Beam breakup instability in an annular electron beam
نویسندگان
چکیده
منابع مشابه
The beam breakup instability in quadrupole and solenoidal electron-beam transport systems
Dispersion relations are derived to determine the growth rate, dominant wavelength, and group velocity of disturbances caused by the beam breakup instability. Considerations include weak and strong focusing, x-y coupling in solenoidal transport, the spacing of accelerator cavities, and periodically pulsed beams. Beam breakup growth is minimum when the cavity spacing equals an integral number of...
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The beam breakup (BBU) instability has been investigated in high-current, long-pulse electron beams propagating through microwave cavities. Experiments are performed using a relativistic electron-beam generator with diode parameters: 0.7-0.8 MV, 1-15 kA, and OS-l.5 ps. The magnitude of the solenoidal magnetic field places these experiments in an intermediate regime between strong focusing and w...
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Using a new technique to generate cold electron beams, an electron-beam positron-plasma experiment was performed in a previously unexplored range of energies. An electron beam, formed from a thermalized room-temperature electron plasma, is transmitted through a positron plasma stored in a quadrupole Penning trap geometry. The transit-time instability, which is excited by the beam, was previousl...
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It is shown herein that the energy spread of order one percent in the beam train in the NLC can suppress the emittance growth due to structure misalignments and initial jitter E ect of Energy Spread in the Beam Train on Beam Breakup Instability G. V. Stupakov September 20, 1999
متن کاملElectron-beam instability in left-handed media.
We predict that two electron beams can develop an instability when passing through a slab of left-handed media (LHM). This instability, which is inherent only for LHM, originates from the backward Cherenkov radiation and results in a self-modulation of the beams and radiation of electromagnetic waves. These waves leave the sample via the rear surface of the slab (the beam injection plane) and f...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 1993
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.354161