Wedge-and-strip anode

Noise from a resistive output structure is avoided in the wedge-and-strip anode. The structure is shown in Fig. 6.6. 

Figure 13. Scheme of a wedge and strip position sensitive anode. 

Almost continuous position information can be obtained from an MCP-PMT with a resistive anode or with a micromachined wedge-and-strip geometry [247, 248, 262, 312] (see also Sect. 6, page 213). The detector principles are shown in Fig. 3.11. 

A problem shared by the crossed-wire anode detector with resistor chain, the resistive-anode detector and the wedge-and-strip detector is that ratios of the pulse amplitudes have to be calculated. However, it is difficult to calculate ratios with high speed, no matter whether analog or digital calculation is being used (see Sect. 3.5, page 39). 

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