R Cubizolles 2 Presentation Estimation of the misalignment Conclusion Summary 3 PRESENTATION LB650 Cryomodule Preliminary design review PRESENTATION 4 Alignment of the cavity A positioning of the cavity train is done in clean room ID: 915651
Download Presentation The PPT/PDF document "Alignment and cavity post" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Alignment and cavity post
R. Cubizolles
Slide22
Presentation
Estimation of the misalignment
Conclusion
Summary
Slide33
PRESENTATION
LB650 Cryomodule – Preliminary design review
Slide4PRESENTATION
4
Alignment of the cavity
A positioning of the cavity train is done in clean room.
Then after assembly of the cavity train on the strongback, targets are positioned on the cavity train for alignment. They are positioned on
the upstream and downstream flanges of the cavities. As XFEL cavities, specific cones are used for the location of the targets.
A laser
tracker
is used to monitor the position of the cavity axis and C-shaped elements are used to adjust the position of the cavities in regards to a theoretical beam axis.
Beam axis
Cavity train after positioning on clean room
Slide5PRESENTATION
5
Alignment of the cavity
A positioning of the cavity train is done in clean room.
Then after assembly of the cavity train on the strongback, targets are positioned on the cavity train for alignment. They are positioned on
the upstream and downstream flanges of the cavities. As XFEL cavities, specific cones are used for the location of the targets.
A laser
tracker
is used to monitor the position of the cavity axis and C-shaped elements are used to adjust the position of the cavities in regards to a theoretical beam axis.
Beam axis
Cavity train after assembly on the strongback
Slide6PRESENTATION
6
Alignment of the cavity
A positioning of the cavity train is done in clean room.
Then after assembly of the cavity train on the strongback, targets are positioned on the cavity train for alignment. They are positioned on
the upstream and downstream flanges of the cavities. As XFEL cavities, specific cones are used for the location of the targets.
A laser
tracker
is used to monitor the position of the cavity axis and C-shaped elements are used to adjust the position of the cavities in regards to a theoretical beam axis.
LB650 Cavity flange
Cones
Slide7PRESENTATION
7
Alignment of the cavity
A positioning of the cavity train is done in clean room.
Then after assembly of the cavity train on the strongback, targets are positioned on the cavity train for alignment. They are positioned on
the upstream and downstream flanges of the cavities. As XFEL cavities, specific cones are used for the location of the targets.
A laser
tracker
is used to monitor the position of the cavity axis and C-shaped elements are used to adjust the position of the cavities in regards to a theoretical beam axis.
Cavity Posts
C-Shaped elements
Coupler side
Slide8PRESENTATION
8
Alignment of the cavity
A positioning of the cavity train is done in clean room.
Then after assembly of the cavity train on the strongback, targets are positioned on the cavity train for alignment. They are positioned on
the upstream and downstream flanges of the cavities. As XFEL cavities, specific cones are used for the location of the targets.
A laser
tracker
is used to monitor the position of the cavity axis and C-shaped elements are used to adjust the position of the cavities in regards to a theoretical beam axis.
C-Shaped elements
Belleville
washers
Reference
screws
Cavity Posts
Coupler side
Slide9PRESENTATION
9
HBCAM
HBCAM are optical instrument to monitor geometry.
Targets are made of ceramic and glass ball in opened tubes.
HBCAM can only give the transverse and angular displacement of the cavities
HBCAM acquisition picture
Viewport
Target frame
Glass balls x2
Target tube
H-BCAM picture
All pictures from HBCAM_PIP-II_HB650_CM_FDR | Silvia
Zorzetti
Slide10PRESENTATION
10
HBCAM
On the upstream and downstream end cap HBCAM
and end cap flanges are
placed
to
monitor the alignment of the cavities during the cooling down. Four targets for the each cavity are placed for the HBCAM monitoring
.
The HBCAM
are used for m
onitoring during cooling down
The HBCAM can also be placed during the assembly after alignment of the cavities with laser tracker.
From HBCAM_PIP-II_HB650_CM_FDR | Silvia
Zorzetti
LB650 cryomodule view from viewports
Slide11PRESENTATION
11
HBCAM
On the upstream and downstream end cap HBCAM are placed in order to monitor the alignment of the cavities during the cooling down. Four targets for the each cavity are placed for the HBCAM monitoring
.
