F. E. Sigler

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The Coupled-Cavity Drift Tube Linac (CCDTL) is a relatively new RF accelerator structure which plays a major role in the APT Low-Energy Linac (LEL) design. Engineering development is pushing ahead on several fronts, including thermal management, fabrication procedures, cavity and coupling slot tuning, high-power prototype fabrication and testing, supports(More)
An IGBT modulator has been developed to drive a 120 kV, 23 A Pierce electron gun. The modulator is capable of producing pulses up to 10 mus in width at repetition rates up to 10 Hz with no active reset. The pulse rise time on the electron gun will be approximately 2 mus and the remaining 8 mus of flattop is tuned to have a ripple of less than 1 percent rms.(More)
The beam-transport line for the high-power 2-MeV Fusion Materials Irradiation Test (FMIT) accelerator is one of the most heavily instrumented ever designed. A wide variety of diagnostics is required to accurately determine the characteristics of the beam that will ultimately be used. Because the machine is only 2 MeV, the packing factor in the high-energy(More)
Currently ongoing at Los Alamos National Laboratory is a program to develop high-power, planar 100-300 GHz traveling-wave tubes (TWTs). The promise of planar TWT technology is: 1) the radio-frequency (RF) structures lend themselves well to established micro-fabrication techniques: and 2) by spreading the electron beam in one dimension, we effectively(More)
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