The Design and Manufacture of Wedge and Strip Anodes

We describe the Wedge and Strip Anode (WSA), a two-dimensional position sensitive charge read-out system. Two new optimised WSA´s have been developed, giving improved position resolution over previous WSA´s for a given charge gain. We show that due to the effective absence of partition noise, WSA´s outperform resistive disk anodes at all charge levels. We present measurements of the performance of these optimsed read-outs. Finally, we have designed and built a software controlled WSA manufacturing facility, which can produce any pattern of up to 400 × 500 mm2 with an absolute accuracy of ± 2.5¿m.