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Photogrammetry of TT7

Photogrammetry of TT7. Front view Distribution of all targets. All the plots are in the magnet reference system. Magnet. Top view Distribution of all targets. TT7, zoom in next page. Yellow plate. Endcaps holes. Endcaps Surface.

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Photogrammetry of TT7

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  1. Photogrammetry of TT7

  2. Front view Distribution of all targets All the plots are in the magnet reference system

  3. Magnet Top view Distribution of all targets TT7, zoom in next page

  4. Yellow plate Endcaps holes Endcaps Surface Planarity of yellow plate and top endcaps improved with respect to TT10 Endcaps holes 2 mm Yellow plate 2.6 mm Endcaps Surface

  5. Top EC Bottom EC Yellow plate R EC L EC Top view ZOOM VSB HSB

  6. General side view Bottom EC Top EC Rigth EC Yellow plate Left EC VSB HSB

  7. Top EC Endcaps and Croisillions Top View Bottom EC R EC L EC Croisillions

  8. Endcaps and Croisillions Side View Bottom EC Top EC Rigth EC Left EC 10 mm Croisillions

  9. Definition of the horizontal slices, front view Top 1 The points just at the borders of the horizontal end-caps (green boxes) have been included and corrected by 3 mm along the beam coordinate to take into account the thickness of the end-cap 2 3 4 5 6 Y 7 8 9 10 11 12 Bottom Rigth X Left

  10. Top view of the slices Front view of the slices Top Magnet Slice 1 (very top) Bottom Borexino This line is just put to guide the eyes Y vs X Z vs X 2 Y vs X Z vs X 3 Y vs X Punching effect of the croisillions Z vs X 4 Z vs X Y vs X

  11. 5 Y vs X Z vs X 6 Y vs X Z vs X 7 Z vs X Y vs X 8 Y vs X Z vs X

  12. 9 Y vs X Z vs X 10 Y vs X Z vs X 11 Y vs X Z vs X Slice 12 Very bottom Z vs X Y vs X

  13. Typical deformation of one horizontal module Magnet Top Bending along the long side Rigth Left Bending along the short side Bottom Borexino Point of maximal deformation at the center, where there is the max of the bending both along the short and the long side. These points are corresponding to the red bands in the table of the previous slides Y Z NB: the axis system is left handed, this comes from the fact that is just a redefinition of the one from the photogrammetry which is rigth-handed but with different axis naming X(photo) -> X Y(photo) -> Z Z(photo) -> Y X

  14. -975 -980 -985 -990 -995 Surface representation of the measured points, system corrected for the non verticality of the magnet Max spread in the beam Coordinate of the measured points, 20.4 mm

  15. Top 1 2 3 Rock Rock Gallery Gallery Top Bottom Bottom 1 3 2 Rock Gallery Top Bottom Bottom Top Gallery Rock

  16. Top TT7 3 Rock Gallery 3 Rock Gallery Bottom Top Bottom Top TT10 Top Bottom TT7 has non planarity effects different than TT10 Bottom

  17. Wall volume

  18. Conclusions on TT7: 1) Yellow plate flatness and alignment of top EC improved with respect to TT10 2) Non planarity effects at the level (or slightly worse than TT10) with a different shape

  19. Top Definition of the « rails » reference system for the TDA5005 Y Magnet Z X Rock Gallery Bottom Borexino

  20. Wires NO Wires The yellow plate with the wires had a sagitta of about 12 mm. By removing the wires this sagitta increased by 3 mm and the gallery side of the yellow plate moved by 4 mm towards Borexino The points measured on the turnbuckles practically did not move Turnbuckles Turnbuckles Rock Gallery Yellow plate Yellow plate +4 mm Yellow plate Yellow plate Nominal position Of the yellow plate surface in the Target z=3891.8 +3 mm Turnbuckles Turnbuckles

  21. Wires Wires Z of all the points with the wires tensioned Turnbuckles Turnbuckles Difference in Z wires/NO wires Dz Dz Turnbuckles Turnbuckles (very small movements) Rock Gallery Movement of the Yellow plate and tilt at the center

  22. Wires NO Wires ENDCAPS 3 points (at the middle, left and right were adjusted on the bottom endcaps in order to have the same Z as the top endcaps. The adjustment for the point at the gallery side was lost by accident (link not tigthened enough) due to an internal tension, this worsened after releasing the wires The top EC had a sagitta of 6 mm which became 9 mm after releasing the wires Rock Gallery Rock Gallery +3 mm Gallery Rock Gallery Rock

  23. Wires NO Wires The horizontal modules endcaps have as usual a sagitta oriented in the direction of the magnet, when the tension of the wires is released the sagitta is sligthly reduced for the endcaps of the gallery side (the side where the top and bottom were not aligned) while they moved by 5 mm at the bottom and 2 mm at the top in the direction of Borexino Rock Gallery Rock Gallery +4.5 mm +2 mm Top Top Bottom Bottom

  24. Rock Z of all the points with the wires tensioned Bottom Top Gallery Top Bottom Gallery Rock Difference in Z wires/NO wires Rock Bottom +2 mm Top Gallery +5 mm Top Bottom

  25. Wires NO Wires Gallery Rock Gallery Rock The points on the surface had an increase in sagitta up to 5-6 mm The non planarity of the plane is around 15 mm Gallery Rock Gallery Rock

  26. Z vs X of all the points with the wires tensioned Gallery Rock Gallery Rock Difference in Z vs X wires/NO wires The maximal increase of sagitta takes place at the middle of the detector the minimum at the rock side Gallery Rock

  27. Wires NO Wires Gallery Rock Gallery Rock Seen from the side the points on the surface have a sagitta in the direction of the magnet Top Top Bottom Bottom

  28. Wires Wires Z vs Y of all the points with the wires tensioned Top Bottom Difference in Z vs X and Y wires/NO wires Gallery Rock The maximal increase of sagitta takes place in correspondence to the second horizontal module from the top Top Gallery Rock Bottom

  29. Turnbukles 3D ANALYSIS OF THE DIFFERENCES WIRES/NO WIRES Top The points in the red regions by removing the wires moved in the direction of Borexino by 5-6 mm, the points in the blue regions practically did not move Yellow plate Gallery Rock Difference in Z wires/nowires Endcaps Bottom

  30. Top Magnet Top Gallery Rock Rock Gallery -6 mm Borexino The points in the red regions by removing the wires moved in the direction of Borexino up to 6 mm Bottom Magnet Magnet Top Rock Top Bottom Rock Gallery Bottom Gallery Borexino Borexino

  31. Wires at 0 tension, Base clamped for verticality Pillars Bottom EC after alignment and clamping Yellow plate surface Top EC Side EC Side EC 10 mm Points on the surface Rock Gallery

  32. Wires at 0 tension, Base clamped for verticality Side view Pillars top Pillars (bottom) Bottom EC TOP EC Lateral EC Yellow plate Surface points (12 per module) Bottom TOP

  33. Effect of tensioning the wires at 40 Kg (shown on one slice) EC EC Effect of going from 0 tension to 40 Kg Turnbuckle reg. Clamps released

  34. Conclusions TT12 wires/nowires • A little effect is seen on the yellow plate deformation due to the wires (already with the wires tensioned the sagitta was 12 mm and it increased by 3 mm by releasing the wires) • We aligned the top and bottom endcaps in 3 points at the same Z but the point at the rigth moved by 8 mm due to some internal forces of the plane which likes to go in a skew position. This effect further increased when releasing the wires • On the surface points the effect of removing the wires increased the bump by about 6 mm on the contrary of what we observed on the mounting arch !

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