Progress on the Prototype design Catania Goikoetxea, Mikel Navarro Medrano, Javier Mainz, March 31st, 2011 1.

Progress on the Prototype design

Catania Goikoetxea, MikelNavarro Medrano, Javier

Mainz, March 31st, 20111

Previous prototype

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16 Crystals separated in 4 groups, inserted in each of the alveole quarters

CF Alveole

PWO Crystals

Al Insert

2 preamplifiers per Crystal

Capsules with 2 APD per Crystal

L Frames to support Capsules. Glued to the Crystal

Grease between APD and Crystal

Drawbacks

• APDs Capsules redesign

• Frames redesign

• Preamplifiers configuration

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New design criteria

• APDs: together and centered?– Test of configuration (together or not together)

• Preamplifiers configuration: as close as possible due space limitations– Insert thickness

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Capsules

• Compactness around APDs: gives more gluing surface between Crystal and Frame.

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Inserted from sides

Gluing surface

Active area

Patch Panel

• Removes wiring between APDs and Preamplifiers.

• Mounted on Capsules.• 2 types of Patch Panels.

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Assembly1. Patch panel

insertion2. APD insertion

guided by pins 3. Pins welding?

Preamplifiers

• New stacking method: one opposite to the other.

• Grouped over a single Tray (16 per Tray).º

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Connectors for pins

Spacers between Preamplifiers and Tray

Preamplifiers

• Positioning.

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Frame

• Group of 4 Crystals/Capsules.• Groove for spare glue.

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0.3 mm groove

New design

Mounting group

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• 4 Crystals• 1 Frame• 4 APD Capsule

groups

To be assembled in each Alveole quarter hole

Frame - Materials

• PEEK: expensive?• ABS: properties?• Aluminium:

– Better for thermal behaviour– Electric point of view?– Possible to glue?

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Alveoles

• 10 mm of gluing surface.• Front covered.• Frames separated by middle cross?

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10 mm of gluing surfaceMiddle

cross

Holes for Optic Fibers in the front

Aluminium Insert

• Thickness of 5-6 mm.• 0.1 mm from Alveoles for gluing• Possibility of assembly guides• Grooves for Trays

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6 mm thick

5 mm thick

Future tasks• Material analysis.• Load analysis of Insert and Alveoles.• Thermal analysis.

– Test different ideas for cooling• Vertical and horizontal load analysis.• Mounting plates, Supports… Continue with

the design• Assembly procedure

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Questions?

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