple butt joint 30 g2) Stepped joint 28 g3) Inserted butt joint 66 g4) Baseline profile ---- (TPG disrupted before..)

1

2

4

3



FEA ResultsTitle:/home/afmp08/moser/win/aln_vary.epsCreator:HIGZ Version 1.25/05Preview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.

Option T at Q0=240 W/m2 (K)

Runaway (W/m²)

1) All AlN - 380

2) Lower wing Al2O3

0 380

3) Centre wing Al2O3

0 380

4) Upper wing Al2O3

0.5 380

5) All Al2O3 1.0 330

Lower wing = scnd cooling contactUpper wing = main cooling contact



Evaluation Design 1)

Baseline2) IHEP 3) Butt

joints4)

Gnva I5)

Gnva II6) 5, mod

Costs(+:cheaper) -- + +(+) + + +

Fragility of wings + + -- -- 0(+) 0(+)

TPG machining 0 0 0 -- 0 0

AlN machining -- 0 + 0 0(+) 0(+)

AlN replacement -- + + + + +

Fragility of TPG 0 0 + + +

Stability contact + 0 --(0) --(0) --(0) 0

Thermal properties

0 0 + + + 0

Preliminary

+



Material VariationsThere are probably good reasons to keep AlN for the cooling contacts. In all designs except 1) these are small plates of uniform thickness, not so expensive For the wings more variations are possible: AlN of lower conductivity (120 W/mK, 160 W/mK): This variation is cheaper and easier to machine. Has a fairly high thermal conductivity and good CTE match.Al2O3: raw material is cheaper than AlN. Machining is not much different from AlN, worse

CTE mismatch and rather low thermal conductivity.Quartz/glasses: Probably like Al2O3, low thermal conductivity (Borofloat !)

FR4, glass fibre reinforced peek or similar materials: These materials are probably very cheap and easy to machine. The thermal conductivity is bad, CTE mismatch rather large.CFK (carbon fibre) Remark: I would avoid electrically conductive material….



Costsitem outer middle inner total

number 30 15 15 60

TPG 20 $ 19.7 $ 25.1 $ 1272 $

polish 14.1 $ 13.9 $ 17.8 $ 899 $

profile 1.4 $ 1.4 $ 0.9 $ 77 $

cutting 2.1 $ 2.1 $ 1.6 $ 199 $

coating 2.8 $ 2.8 $ 2.8 $ 168 $

AlN set 66 $ 65 $ 48 $ 3675 $

Net price 106 $ 105 $ 96 $ 6210 $

Packing, testing, transport, tax 27$ 27$ 27$ 1616 $

Total 133 $ 134 $ 123 $ 7826 $

setup 24 $ 24 $ 24 $ 1440 $

Incl. Setup 157 $ 156 $ 147 $ 9266 $



AlN Set costsBaseline IHEPIHEP 2/3 Geneva I Geneva I Geneva I Geneva II G II mod G II mod G II mod Geneva II

width 12 mm 23mm 23mm 23 mm 23mm 23mm 23mm 23mm 23mm 23mmall AlN

all AlN

Al2O

3 and CF

C

for wings

AlN

and CF

C for

wings

AlN

, CF

C,

borofloat for upper

AlN

, CF

C,

borofloat for upper

AlN

,borofloat for w

ings

all AlN

, no profiling

all AlN

with

profiling of upper and low

er wings

(steps)

all AlN

with

profiling of upper and low

er wings

(steps)

main cooling contact piece 0,80 1,73 1,73 1,73 1,73 3,61 3,61 3,612nd cooling contact piece 1,16 2,90 2,90 2,90 2,90 2,26 2,26 2,26lower wings (2nd cooling contact) 4,31 4,31 4,31 4,31 6,07 4,41 5,86 5,86middle wings 4,31 4,31 4,31 4,31 3,82 5,04 5,04 5,04upper wings (main cooling contact) 4,31 4,31 6,07 3,82 6,07 4,12 5,57 4,12Set price (net) 55,00 41,67 14,11 15,84 17,59 15,34 18,86 19,45 22,34 20,89& taxes etc 66,00 50,00

All prices in US$ assumes small size of ceramic piece, may go up (x2)

conversion CHF->US$ not recommended (for thermal or mechanical reasons)

0,616209conversion DM->US$

0,481573Including taxes and transport: 25 US$/set



AlN Profiling CostsType number setup set Total/piece

outer 1171 2790 Euro 10.2 Euro 12.6 Euro

Middle 12 701 2790 Euro 10.2 Euro 14.2 Euro

Middle 6 100 7.0 Euro 7.0 Euro

inner 499 1860 Euro 7.0 Euro 10.7 Euro

Firm quote from Fraunhofer Institut für Industriekeramik, Dresden



AlN Laser Cutting

Type Price/DM

outer 10.2

Middle 12 10.2

Middle 6 7.3

inner 7.3

Quote from All Lasetechnik, München (for > 2000 pieces)



AlN Price

Sheet 10 pieces 20 pieces

114 x 114 x 0.225 mm3

155 DM 125 DM

114 x 114 x 0.5 mm3

120 DM 90 DM

Assuming 2.5 sets/sheet (conservative for outer): 16 US$/set



CTE mismatchTitle:/mnt/home/afmp08/moser/paw/cte.epsCreator:HIGZ Version 1.25/05Preview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.

Best match to Si:

-AlN -Borofloat



Distribution (?)

Institute outer middle inner

UK 8 3 4

Valencia 4 4

MPI 8

Freiburg 6

NIKHEF 5

Geneva 6

Melbourne 5

sum 23 (7 left) 15 15



MoU ContributionsInstitute share kSF

Australia 5% 54

NIKHEF 5% 54

Geneva 25% 268

Germany 34% 364

Spain 9% 96

UK 27% 289

1070



IHEP/NIITAP



GenevaTitle:From AutoCAD Drawing "C:\Mes documents\DPNC\ATLAS\Dessins\159041A3.dwg"Creator:AutoCADPreview:This EPS picture was not savedwith a preview included in it.Comment:This EPS picture will print to aPostScript printer, but not toother types of printers.

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Spine team meeting 23/01/2001H.-G. Moser MPI, Munich Agenda/Topics 1) IHEP pre-series 2) Bias...

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