Device for the achromatic magnetic deflection of a beam of charg

Details Device for the achromatic magnetic deflection of a beam of charg Device for the achromatic magnetic deflection of a beam of charg

1980-04-03

1982-03-30

Dixon, Harold A.

Radiant energy

With charged particle beam deflection or focussing

Magnetic lens

3133611, 31511181, G21K 108, H05H 0000

Patent

active

043226221

ABSTRACT:
An achromatic magnetic deflection device for deflecting by an angle .phi. between .pi. and 2.pi. a beam of charged accelerated particles having different momentum. This device comprises an electromagnet provided with pole pieces delimiting three contiguous sectors, the whole of these sectors, having an axis of symmetry XX, presenting flat input E and output S faces and common faces F.sub.1 and F.sub.2 in an arc of a circle, the position, the radius of curvature of these faces F.sub.1, F.sub.2 as well as the value of the magnetic induction in the sectors being chosen so that the different paths are substantially orthogonal both to faces F.sub.1, F.sub.2 and to axis XX.

REFERENCES:
patent: 3967225 (1976-06-01), Heighway
patent: 4006422 (1977-02-01), Schriber
patent: 4191887 (1980-03-01), Brown
patent: 4243916 (1981-01-01), Leboutet et al.

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