Engineering: MWPC design configuration schemas

Wire Pad Chamber (WPC), one gap Avalanche Cdet in parallel to current source (not shown) will reduce current flow to amplifier as ratio of impedances (full Spice-model see below)

2-gap/layer Wire Pad Chamber (WPC) OR-ing (double signal) Independent HV sources (for reliability)

Cathode Pad Chamber (CPC), one gap Single Cathode Read-Out (SCRO)

Cathode Pad Chamber (CPC), one gap Double Cathode Read-Out (DCRO) Double signal

Combined Wire strip and Cathode Pad Chamber (WCPC) Bad design Rather large loop

WCPC (Single Cathode RO scheme)

WCPC (Double Cathode RO scheme) Double signal

MWPC readout schemes for M1R1 CPC (DCRO) CPC (SCRO)

11.8mm 25.8mm 39.8mm 53.8mm -6.7mm+7.3mm -20.7mm+21.3mm 0mm Anode readout INFN chambers M1+M5 R4 SPB

10.2mm 54.8mm -22.3mm+22.3mm 0mm Anode readout PNPI chambers M2+M3,+M4 R4 SPB

10.8mm 26.2mm 38.8mm 54.2mm -6.3mm+6.3mm -21.7mm+21.7mm 0mm Anode readout CERN chambers M2+M3 R1+R2 SPB The additional ground connector we have at present is not drawn.

Double Cathode readout (CERN chambers) - Single Cathode readout INFN and CERN chambers have just less connectors on equivalent positions - INFN uses no male and female parts, as CERN does ±23.2mm ±18.8mm ± 9.2mm ±4.8mm 0mm OPB