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L6 Ladder assembly

L6 Ladder assembly. T. Tsuboyama 13 Sept. 2011. Motivation. The assembly of Origami needs repetition of gluing and wire bonding. If this is done in companies, we will occupy the production for much longer time than wire bonding.

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L6 Ladder assembly

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  1. L6 Ladder assembly T. Tsuboyama 13 Sept. 2011

  2. Motivation • The assembly of Origami needs repetition of gluing and wire bonding. If this is done in companies, we will occupy the production for much longer time than wire bonding. • I summarize the necessary steps for the ladder assembly and estimate the necessary period. • These assumptions have not been confirmed by Onuki, Irmler and Gfall, who are designing the Origami ladder structure.

  3. Origami module structure • A Origami module consists of DSSD, Airex sheet (heat insulator), Origami PCB and Pitch adapters. Pitch adapters are used to lead the signal in bottom (r-phi) side to the top (ORIGAMI) side. PAs are glued to DSSD and ORIGAMI. ORIGAMI PCB Airex sheet (1mm thick) DSSD PA (Pitch adapters for the bottom side strips) ORIGAMI PCB Airex sheet (1mm thick) DSSD

  4. Origami module structure • Gluing: • DSSD and PA • DSSD and Airex • Airex and ORIGAMI • Origami and PA ORIGAMI PCB Airex sheet (1mm thick) DSSD PA (Pitch adapters for the bottom side strips) ORIGAMI PCB Airex sheet (1mm thick) DSSD The assembly is done in 7 steps. • Wire bonding • DSSD and PA (r-phi) • DSSD and Origami (Z) • PA and APV25

  5. Summary of Origami module production • 4 nights  Waiting for glue cure • 2-3 days  Wire bonding • Even the wire bonding can be done quickly, we need 6-7 working days for completion a module. • Gluing: • DSSD and PA • DSSD and Airex • Airex and ORIGAMI • Origami and PA • Wire bonding • DSSD and PA (r-phi) • DSSD and Origami (Z) • PA and APV25

  6. DSSD without ORIGAMI(Normal hybrid modules) • gluing • top side PA • bottom side PA Hybrid (double sided) Kapton flex DSSD • Wire bonding on both sides • top side • bottom side 3 working day will be necessary.

  7. L6 Ladder assembly • Layer6 = 3 Origami modules + 2 Normal hybrid modules • If we assemble ORIGAMI modules in sequence we need • 6x3 days for ORIGAMI modules • 3x2 days for Normal hybrid modules. • 2 days for full ladder assembly • Total 18+6+2=26 days. 1 month if we work 25 days per month. • We need ~20 ladders (17 installed, 3 spares) • We will need 20 months.

  8. L6 Ladder assembly • We should shorten the time for ladder production. • What if we can prepare enough assembly jigs? • 3 Origami modules can be made in parallel. • 4 days for glue cure • 3 days for wire bonding. • Normal modules can also be assembled in parallel, we may reduce more. A ladder could be made in 15 days. • This will be about same for all ladders. • 10 months are necessary to produce 20 ladders. • If we can not shrink the ladder production period, we need to share a Layer by several groups.

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