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Manuscript Title: The macroparticle code MACPAR to simulate the beam-beam interaction
of high energy linear electron-positron colliders. | ||

Authors: S. Ritter | ||

Program title: MACPAR | ||

Catalogue identifier: AADP_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 39(1986)71 | ||

Programming language: Fortran. | ||

Computer: ESER. | ||

Operating system: MVT 6.1. | ||

RAM: 1700K words | ||

Word size: 32 | ||

Keywords: Particle physics, Elementary, Event simulation, Macroparticle code, Simulation of beam-beam, Interaction in High energy linear e+e Colliders. | ||

Classification: 11.2. | ||

Nature of problem:The interaction of a high energy electron and positron beam in a linear collider is considered. Analytical calculations of such processes are very restricted. Therefore the beam-beam interaction is simulated via a macroparticle computer code. The code MACPAR treats the calculation of e+-(e--) densities as well as the calculation of synchrotron photon densities, the calculation of particle trajectories and energy or angular spectra for electrons, positrons and photons. | ||

Solution method:The interaction of two beams with 10**12 electrons (positrons) is simulated by means of a macroparticle code like in plasma physics. | ||

Restrictions:In order to get a good accuracy the number of macroparticles has to be larger than 10000 and the number of cells per beam has to be larger than 8000. For the simulation of the beam beam interaction the impulse approximation is used. This means only high energy electrons and positrons can be considered (ve+- ^ c). | ||

Running time:A complete beam beam interaction at E beam = 100 GeV including synchrotron radiation needs for 10000 macroparticles and 12000 cells 180 min of central processor time on an ESER 1061 computer. |

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