. Airborne radar. Airplanes; Guided missiles. 11-2] THE KLYSTRON 595 between the electrons would cause the beam to expand and be lost to the walls of the drift tubes between cavities if additional magnetic focusing were not provided. To constrain and collimate the electron beam, the beam is brought into a strong magnetic field parallel to the beam axis. This magnetic field is continued until the beam has passed through the final cavity, and is then removed. This allows the electron beam to spread because of its own space charge until the power density in the beam is reduced to an acceptably lo
. Airborne radar. Airplanes; Guided missiles. 11-2] THE KLYSTRON 595 between the electrons would cause the beam to expand and be lost to the walls of the drift tubes between cavities if additional magnetic focusing were not provided. To constrain and collimate the electron beam, the beam is brought into a strong magnetic field parallel to the beam axis. This magnetic field is continued until the beam has passed through the final cavity, and is then removed. This allows the electron beam to spread because of its own space charge until the power density in the beam is reduced to an acceptably low value, so that the beam can strike the surface of the collector without melting it. A schematic diagram of a high-power multicavity klystron amplifier with magnetic focusing is shown in Fig. 11-22. Collector- Output Cavity Tuning Diaphragm- Magnetic Circuit- Water Circuit • Electron Bea -Output Window Electron Bunch -Output Iris. -Anode Pole Piece Fig. 11-22 Schematic Diagram of a High-Power, Multicavity Klystron Amplifier, with Magnetic Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Povejsil, Donald J. Princeton, N. J. , Van Nostrand
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Keywords: ., bookcentury1900, bookcollectionbiodiversit, booksubjectairplanes
