Radiant energy – Irradiation of objects or material – Ion or electron beam irradiation
Patent
1995-01-25
1995-09-19
Berman, Jack I.
Radiant energy
Irradiation of objects or material
Ion or electron beam irradiation
250397, G01R 1900
Patent
active
054517940
ABSTRACT:
An electron linear accelerator for use in industrial material processing, comprises an elongated, resonant, electron accelerator structure defining a linear electron flow path and having an electron injection end and an electron exit end, an electron gun at the injection end for producing and delivering one or more streams of electrons to the electron injection end of the structure during pulses of predetermined length and of predetermined repetition rate, the structure being comprised of a plurality of axially coupled resonant microwave cavities operating in the .pi./2 mode and including a graded-.beta. capture section at the injection end of the structure for receiving and accelerating electrons in the one or more streams of electrons, a .beta.=1 section exit section at the end of the structure remote from the capture section for discharging accelerated streams of electrons from the structure and an rf coupling section intermediate the capture section and the exit section for coupling rf energy into the structure, an rf system including an rf source for converting electrical power to rf power and a transmission conduit for delivering rf power to the coupling section of the structure, a scan magnet disposed at the exit end of the structure for receiving the electron beam and scanning the beam over a predetermined product area and a controller for controlling the scanning magnet and synchronously energizing the electron gun and the rf source during the pulses.
REFERENCES:
patent: 4687936 (1987-08-01), McIntyre et al.
patent: 4687987 (1987-08-01), Kuchnir et al.
patent: 5051600 (1991-09-01), Schuetz et al.
Bess et al., "External Beam Current Monitor For Linear Accelerators", Rev. Sci. Inser., vol. 30, No. 11, pp. 985-988 (1959).
Craig Stuart T.
Drewell Norbert H.
Labrie Jean-Pierre
Lawrence Court B.
Mason Victor A.
Atomic Energy of Canada Limited
Berman Jack I.
Beyer James
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