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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