Layer 0 in D0 silicon tracker for Run2b

We report on the status of R&D of the innermost layer of the D0 Silicon Tracker for Run2b. Because of space constraints, the cooling issues, and the amount of material, the analog signal from the sensor must be transmitted to the readout chip. This scheme is a potential noise source due to the extra capacitive load and possible RF pickup. We focus on the noise studies to address these issues.