1. Update on the DB Girders FE Analyses
21 March 2011
Nick Gazis, CERN-BE/RF & NTU-Athens

2. Girder max Deformation
DB Quad Weight Approximations
Weight
Safety Factor
Girder max Deformation
(Boostec - SiC)
DB-quad Weight Estimation (Summer 2009) for girder design
112 kg per DB-quad
2.6
≤ 10μm
Confirmation for DB-quad mock-up weight
(Feb 2011)
80 kg per DB-quad
3 .6
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
21 March 2011
Nick Gazis, CERN-BE/RF & NTU-Athens

3. FE Analysis: Boostec Girder
Boostec girder Deformation ≤ 17 μm
Boostec girder eigenfrequency: 37.7 Hz
21 March 2011
Nick Gazis, CERN-BE/RF & NTU-Athens

4. FE Analysis: Epucret Girder
Epucret girder Deformation ≤ 18.7 μm
Epucret girder eigenfrequency: 61.5 Hz
21 March 2011
Nick Gazis, CERN-BE/RF & NTU-Athens

5. Concern - Possible Future Task: Comments are always welcome!
Summary & Future Steps A B C
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.
Comments are always welcome!
21 March 2011
Nick Gazis, CERN-BE/RF & NTU-Athens

6. Thank you! 21 March 2011 Nick Gazis, CERN-BE/RF & NTU-Athens6

7. Supplementary Slide Weight Estimation of the CLIC-Module [Type 0]
MAIN BEAM
Material
Density (kg/m3)
Weight / Unit (kg)
Quantity
Total Weight (kg)
ΜΒ-magnet Support 1
Cradles
6,5 2 13
Integral "V" Support
StSt
8080 15 5 75
Vacuum Manifold (welding, bolts & nuts included) 50
Pumps 20
Vacuum Reservoir
Accelarating Structure (Φ=140) Cu
8940 70 4
280
Loads
Waveguides from CMF to ACS
Splitter
Cooling Blocks
265
Girder Weight
SiC
3128* 56
230
Total
976
Supplementary Slide
Type 0
DRIVE BEAM
Material
Density (kg/m3)
Weight / Unit (kg)
Quantity
Total Weight (kg)
DB Magnets
112 2
224
Cradles
6,5 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) 50
Pumps 20 1
Vacuum Reservoir 15
PETS (with on-off mechanisms and couplers) Cu
8940 22 4 88
Mini-Tank 3 12
DB Drift Tube
RF Distribution [Waveguides + Flanges (WR90 + Hammer Type)]
11/AS 44
Cooling Blocks
Girder Weight
SiC
3128* 56
233
Total
802
EDMS
Total Weight of Type-0 [MB+DB] (kg)
1778
* An average SiC density value is taken for estimation. It might change depending on particular material properties.
21 March 2011
Nick Gazis, CERN-BE/RF & NTU-Athens

8. Supplementary Slide CLIC-Module MB & DB Baseline Girder Handling Zones
Technical Specification:
EDMS
Supplementary Slide
CLIC Type 0 Supporting System (space reservation)
Girder Baseline Configuration (Nov 2009):
Max. Vertical & Lateral Deformation at 10μm
Max. Girder Weight at 240kg
Max. Girder Length of 2m
Max. Load on top of the Girder 400kg/m (distributed weight)
Rectangular Space Reservation of External Dimensions of [320*150]mm
References Surfaces (as presented in color surfaces with possibility of tolerancing ≤ 20 μm)
Baseline Configuration with Reference Surfaces
DB-quad: Non-concentrated weight of comparable order of magnitude
350 mm
150 mm
150 mm
350 mm
Handling Zones
21 March 2011
Nick Gazis, CERN-BE/RF & NTU-Athens