Plasma channel diagnostic based on laser centroid oscillations
نویسندگان
چکیده
منابع مشابه
Plasma undulator based on laser excitation of wakefields in a plasma channel.
An undulator is proposed based on the plasma wakefields excited by a laser pulse in a plasma channel. Generation of the undulator fields is achieved by inducing centroid oscillations of the laser pulse in the channel. The period of such an undulator is proportional to the Rayleigh length of the laser pulse and can be submillimeter, while preserving high undulator strength. The electron trajecto...
متن کاملCollective Centroid Oscillations as an Emittance Preservation Diagnostic in Linear Collider Linacs
Transverse bunch centroid oscillations, induced at operating beam currents at which transverse wake elds are substantial, and observed at Beam Position Monitors, are sensitive to the actual magnetic focusing, energy gain, and rf phase pro les in a linac, and are insensitive to misalignments and jitter sources. In the \pulse stealing" set-up implimented at the SLC, they thus allow the frequent m...
متن کاملOn neutral plasma oscillations
We examine the conditions for the existence of spectrally stable neutral modes in a Vlasov-Poisson plasma and show that for stable equilibria of systems that have unbounded spatial domain, the only possible neutral modes are those with phase velocities that correspond to stationary inflection points of the equilibrium distribution function. It is seen that these neutral modes can possess positi...
متن کاملRadiation sources based on laser-plasma interactions.
Plasma waves excited by intense laser beams can be harnessed to produce femtosecond duration bunches of electrons with relativistic energies. The very large electrostatic forces of plasma density wakes trailing behind an intense laser pulse provide field potentials capable of accelerating charged particles to high energies over very short distances, as high as 1GeV in a few millimetres. The sho...
متن کاملImage Watermarking System Based on Centroid Projection
We propose an image watermarking system aiming at reducing false positive rate based on the location changes of centroids of several selected points. Two secret keys are used to determine the number of selected points and the random number seed in the LL band of DWT domain, respectively, of the o r i g i ~ l and watermarked images. The number of modified pixel values is basically a tradeoff bet...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2010
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.3357175