The HBCAM
are used for m
onitoring during cooling down
The HBCAM can also be placed during the assembly after alignment of the cavities with laser tracker.
Supports for targets
From HBCAM_PIP-II_HB650_CM_FDR | Silvia
Zorzetti
Glass balls x2
Ceramic balls x4
Example of target
Slide12PRESENTATION
12
Requirement
PIP-II
LB650 Cryomodule
|Technical
Requirements Specification
Document
number: ED0009658, Rev. A
Slide1313
ESTIMATION OF THE MISALIGNMENT
LB650 Cryomodule – Preliminary design review
Slide14ESTIMENTATION OF THE MISALIGNMENT
14
Simulations for the cavity alignment
The vacuum vessel deformations implied a displacement of the strongback and thus a cavity displacement along the beam axis.
The model consist of :
The vacuum vessel
The strongback with its studs
Cavity post and G11 posts
Vacuum vessel : 304L and P355gh
Studs : 316L and Bronze
Strongback : 316L
Cavity post and C shaped elements : Titanium Grade 2
G11 posts : 316L, Al 6061-T6, G11
Slide15ESTIMENTATION OF THE MISALIGNMENT
15
Simulations for the cavity alignment
The vacuum vessel deformations implied a displacement of the strongback and thus a cavity displacement along the beam axis.
The model consist of :
The vacuum vessel
The strongback with its studs
Cavity post and G11 posts
Slide16ESTIMENTATION OF THE MISALIGNMENT
16
Simulations for the cavity alignment
The vacuum vessel deformations implied a displacement of the strongback and thus a cavity displacement along the beam axis.
The model consist of :
The vacuum vessel
The strongback with its studs
Cavity post and G11 posts
Slide17ESTIMENTATION OF THE MISALIGNMENT
17
Simulations for the cavity alignment
The vacuum vessel deformations implied a displacement of the strongback and thus a cavity displacement along the beam axis.
The model consist of :
The vacuum vessel
The strongback with its studs
Cavity post and G11 posts
Slide18ESTIMENTATION OF THE MISALIGNMENT
18
Simulations for the cavity alignment
The interface with the ground is
fixed
A pressure of 1.0 bar is applied in the external surfaces of the vacuum vessel.
A vertical force of 5000 N (-Z axis) representing the cold mass weight (thermal shield, magnetic shield, …) is applied to the top parts of the strongback.
Mass point representing
half
of the full equipped cavity (105 kg) are attached to the C-shaped elements.
An acceleration of 9.81 m.s
-2
on the vertical axis is applied
Mass point of 105kg
Fixed
Slide19ESTIMENTATION OF THE MISALIGNMENT
19
Simulations for the cavity alignment
Cryomodule deformations under external pressure.
Slide20ESTIMENTATION OF THE MISALIGNMENT
20
Simulations for the cavity alignment
Strongback deformations under external pressure.
Slide21ESTIMENTATION OF THE MISALIGNMENT
21
Simulations for the cavity alignment
Strongback with cavity posts deformations under external pressure.
Slide22ESTIMENTATION OF THE MISALIGNMENT
22
Smallest circle minimizing the distance of the points to its center
Radius = 0.15 mm
Y position = -0.13mm
Z position = 0.06 mm
Simulations for the cavity alignment
Position of the upstream and down stream cavity flanges.
The positions take only into account the pressure effects on the vacuum vessel.
Beam axis
1
2
3
4
5
6
7
8
Slide23ESTIMENTATION OF THE MISALIGNMENT
23
Smallest circle minimizing the distance of the points to its center
Radius = 0.15 mm
Y position = -0.13mm
Z position = 0.06 mm
0.3mm
If no offset is taken into account.
Simulations for the cavity alignment
Position of the upstream and down stream cavity flanges.
The positions take only into account the pressure effects on the vacuum vessel.
Beam axis
1
2
3
4
5
6
7
8
No offset for the thermal shrinking is taken into account in this simulations.
Slide2424
CONCLUSION
LB650 Cryomodule – Preliminary design review
Slide25CONCLUSION
25
XXXX
.
Slide26Merci de votre attention