Chamber Spectrometer with a Capacitor Memory and Fet Readout
نویسندگان
چکیده
A 20-plane wire chamber spectrometer utilizing capacitors as memory elements and suitable for operation in a magnetic field is described. The (parallel) wire planes are separated by N 1 cm. The active areas of the chambers range in size from 120 X I20 cm2 t0 200 x 240 cm2, The wire separation is 1 mm. Each readout wire is connected to a separate capacitor resulting in a 30 K-bit memory for the total system. Using FET's as gates, the capacitors are read out in 32 bit words. These words are formatted into data Sets of 18 bits/spark and transferred to a PDP-9 computer. Digital processing of data is briefly described, including the computer interface and test procedures. Advantages of this system are discussed together with some performance characteristics.
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