Lifting and rotation frame
(through side pads)
010619
INFN Padova - MechaniCAD
Massimo Benettoni
Installation tool
frame &
fixing pads
M. Benettoni - CMS Week 010925
INFN Padova - MechaniCAD
Massimo Benettoni
1st chamber assembly
(M. Benettoni – CMS week 010925)
Goal
understand if we can "survive" with “poor” honeycomb flatness.
Procedure
Measuring of:
s.l.s thickness and top face flatness before gluing;
s.l.s and honeycomb top face flatness after gluing.
Gluing of the chamber (stacking as in sector 4), one gluing per time:
a) s.l. phi
b) Honeycomb panel
c) s.l. theta
d) s.l. phi
Tools
Laser tool for straightness measurement
Table and tool for s.l. relative positioning
Load frame applied during glue curing (about 17 g/cm2)
Results
S.l. thickness
S.l. thickness control (along border) to be improved
Chamber flatness
With the worst honeycomb panel:
in wires phi direction straightness is better than 0.5 mm
phi cells are inside tolerances
~ a half of the theta s.l. is inside flatness tolerance
~ a half of the theta s.l. is outside flatness tolerance
Margin of improvement:
gluing of the top phi s.l. will slightly improve the planarity.
increasing the load charge during gluing (for next chambers)
Conclusion
With:
- panels flatness of the order of 1 mm;
- improved tool/procedure;
good chance to match flatness requirement (0.5 mm) on the full chamber.
Honeycomb flatness after 1st gluing
HC 1 flatness (after 1st gluing)
straightness along wires theta
0
mm/100
-20
line 1
cm
line 2
-40
line 3
line 4
-60
line 5
-80
line 6
-100
line 7
-120
cm
mm/100
HC 1 flatness (after 1st gluing)
straightness along wires phi
5
0
-5
-10
-15
-20
-25
-30
-35
-40
line 1
cm
line 2
line 3
line 4
line 5
line 6
line 7
cm
Massimo B.
Cms Week 010925
Planarity measurement of s.l. phi 1
s.l. phi 1 - top face flatness
straightness perp. to wires
5
0
mm/100
-5
line 1
1
line 2
-10
line 3
-15
line 4
-20
line 5
-25
line 6
-30
line 7
-35
measurement
s.l. phi 1 - top face flatness
straightness parallel to wires
0
mm/100
-5
cm
line 1
line 2
-10
line 3
-15
line 4
line 5
-20
line 6
-25
line 7
-30
measurement
mm/100
s.l. phi 1 - top face straightness
(except borders)
8
6
4
2
0
-2
-4
-6
-8
-10
-12
diag CB
diag DA
line 2 x
line 3 x
1
2
3
4
5
line 4 x
line 5 x
line 2 w
line 3 w
line 4 w
measurement
line 5 w
Massimo B.
Cms Week 010925
Planarity measurement of s.l. theta 1
s.l. theta 1 - top face flatness
straightness along wires direction
10
0
mm/100
-10
line 1
cm
line 2
-20
line 3
-30
line 4
-40
line 5
-50
line 6
-60
line 7
-70
cm
mm/100
s.l. theta 1 flatness
straightness perp. to wires direction
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
line 1
line 2
line 3
cm
line 4
line 5
line 6
line 7
cm
s.l. theta 1- top face straightness
(except borders)
line 2 w
line 3 w
15
line 4 w
10
line 5 w
mm/100
5
line 6 w
0
-5
1
2
3
4
5
line 2 x
line 3 x
-10
line 4 x
-15
line 5 x
-20
line 6 x
measurement
diag CB
diag DA
Massimo B.
Cms Week 010925
Planarity measurement of s.l. theta 1 after 2nd gluing
s.l. theta 1 - top face deformation after gluing
straightness along wires direction
0
line 2
line 3
line 4
line 5
line 6
mm/100
-20
-40
-60
-80
-100
measurement
mm/100
s.l. theta 1 - top face deformation after gluing
straightness perp. to wires direction
10
5
0
-5
-10
-15
-20
-25
measurement
line 1
line 2
line 3
line 4
line 5
line 6
line 7
Massimo B.
Cms Week 010925
thickness mm
S.l.s side thickness (body)
54.0
53.9
53.8
53.7
53.6
53.5
53.4
53.3
53.2
53.1
53.0
theta 1 left
theta 1 right
phi 1 left
phi 1 right
phi 2 left
phi 2 right
phi 3 left
phi 3 right
phi 4 left
phi 4 right
4
5
6
measurement
7