Fig. 7

Measured response of the current pulse amplification circuit. Waveforms were measured at the monitoring points (see Fig. 6). The time axis is defined so that the peak timing of the input waves is at 0 s. a Input pulse measured at CHIP IN, b output waveform measured at AMP. OUT, and c magnified view of panel b focusing on \(5\)-\(10\,\mathrm{ ns}\). Seven waveforms in panel a show examples of input pulse heights from \(35\,\mathrm{ mV}\) to \(200\,\mathrm{ mV}\), which include the highest one (i.e., the purple line) among all the measured waveforms. Each waveform in panels b and c corresponds to the waveform of the same color in panel a. In panel a, the wave reflected at the input terminal of the chip appears; it does not appear in panel b because it is absorbed at the MCP side. The timing variation of the cross-points between the output rising waveforms and \(1.08\,\mathrm{ V}\) is less than \(1\,\mathrm{ ns}\) (see panel c)