Signals in the Well Electron Multiplier with the DLC anode

We study signals induced in the resistive Well MPGD constructed with the single DLC layer evaporated on top of a printed circuit mesh which was designed with various configurations surrounding either single hole or group of holes. As shown, signals are induced on the output readout elements (strip/pad/pixel) by both electrons and positive ions drifting in the blind well-like hole. An additional electron component is clearly seen in signals and related to the charge dispersed along the resistive layer. We present for the first time, that the ion tail induced on the readout elements can be suppressed to the level below 1% by proper designing the detector.