Nick Gazis, CERN-BE/RF & NTU-Athens 1

Update on the DB Girders FE Analyses

04 April 2011

204 April 2011

Weight Safety Factor Girder max Deformation(Boostec - SiC)

DB-quad Weight Estimation (Summer 2009)

for girder design112 kg per DB-quad 2.6 ≤ 10μm

Confirmation for DB-quad mock-up weight

(Feb 2011)80 kg per DB-quad 3 .6 ≤ 10μm

Correction on the DB-quad mock-up weight (15 Mar 2011)

170 kg per DB-quad 1.5 ~19 μm

Risen Concern: DB-quad being housed on top of the brazed girder area containing high density of SiN and average quantity of SiC

The existing value for the weight of the DB-quad mock-up is only 5% bigger than the expected weight of the real DB-quad

DB Quad Weight Approximations

Nick Gazis, CERN-BE/RF & NTU-Athens

Nick Gazis, CERN-BE/RF & NTU-Athens 304 April 2011

Boostec girder Deformation ≤ 17 μm

Boostec girder eigenfrequency: 37.7 Hz

FE Analysis: Boostec Girder

Nick Gazis, CERN-BE/RF & NTU-Athens 404 April 2011

Epucret girder eigenfrequency: 61.5 Hz

FE Analysis: Epucret Girder

Epucret girder Deformation ≤ 18.7 μm

Nick Gazis, CERN-BE/RF & NTU-Athens 5

Summary & Future Steps

04 April 2011

Comments are always welcome!

Concern - Possible Future Task:•Epucret top reference surfaces could be affected by the increased weight? •A rupture investigation for fine ceramics (like SiC, Epument) would need thorough time-consuming simulation with fatigue time and dedicated fracture mechanics background for a specific material.

A

B

C

Future Tasks:•Update of the CLIC module weight estimation (EDMS doc 1009300)

Nick Gazis, CERN-BE/RF & NTU-Athens 66Nick Gazis, CERN-BE/RF & NTU-Athens04 April 2011

Thank you!

Nick Gazis, CERN-BE/RF & NTU-Athens 704 April 2011

Weight Estimation of the CLIC-Module [Type 0]

Type 0

MAIN BEAM Material Density (kg/m3) Weight / Unit (kg) Quantity Total Weight (kg)

ΜΒ-magnet Support     1 0Cradles     6,5 2 13

Integral "V" Support StSt 8080 15 5 75Vacuum Manifold (welding, bolts & nuts included) StSt 8080     50

Pumps   20 1 20Vacuum Reservoir StSt 8080 15 1 15

Accelarating Structure (Φ=140) Cu 8940 70 4 280Loads StSt 8080 5 4 20

Waveguides from CMF to ACS Cu 8940 1 4 4Splitter Cu 8940 1 4 4

Cooling Blocks Cu 8940     265Girder Weight SiC 3128* 56 1 230

Total 976

Type 0

DRIVE BEAM Material Density (kg/m3) Weight / Unit (kg) Quantity Total Weight (kg)

DB Magnets     112 2 224Cradles     6,5 2 13

Integral "V" Support (different for the PETS & DB Drift Tube) StSt 8080 13/15 0 and 6 90

Vacuum Manifold (welding, bolts & nuts included) StSt 8080     50Pumps   20 1 20

Vacuum Reservoir StSt 8080 15 1 15PETS (with on-off mechanisms and couplers) Cu 8940 22 4 88

Mini-Tank Cu 8940 3 4 12DB Drift Tube StSt 8080 0

RF Distribution [Waveguides + Flanges (WR90 + Hammer Type)] Cu 8940 11/AS 4 44Cooling Blocks Cu 8940     13Girder Weight SiC 3128* 56 1 233

Total 802

* An average SiC density value is taken for estimation. It might change depending on particular material properties.

Total Weight of Type-0 [MB+DB] (kg) 1778

Supplementary Slide

EDMS 1009300

Nick Gazis, CERN-BE/RF & NTU-Athens 8

150 mm 150 mm350 mm 350 mm

Handling Zones

CLIC-Module MB & DB Baseline Girder

Girder Baseline Configuration (Nov 2009): i. Max. Vertical & Lateral Deformation at 10μmii. Max. Girder Weight at 240kgiii. Max. Girder Length of 2miv. Max. Load on top of the Girder 400kg/m (distributed weight)v. Rectangular Space Reservation of External Dimensions of [320*150]mmvi. References Surfaces (as presented in color surfaces with possibility of tolerancing ≤ 20

μm)

Baseline Configuration with Reference Surfaces

CLIC Type 0 Supporting System (space reservation)

04 April 2011

Technical Specification:

EDMS 1061067

Supplementary Slide

DB-quad: Non-concentrated weight of comparable order

of magnitude