PowerPoint Presentation

Status report on MicroMegas mechanicsCERN PH/DT12/05/13Jordan Degrange / Francisco Perez Gomez CERN PH/DT 1Concept remindVacuum table manufacturing and measurementsMM panels designFuture plans

12/05/13Jordan Degrange / Francisco Perez Gomez CERN PH/DT ContentA sandwich of two soft skin is glued without mechanical constraints.A sandwich is:One glass fibre skin (0.5mm)Aluminium honeycomb surrounded with an aluminium frame Second glass fibre skin (0.5mm)Sandwich schematic viewJordan Degrange/Francisco Perez Gomez PH/DTConcept (1/2)

Manufacturing conceptThe skins are sucked with two vacuum tablesThe vacuum table surfaces are perfectly flatThe vacuum table surfaces are set in parallel positionJordan Degrange / Francisco Perez Gomez PH/DTConcept (2/2)

Dimensions: 1300X600Manufactured at CERNOuter surface: Epoxy gel coat EP Gel coat Wei (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 2011Vacuum table components

Jordan Degrange - Francisco Perez Gomez CERN PH/DTVacuum table exploded viewGel coat + Glass fibre (3.5mm)Glass fibre (3mm)Perforated Al Honeycomb (60mm)Al profile (60X30mm)Al inserts (40mm)

Jordan Degrange - Francisco Perez Gomez CERN PH/DTMM Vacuum table (1300mmX600mmX60mm)

7NSW/MM working group 5.12.2013

Jordan Degrange - Francisco Perez Gomez CERN PH/DTVacuum Table Cross section

Perforated Al honeycomb

Jordan Degrange - Francisco Perez Gomez CERN PH/DTVacuum table inserts

Vacuum table QCCERN Metrology labCERN PH/DTTemperature: 20CPlanarity : 0.077mmTemperature : 21CPlanarity : 0.08mm

Temperature : 22.5CPlanarity : 0.03mm

Theres a temperature influence on flatness to be investigated.

Jordan Degrange - Francisco Perez Gomez CERN PH/DTReference holes on boards for alignmentUltem plugs to avoid drilling panels after assemblyAll plugs are precisely pre-glued on the board using a dedicated toolAluminium frame pre-assembled on toolAluminium honeycombAraldite 2011 is the best candidate for gluingPanel manufacturing in one shot

Jordan Degrange - Francisco Perez Gomez CERN PH/DTMM panel Design

4 reference holes.

Jordan Degrange - Francisco Perez Gomez CERN PH/DTAssembly tool

Jordan Degrange - Francisco Perez Gomez CERN PH/DTBoard on Assembly tool

4 reference holes.Jordan Degrange - Francisco Perez Gomez CERN PH/DTBoard alignment

2 pins 5g6 X 5,5g6Jordan Degrange - Francisco Perez Gomez CERN PH/DTBoard alignment

Ref.Ref.Jordan Degrange - Francisco Perez Gomez CERN PH/DTBoard Alignment

5.505.0Jordan Degrange - Francisco Perez Gomez CERN PH/DTReference plugs gluing5.50

Jordan Degrange - Francisco Perez Gomez CERN PH/DTPCB AlignmentAlignment pinReference plug glued

Cyanoacrylate 3M EC100

Ref.SpacerBoard AlignementJordan Degrange - Francisco Perez Gomez CERN PH/DTAll plugs glued

Jordan Degrange - Francisco Perez Gomez CERN PH/DTBoard installation on Vacuum table

Ref.Jordan Degrange - Francisco Perez Gomez CERN PH/DTBoard indexation vacuum pump ON

Jordan Degrange - Francisco Perez Gomez CERN PH/DTAluminium frame assembly

2 reference holes per profileJordan Degrange - Francisco Perez Gomez CERN PH/DTAluminium frame assembly

Jordan Degrange - Francisco Perez Gomez CERN PH/DTAluminium frame installation

Jordan Degrange - Francisco Perez Gomez CERN PH/DTHoneycomb installation

Ref.Ref.Jordan Degrange - Francisco Perez Gomez CERN PH/DT2nd board installation on 2nd VT

Vacuum Table Ref.Jordan Degrange - Francisco Perez Gomez CERN PH/DTVacuum Tables alignment

Jordan Degrange - Francisco Perez Gomez CERN PH/DTVacuum tables alignmentPrecision shims (11,4mm)

Jordan Degrange - Francisco Perez Gomez CERN PH/DTPolymerisation

Assembled and glued on drift panel using alignment holes Mesh glued on well defined surface.Acts as gas manifold.Large gluing area.Ground connection

Jordan Degrange - Francisco Perez Gomez CERN PH/DTMesh support frame

Jordan Degrange - Francisco Perez Gomez CERN PH/DTMesh support frameJoint grooveGround connection holesGas IN/OUT

Gas IN/OUT (2,5mm)Gas distribution channelGas distribution holes (0.5mm1.5mm)Cleaning channelSurface glued on drift panelJordan Degrange - Francisco Perez Gomez CERN PH/DTMesh support frameJordan Degrange - Francisco Perez Gomez CERN PH/DTBoard connection

Alignment pinBoardFixation pins and ground connectionDeflection = 0.01mm

Jordan Degrange - Francisco Perez Gomez CERN PH/DTView of Zebra connector encapsulatedPrepare 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 flatnessDrill reference holes on vacuum tables.Assembly and QC of 1 panel for tooling and procedure validationTest on gas distributionTest on mesh gluingGround connections testsTest on zebra fixationElectrical tests on Zebra connectors

Francisco Perez Gomez / Hans Danielsson CERN PH/DT/EM2 Future plans and tasks 15.01.14