Showing papers by "J.W. Wang published in 2012"

Systems and methods for cargo scanning and radiotherapy using a traveling wave linear accelerator based x-ray source using pulse width to modulate pulse-to-pulse dosage

Abstract: Provided herein are systems and methods for operating a traveling wave linear accelerator to generate stable electron beams at two or more different intensities by varying the number of electrons injected into the accelerator structure during each pulse by varying the electron beam current applied to an electron gun The electron beams may be used to generate x-rays having selected doses and energies, which may be used for cargo scanning or radiotherapy applications

Interleaving multi-energy x-ray energy operation of a standing wave linear accelerator using electronic switches

Abstract: The disclosure relates to systems and methods for fast-switching operating of a standing wave linear accelerator (LINAC) for use in generating x-rays of at least two different energy ranges with advantageously low heating of electronic switches. In certain embodiments, the heating of electronic switches during a fast-switching operation of the LINAC can be kept advantageously low through the controlled, timed activation of multiple electronic switches located in respective side cavities of the standing wave LINAC, or through the use of a modified a side cavity that includes an electronic switch.