AMS 02 Electronics Overview

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AMS 02 ElectronicsOverview

• Mike CAPELL, MIT
• CERN 03 May 02

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Electronics for Flight

• Baseline Detector
• ACC 8 Paddles, 1 PMT/End
• ECal 9 Superlayers,324PMT (2x2)
• RICH 700 PMT (4x4 pixels)
• ToF 34 Paddles, 2 PMT/End
• Tracker 192 Ladders w/Laser Align.
• TRD 82 Modules, 64 tubes each.
• StarTracker (2 cameras, 1 elect. box)
• Magnet with 4 cryocoolers

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Electronics Boxes

• Boxes located on radiators
• Crates E, J, JT, M, R, S, T, U, UG
• xPDs (1 per crate), xE,J,JT,M,R,S,T,U,UG
• Others group
• ASTC, ASTC - Amiga Star Tracker Elect
• CAB Cryomagnet Avionics Box Cryomag
• CCDB Cyrocooler Driver Cryomag
• CVB Cryogenics Valve Box Cryomag
• CDDx CyroMag Dump Diodes Cryomag
• CUPS CyroMag Avionics UPS Cryomag
• TTCS Tracker Thermal Control Tracker
• LAD Laser Alignment Drivers Tracker
• PDB Power Distribution Box Elect
• UGB(S,C) TRD Gas Box TRD

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Boxes on Radiators View from Magnet
CAB
TTCS
TTCS
Interferences
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Thermal ICD

• Boxes on radiator see same thermal environment.
• All boxes must meet same thermal requirements
• Definition altered
• Was crate wall temperature
• Now Radiator interface temp.
• Card edge temp (-0cold, 5 hot)
• Radiator Interface all Boxes
• SURVIVAL -40 to 80C
• OPERATION -20 to 50C (was 30C)

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Mechanics

• Designs status Luca/CGS
• PCB layout of boards
• Board Mechanics
• Crate Backplane
• Crate Mechanics
• PCB layout of DC-DC
• DC-DC Mechanics
• xPD elements (filters, control elec.)
• Wiring connectors
• xPD Mechanics

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Power Budget
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Electronics Pending Design Questions

• Location Format of HV Lin Reg.
• For E, R, S in Crate or xPD or ?? In Crate
• Format Mounting of xPD control Elect
• Name, universality (100g) ?
• Design of xPD 28V input filters (100g) ?
• Connections within xPD Wiring
• LV (Motherboard?), HV, 28V
• xPD LV HV External Connectors Scheme
• LV Power feeds into crates backplane
• to backplane, to front panels ? studs
• JPD DC-DC converters (CAEN too small) 2 opt.
• Capacity of 120V DCDC for UHVG fixed
• PMT per HV Lin Reg Channel for E 1 or 2
• J Crate contents Diet Committee ! fixed

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Electronics Weight - Previous
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Electronics Weight Previous (CSIST Feb 02)

• Boxes (15 Jan) 426 Kg
• ToF34,ACC8 -13
• Extra Side Walls -11
• Star Tracker 8
• Intercrate cables 50
• Total 460 Kg
• 10Kg for current PDB requirements,
• 3Kg more accurate DC DC weights

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Weight Summary

• Current Best Estimate
• 77 Kg Overweight.

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