On the theory and simulation of multiple Coulomb scattering of heavy charged particles

Conference · Wed May 12 04:00:00 EDT 2004

OSTI ID:823655

Striganov, Sergei I ^[1]

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1. Fermilab

The Moliere theory of multiple Coulomb scattering is modified to take into account difference between scattering off atomic nuclei and electron. A simple analytical expression for angular distribution of charged particles passing through a thick absorber is found. It does not assume any special form for a differential scattering cross section and has wider range of applicability than a Gaussian approximation. A well-known method to simulate multiple Coulomb scattering is based on the different treatment of ''soft'' and ''hard'' collisions. An angular deflection in a large number of ''soft'' collisions is sampled using the proposed distribution function, a small number of ''hard'' collision are simulated directly. A boundary between ''hard'' and ''soft'' collisions is defined providing a precise sampling of a scattering angle (1% level) and a small number of ''hard'' collisions. A corresponding simulating module takes into account projectile and nucleus charged distributions and exact kinematics of a projectile-electron interactions.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 823655
• Report Number(s): FERMILAB-Conf-04/056-AD
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ANGULAR DISTRIBUTION
CHARGED PARTICLES
COULOMB SCATTERING
CROSS SECTIONS
DISTRIBUTION FUNCTIONS
MOLIERE THEORY
NUCLEI
PROJECTILES
RADIATIONS
SAMPLING
SCATTERING
SHIELDING
SIMULATION