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HBD: Final design

HBD: Final design. Itzhak Tserruya HBD Meeting, BNL, July 12, 2005. Changes wrt prototype design. Several changes are being made in the design of the final HBD wrt the prototype. The changes are made: to reduce the z envelop of the detector

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HBD: Final design

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  1. HBD: Final design Itzhak Tserruya HBD Meeting, BNL, July 12, 2005

  2. Changes wrt prototype design • Several changes are being made in the design of the final HBD wrt the prototype. The changes are made: • to reduce the z envelop of the detector • in response of lessons learned from the prototype • The main changes are: • a single 100 micron window instead of a 2x50 micron window • thinner covers, ½” honeycomb instead of ¾” in the prototype  gain 2 x 6 mm in the z envelop • a thin FR4 frame all around the covers  prevents deformation of the covers at the places of the screws. • head of the screws immersed inside the frame  gain 2 x 4 mm in the z envelop • the z envelop is now 656.4 mm (down by 23.6 mm from the original value of 680 mm) • more symmetrical shape, closer to two half cylinders • 6 mm clearance between the two halves of the detector

  3. HBD final design: global dimensions Clearance +/- 3 mm Z= 656.4 mm

  4. HBD assembled Gas out 2x21 HV connectors serving 2x3 detector modules Entrance window: Removable or glued? FR4 frame all around the spacer

  5. HBD exploded view

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