Channel multiplier CRT

The paper describes a cathode-ray tube in which the scanning and light generating functions are separated by a large-area electron multiplier. The multiplier is scanned by a low-voltage, low-current electron beam. The amplified electron output from the multiplier is accelerated to the fluorescent screen to produce a bright display. Suitable electron multipliers have been made and tested in a specially designed magnetically scanned CRT. The approach allows much more freedom in cathode-ray tube design and some examples of the advantages to be gained are described.