Transverse modulation of the positron beam density by using the laser standing wave

11th International Symposium on Radiation from Relativistic Electrons in Periodic Structures

Babaev, A.A.^1 ; Dabagov, S.B.^2,3,4

Tomsk Polytechnic University, Lenin Ave. 30, Tomsk

634050, Russia^1

INFN Laboratori Nazionali di Frascati, via E. Fermi 40, Frascati

00044, Italy^2

RAS P. N. Lebedev Physical Institute, Lenin Ave. 53, Moscow

119991, Russia^3

NR Nuclear University MEPhI, Kashirskoe highway 31, Moscow

115409, Russia^4

关键词: Accelerator physics;    Beam-shaping;    Density of particles;    Laser standing waves;    Positron beams;    Specific properties;    Standing wave;    Transverse modulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/732/1/012001/pdf
DOI  :  10.1088/1742-6596/732/1/012001

来源: IOP

【 摘 要 】

Recently it was shown that charged particles motion in the field of standing electromagnetic wave can undergo the features similar to the particles channeling in crystals. When a charged particle enters the channels formed by electromagnetic standing waves at a small angle to the node (anti-node) planes its motion represents namely the oscillations between two neighboring planes. The phenomenon is mostly known as channeling in a lattice of the standing waves. Obviously, this effect can be used to handle beams in accelerator physics, more general, for the beam shaping with the specific properties. The advantage of the plane wave channeling is the absence of inelastic scattering that takes place in a crystal. The possibility to re-distribute the current density of particles in the beam by means of the laser standing wave is demonstrated.