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Clic Vertex Studies

01/21/2014

François-Xavier NuiryWolfgang Klempt

Fernando Duarte RamosMiguel Angel Villarejo

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NEXT STUDIESStave prototypes present at CERN

1. Finalisation of thermal tests with full sandwich prototype (NIDA Core).First comparisons with simulations.

2. Thermal tests with full sandwich prototype (ROHACELL Core). Same boundary conditions as before.

Comparisons with simulations.

3. Additional studies of the stave temperature gradient with IR cameraUpgrade of the set up (Purchase of AMTIR material: amorphous material transmitting infrared radiation).Data acquisition with IR cameraComparison with Simulations

THERMAL STUDIES

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NEXT STUDIESStave prototypes present at CERN

1. Comparison with the MECHANICAL MEASURMENT LABORATORY (EN dept.)3 points bending tests with same span (180mm)Conclusion concerning stave flexural stiffness measurements

2. Vibration studies (laser sensor) of full sandwich stavesSet up upgrade ongoing (new plateau + sensor support)Measurements could be done mid / end of February

STAVE MECHANICAL STUDIES

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NEXT STUDIESNew stave prototypes

Simulation of lattice staves done with a new technique (pre-moulded skins)

Simulation and prototyping of new full sandwich staves (New materials, NTPT collaboration, etc…)

Design and simulation work…then prototyping

Simulation of filament winding staves

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News

Arrival of a new Engineer (1/02/2014, VIA program) in PH/DT.-Main role: setting up a laboratory dedicated to composite prototyping and characterisation.-Collaboration with ALICE experiment.-Collaboration with CLIC vertex studies. Work description (proposal):

Francois Boyer will be asked to realise different type of prototypes within the CLIC VERTEX detector project. Several techniques are studied: standard sandwich structures, filament winding, very thin prepreg implementation. Here is the list of the proposed activities: -Material procurement (Prepreg, simple fibres (3K, 6K, etc.), resin, core materials, tools). -Setting up a material library. This library would be a database of fibers, resins, prepregs, and core materials suitable for the vertex detector. -Stave prototyping (different designs proposed). This R & D activity can be done in collaboration with other experiment (ILD), institutes/universities and companies (TPT, Composite design, etc...). The manufacturing developments of filament winding staves prototypes will be asked.The manufacturing improvement of full sandwiches and open sandwiches staves will be proposed in order to get small productions with qualities close to industrial standards. -Specific tooling used for the prototyping (design with Catia / Ansys ACP and production follow up) -Prototype characterisationMeasurements of flatness, dimensions, mass, flexural stiffness, torsional stiffness, and eventually X0 are the minimum characteristics needed for each prototype. Supervisors: Francois-Xavier NUIRY and Fernando DUARTE RAMOS.