Speaker
Description
Copper–Kapton flex cables remain a promising alternative to coaxial cables for the XLZD photosensor readout. Detailed measurements of a 2-layer prototype, together with ongoing tests of a representative 3-layer "stripline" prototype, indicate that signal transmission over the required cable lengths is feasible with acceptable attenuation for a 100 MS/s DAQ. In particular, tests and simulations suggest that the flex-cable performance is suitable for both the Skin detector and the TPC readout and may negate the need for cold pre-amplification at the source.
We will present the latest prototype measurements, a preliminary discussion of the cabling design, and the fabrication status of a 20-m flex cable representative of the XLZD cabling requirements for further validation. These results strengthen the case for flex cables as a practical readout solution for XLZD and will inform the next steps in the system design.