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Status report on MicroMegas mechanics CERN PH/DT 12/05/13 Jordan Degrange / Francisco Perez Gomez CERN PH/DT

Status report on MicroMegas mechanics

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Status report on MicroMegas mechanics. CERN PH/DT. Content. Concept remind Vacuum table manufacturing and measurements MM panels design Future plans. Concept (1/2). A sandwich of two soft skin is glued without mechanical constraints. A sandwich is: One glass fibre skin (0.5mm) - PowerPoint PPT Presentation

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Page 1: Status report on  MicroMegas  mechanics

Status report on MicroMegas

mechanics

CERN PH/DT

12/05/13Jordan Degrange / Francisco Perez Gomez CERN PH/DT

Page 2: Status report on  MicroMegas  mechanics

Concept remind Vacuum table manufacturing and

measurements MM panels design Future plans

12/05/13Jordan Degrange / Francisco Perez Gomez CERN PH/DT

Content

Page 3: Status report on  MicroMegas  mechanics

A sandwich of two soft skin is glued without mechanical constraints.

A sandwich is:o One glass fibre skin (0.5mm)o Aluminium honeycomb surrounded with an aluminium frameo Second glass fibre skin (0.5mm)

Sandwich schematic view

Jordan Degrange/Francisco Perez Gomez PH/DT

Concept (1/2)

Page 4: Status report on  MicroMegas  mechanics

Manufacturing concepto The skins are sucked with two vacuum tableso The vacuum table surfaces are perfectly flato The vacuum table surfaces are set in parallel position

Jordan Degrange / Francisco Perez Gomez PH/DT

Concept (2/2)

Page 5: Status report on  MicroMegas  mechanics

Dimensions: 1300X600 Manufactured at CERN Outer surface: Epoxy gel

coat ‘’EP Gel coat Weiβ’’ (1+1 reinforced layer).

Structural layer: Glass fibre “Glasgewebe 92150 FK-144 345g/m2 Leinwand’’ + AXSON Epolam 5015 (5 layers).

4 perforated sides aluminium honeycomb.

Araldite 2011

Vacuum table components

Page 6: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Vacuum table exploded view

Gel coat + Glass fibre (3.5mm)

Glass fibre (3mm)

Perforated Al Honeycomb (60mm)

Al profile (60X30mm)Al inserts

(Ø40mm)

Page 7: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

MM Vacuum table (1300mmX600mmX60mm)

Page 8: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Vacuum Table Cross section

Perforated Al honeycomb

Page 9: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Vacuum table inserts

Page 10: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Vacuum table QC

CERN Metrology lab CERN PH/DT

Temperature: 20°C Planarity : 0.077mm

Temperature : 21°C Planarity : 0.08mm

Temperature : 22.5°C Planarity : 0.03mm

There’s a temperature influence on flatness to be investigated.

Page 11: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Reference holes on boards for alignment Ultem plugs to avoid drilling panels after

assembly All plugs are precisely pre-glued on the

board using a dedicated tool Aluminium frame pre-assembled on tool Aluminium honeycomb Araldite 2011 is the best candidate for

gluing Panel manufacturing in one shot

MM panel Design

Page 12: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

4 reference holes.

Assembly tool

Page 13: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Board on Assembly tool

Page 14: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

4 reference holes.

Board alignment

Page 15: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

2 pins Ø5g6 X Ø5,5g6

Board alignment

Page 16: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Ref.

Ref.

Board Alignment

Page 17: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Ø5.50

Ø5.0

Reference plugs gluing

Ø5.50

Page 18: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

PCB Alignment

Alignment pin

Reference plug gluedCyanoacrylate 3M

EC100

Page 19: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Ref.

Spacer

Board

Alignement

All plugs glued

Page 20: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Board installation on Vacuum table

Page 21: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Ref.

Board indexation

… vacuum pump ON

Page 22: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Aluminium frame assembly

Page 23: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

2 reference holes per profile

Aluminium frame assembly

Page 24: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Aluminium frame installation

Page 25: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Honeycomb installation

Page 26: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Ref.

Ref.

2nd board installation on 2nd VT

Page 27: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Vacuum Table Ref.

Vacuum Tables alignment

Page 28: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Vacuum tables alignment

Precision shims (11,4mm)

Page 29: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Polymerisation

Page 30: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Assembled and glued on drift panel using alignment holes

Mesh glued on well defined surface.

Acts as gas manifold.

Large gluing area. Ground connection

Mesh support frame

Page 31: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Mesh support frame

Joint groove

Ground connection holes

Gas IN/OUT

Page 32: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Gas IN/OUT (Ø2,5mm)

Gas distribution channel

Gas distribution holes (Ø0.5mmØ1.5mm)

Cleaning channel

Surface glued on drift panel

Mesh support frame

Page 33: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

Board connection

Alignment pin

Board

Fixation pins and ground connection

Deflection = 0.01mm

Page 34: Status report on  MicroMegas  mechanics

Jordan Degrange - Francisco Perez Gomez CERN PH/DT

View of Zebra connector encapsulated

Page 35: Status report on  MicroMegas  mechanics

Prepare all needed elements for 1 panel assembly (frame, plugs, pins, etc..)

Manufacturing of 1 full set of mesh support. Investigation of temperature and humidity influence on

VT flatness Drill reference holes on vacuum tables. Assembly and QC of 1 panel for tooling and procedure

validation Test on gas distribution Test on mesh gluing Ground connections tests Test on zebra fixation Electrical tests on Zebra connectors

Francisco Perez Gomez / Hans Danielsson CERN PH/DT/EM2

Future plans and tasks 15.01.14