Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 1

PP0 & Service Panels

1. Introduction2. Technical Status3. Goals for 2002

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 2

Introduction

Service panels run from detector end to end of support tube

X-section through service panels

3-D view of panels

PP0 region. All services break here

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 3

• Power wires need to be cooled

• Opto boards must be kept below 20C

• Dedicated cooling loop

12 PPO Flex Boards connectElectrical cables from modules toOptical & electrical services

Optoboards

PP0

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 4

PP0 Schematic

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 5

Technical Status: PP0 V.1

• First PP0 prototype fabricated Jan. 2001

• Rapidly became electrically obsolete

• Demonstrated folding technique to produce very long flex. Method works but,

• Yield is low & cost is high because surface area is large

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 6

Technical Status: PP0 V.2• Need second prototype to:

– Continue service integration work– Prepare for system test

• Module connector pinout specified• HV on separate connector decided• Will use micro-welded aluminum ribbon instead

of folded flex cable • Waiting for Opto-board power requirements to be

decided

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 7

Technical Status: Service Panel

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 8

Technical Status: PP1 EndPossible implementation

TOP BOTTOM

Aluminum power wires w/ gold-plated ends soldered to small flex tail with180 pin SMT connector here

This flex board carries 160A and dissipates 3.5W

6 cm

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 9

2002 Goals: PP0

• Fabricate V.2 prototype– Fab. $3K

– Connectors $3K

– Outside assembly $1K

– Testing 80 hours technician

– Microwelding 40 hours technician

• Totals– $7K

– 120 hours technician

Nov. 8, 2001 M. Garcia-Sciveres -- PP0 & Service Panels 10

2002 Goals: Service Panel• Assemble one electrical panel with carbon fiber

face sheets– Mechanical materials $1K– Aluminum wires $2K– Gold plating of wires 40 hours shop– Qualification tests for wires 80 hours tech.– PP1 end connector tail fabrication & assembly $3K– Assembly 60 hours tech.– Testing 80 hour tech.

• Totals– $6K– 220 hours technician– 40 hours shop