td18 – post mortem analysis 1 1093766 inspection 11wdsdvg1kek slac
TRANSCRIPT
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TD18 – post mortem analysis
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1093766
Inspection 11WDSDVG1KEK SLAC
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TD18 - analysis
• RF check made at CERN (confirmation of previous results from SLAC, EDMS: 1090704 )
• Straightness measurement• Cutting: see next slides• Visual inspection (EDMS:1093766)• SEM (localization of breakdowns)• Dimensional control (EDMS: 1099135)
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For the straightness measurement we have cut 2 couplers
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The engraved lign is not to be lost in the orientation of the discs after the cuts
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G. Riddone, 20100816 14
Preparation for the measurement of straightness for the cells after bonding and of the couplers after brazing
Mesures 1
Mesures 2
Alignment of cells 0 and 20 is 0 in the vertical and horizontal axis
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DISQUES MICRONS
COUPLEUR 0D.0 0D.1 0D.2 -9D.3 -5D.4 3D.5 3D.6 4D.7 -19D.8 -18D.9 -16
D.10 -17D.11 -14D.12 -8D.13 -5D.14 -3D.15 3D.16 2D.17 -15D.18 -12D.19 -9D.20 0
COUPLEUR 10
COUPLEUR D.1 D.3 D.5 D.7 D.9
D.11D.13
D.15D.17
D.19
COUPLEUR
-25
-20
-15
-10
-5
0
5
10
15
mesures1
Results after 4 passes with a micron comparator
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DISQUES MICRONS
COUPLEUR 2D.0 0D.1 -1D.2 -4D.3 2D.4 6D.5 1D.6 -6D.7 -15D.8 0D.9 -10
D.10 -3D.11 -13D.12 -13D.13 -6D.14 -9D.15 -7D.16 -10D.17 0D.18 -2D.19 -10D.20 0
COUPLEUR 12
COUPLEUR D.1 D.3 D.5 D.7 D.9
D.11D.13
D.15D.17
D.19
COUPLEUR
-20
-15
-10
-5
0
5
10
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Mesures 2
Results after 4 passes with a micron comparator at 90 degrees of the first measurement
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COUPLEUR D.1 D.3 D.5 D.7 D.9
D.11D.13
D.15D.17
D.19
COUPLEUR
-25
-20
-15
-10
-5
0
5
10
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Mesure 1
Mesures 2
Mesures1: 23 microns for the disc bonding from 0 to 20 30 microns with the coupler brazing
Mesures 2 : 21 microns for the disc bonding from 0 to 20 28 microns with the coupler brazing
Superposition of the values of two measurements
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Cutting sections for analyses
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5 cuts: Iris shall be not damaged 16,17,18,19 and 20STEP 1
Cut 5 Cut 1
Part
A
Part
B
Part
C
Part
D
Part
Ethe irises should not be damaged
Les disques seront gravés A,B,C,D et E
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G. Riddone, 20100816 20
STEP 2.1
Cut 6Coupe disque 10
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STEP 2.2
Cut 7
Part F
Part G
Longitudinal section of the discs 11 to 15
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Dimensional control disk N 18 (EDMS: 1099135)
Diameter of the iris is 5.4024 mm before BONDING
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Dimensional control (EDMS: 1099135)
Diameter after BONDING is 5.403 mm difference is 0.6 microns
Diameter of the iris is 5.4024 mm before BONDING
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SEM (localization of breakdowns) by
Markus