Parametric exploration of intense positron beam–plasma interactions

A systematic investigation of the longitudinal fields excited in a plasma by a short, dense beam of positrons is carried out using two-dimensional, cylindrical geometry, particle-in-cell code simulations. In particular, we examine the behavior of the accelerating and decelerating fields of the wakefield as a function of beam charge, radius, length, and plasma density. The parameters are chosen to be consistent with those employed in current and future experiments designed to elucidate the physics of positron beam–plasma interactions.

[1]  K. A. Marsh,et al.  Plasma-Wakefield Acceleration of an Intense Positron Beam , 2003 .

[2]  B. Blue,et al.  Ultrarelativistic-positron-beam transport through meter-scale plasmas. , 2003, Physical review letters.

[3]  B. Blue,et al.  High-energy density plasma science with an ultrarelativistic electron beam , 2002 .

[4]  John P. Verboncoeur,et al.  Particle-in-cell simulations of plasma accelerators and electron-neutral collisions , 2001 .

[5]  F. Decker,et al.  Observation of plasma focusing of a 28.5 GeV positron beam. , 2001, Physical review letters.

[6]  W. Mori,et al.  Plasma-wakefield acceleration of a positron beam. , 2000, Physical review. E, Statistical, nonlinear, and soft matter physics.

[7]  W. Mori,et al.  Simulations of a meter-long plasma wakefield accelerator. , 2000, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[8]  J. Rosenzweig,et al.  Observation of plasma wakefield acceleration in the underdense regime , 2000 .

[9]  Eric Esarey,et al.  Overview of plasma-based accelerator concepts , 1996 .

[10]  C. Pellegrini,et al.  Transverse dynamics of a short, relativistic electron bunch in a plasma lens , 1995 .

[11]  Davis,et al.  Experimental demonstration of dynamic focusing of a relativistic electron bunch by an overdense plasma lens. , 1994, Physical review letters.

[12]  Scott C. Wilks,et al.  Beam Loading in Plasma Accelerators , 1987 .

[13]  N. Rostoker,et al.  Propagation of High Current Relativistic Electron Beams , 1970 .