16/11/2004 z Image sensor Lens LED-Mask BIS sector 14 BIM-BIR sector 15 Side A Projective (outer layer) BIR6 BIR5 BIR4 BIR3 Ref system BIR-BIS connection BIR1 BIR2 BIM5 BIM4BIM3 BIM2 BIM1 Projective (outer layer) BIR-BIM connection BIS6BIS5BIS4 BIS3 BIS7 BIS1BIS2 HV side RO side HV side RO HV RO HV RO HV RO

16/11/2004 z Image sensor Lens LED-Mask BIS sector 14 BIM-BIR sector 15 Side C Projective (outer layer) BIR-6 BIR-5 BIR-4 BIR-3 Ref system BIR-BIS connection BIR-1 BIR-2 BIM-5 BIM-4BIM-3 BIM-2 BIM-1 Projective (outer layer) BIR-BIM connection BIS-6BIS-5BIS-4 BIS-3 BIS-7 BIS-1BIS-2 HV side RO side HV side RO HV RO HV RO HV RO

16/11/2004 BIS sector 14 BIM-BIR sector 15 Projective RASNIK mask BIM BIS BIR-BIS connection Reference system LEDs BIR Projective RASNIK mask Reference system LEDs BIR-BIM connection BIR1 BIM-BIS connection B-sensor B sensor