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Innovations in Ladder Assembly and Repeater Design for Enhanced FLEX Performance

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brice
26 diapositives · 402 Views · Oct 04, 2014

This document highlights the advancements and challenges in the assembly of ladders and the design of repeaters for FLEX systems. Key achievements include successful thick gold deposition eliminating shorts, while addressing issues with cover layer cutting accuracy. Future tasks involve discussing jig types for half and full ladder assemblies, the importance of bonding tests, and optimizing cooling systems. Proposed hybrid connection designs aim to reduce pin complexity while enhancing reliability. Collaboration with Japanese companies like RIKEN and REPIC is crucial for further development.

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  1. SVD3 misc. topics • FLEX • Ladder assemble • Repeater design

  2. FLEX • Put cover layer • To avoid shorts due to abnormal Au deposition. • Delivered • Thick Au (0.35um) succeeded • No shorts • The accuracy of cover layer cutting is poor. • No problem • Bonding test • Next week

  3. Cover layer put

  4. Problem on SVD2.1 FLEX Gold Bridging (short) from upper flex to traces below

  5. Glue is removed by plasma ashing

  6. Ladder Assembling Possibility of ladder assembling in Japan RIKEN bonding machine are in REPIC company (Chiba) We can use it until August 2007. RIKEN/REPIC KEK KEK Half ladder Assemble DSSD+FLEX+Hybrid Wire bonding Full ladder Assemble Test What assembly jig we need? How many kinds of jig Re-use of SVD2 jig is possible? Discuss with company in the next week

  7. Jigs Half ladder assemble SVD2 layer4 SVD3 4 kinds of Jig? L1/L2+FW/BW

  8. Jigs • Modify this part

  9. Repeater design • Design proposed by Vienna • Hybrid connection on REBO • To avoid many pins between REBO and MAMBO • (SVD2: connector on MAMBO) • Difficulty on connection. • Specification is not decided yet • Connector on hybrid=NANONICS • Cable : Same as SVD2 • Connector on REBO/MAMBO: Not Yet

  10. SVD2 case RJ45 conn. TOP view From Hyb. To FADC NANONICS*4

  11. SVD2 case Side View Cooling Water pipe RJ45 REBO Top plate NANONICS MAMBO

  12. Idea 1: SVD3(Vienna)

  13. SVD3 case Cabling path is very tight TOP view RJ45 conn. From Hyb. To FADC NANONICS*4

  14. SVD3 case Cooling Water pipe Side View RJ45 REBO Top plate NANONICS MAMBO Need hole REBO

  15. Idea 2: Short REBO TOP view RJ45 conn. From Hyb. To FADC NANONICS*4

  16. Idea 3: reduce #REBO Cooling Water pipe Side View RJ45 REBO Top plate NANONICS MAMBO We need at least 18 hybrids readout/DOCK (We have 24 hybrids readout now)

  17. Idea 3: reduce #REBO We need at least 18 hybrids readout/DOCK TOP view RJ45 conn. From Hyb. To FADC NANONICS*4 NANONICS*5 NANONICS*4 NANONICS*5

  18. Meeting with Vienna • From 18:00- (30325)

  19. Backup

  20. S/N ratio calculation P-side:14mm×76mm=125W(1mm-t), 630W(0.2mm-t) N-side:22mm×25mm= 28W(1mm-t), 140W(0.2mm-t)

  21. Connector choice • REBO connector: FTSH-125-01-L-DV-EJ-K-A • Surface mount is not tough against conn. cycle. =>Through hole type is better. • REBO connector: FTSH-125-01-L-D-(RA)-EJ-K

  22. Connector choice • REBO: FTSH-125-01-L-DV-EJ-K-A • Surface mount =>Through hole type I type Tough for conn. cycle Hard to connect L type Damaged by conn. cycle Easy to connect

  23. Assemble • We have all ladder components( bridge, rib..) • Assembling procedure • Assemble half ladder (DSSD, Hybrid, FLEX) • Wire bonding • Test (w/ APVDAQ? Need connector for nanonics flat cable) • Assemble full ladder (bridge, rib) • Where? • Princeton? • Hybrid production. APVDAQ. • Less man power? • Melbourne? • send Jig from KEK? • In Japan? • How to make bonding? RIKEN, HPK…

  24. Hybrid • Cooling problem(thermal connection TPG and AlN block) Change hole shape?