Linear accelerator system with stable interleaved and intermittent pulsing

A linac-based X-ray system for cargo scanning and imaging applications uses linac design, RF power control, beam current control, and beam current pulse duration control to provide stable sequences of interleaved pulses having different energy levels, for example alternating 4 MeV and 6 MeV pulses o...

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Bibliographische Detailangaben
Hauptverfasser:	Nighan, Jr. William L, Rolin John Howard, Henderlong Devin Kirk, Korringa Maarten
Format:	Patent
Sprache:	eng
Schlagworte:	DETECTING MASSES OR OBJECTS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS PLASMA TECHNIQUE PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS TESTING
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Beschreibung
Zusammenfassung:	A linac-based X-ray system for cargo scanning and imaging applications uses linac design, RF power control, beam current control, and beam current pulse duration control to provide stable sequences of interleaved pulses having different energy levels, for example alternating 4 MeV and 6 MeV pulses or other energies where the difference in levels is at least approximately 1 MeV and less than approximately 5 MeV. The pulse repetition rate can be 100-400 pulses per second or more. In an embodiment, a cool down calculation is combined with automatic frequency control to provide stable energy and dose per pulse even upon restarting of pulsing after an "off" period of indeterminate duration.