TY - JOUR
T1 - Production of short microwave pulses with a peak power exceeding the driving electron beam power
AU - Eltchaninov, Anton A.
AU - Korovin, Sergei D.
AU - Rostov, Vladislav V.
AU - Pegel, Igor V.
AU - Mesyats, Gennady A.
AU - Rukin, Sergei N.
AU - Shpak, Valery G.
AU - Yalandin, Michael I.
AU - Ginzburg, Naum S.
PY - 2003
Y1 - 2003
N2 - This article presents results of theoretical and experimental studies on the production of ultrashort (a few RF cycles duration) microwave pulses of gigawatt peak powers based on superradiance from high-current electron beams. With the Cherenkov backward-wave-electron-beam interaction in a low-dispersion slow-wave structure, microwave pulses with a peak power greater than the peak power of the driving electron beam have been produced for the first time. In an experiment using the SINUS-150 compact high-current electron accelerator, with a 2.6-kA injected beam current and a 330-kV electron energy, microwave pulses of 1.2 GW peak power and ∼0.5 ns duration (FWHM) were generated in the X-band. Production of superradiance pulses in a repetitive regime (3500 Hz) in the Ka-band has been demonstrated using a compact hybrid SOS-modulator. The effect of spatial accumulation of microwave energy in extended slow-wave structures with substantially nonuniform coupling has been demonstrated. In an experiment using the SINUS-200 compact accelerator, X-band pulses of ∼3 GW peak power and 0.6-0.7 ns width (FWHM) were produced with a power conversion efficiency of 150-180% and an energy efficiency of ∼15%.
AB - This article presents results of theoretical and experimental studies on the production of ultrashort (a few RF cycles duration) microwave pulses of gigawatt peak powers based on superradiance from high-current electron beams. With the Cherenkov backward-wave-electron-beam interaction in a low-dispersion slow-wave structure, microwave pulses with a peak power greater than the peak power of the driving electron beam have been produced for the first time. In an experiment using the SINUS-150 compact high-current electron accelerator, with a 2.6-kA injected beam current and a 330-kV electron energy, microwave pulses of 1.2 GW peak power and ∼0.5 ns duration (FWHM) were generated in the X-band. Production of superradiance pulses in a repetitive regime (3500 Hz) in the Ka-band has been demonstrated using a compact hybrid SOS-modulator. The effect of spatial accumulation of microwave energy in extended slow-wave structures with substantially nonuniform coupling has been demonstrated. In an experiment using the SINUS-200 compact accelerator, X-band pulses of ∼3 GW peak power and 0.6-0.7 ns width (FWHM) were produced with a power conversion efficiency of 150-180% and an energy efficiency of ∼15%.
KW - BWO
KW - Compact accelerator
KW - High-efficiency short-pulse HPM source
KW - Repetitive HPM source
KW - Superradiance
UR - http://www.scopus.com/inward/record.url?scp=0344897131&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0344897131&partnerID=8YFLogxK
U2 - 10.1017/S0263034603212064
DO - 10.1017/S0263034603212064
M3 - Article
AN - SCOPUS:0344897131
VL - 21
SP - 187
EP - 196
JO - Laser and Particle Beams
JF - Laser and Particle Beams
SN - 0263-0346
IS - 2
ER -