Positron production at extreme light infrastructure – nuclear physics (ELI-NP)

Journal Article · Tue Feb 24 00:00:00 EST 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4909604· OSTI ID:22390999

Oprisa, A., E-mail: [e-mail]; Balascuta, S., E-mail: [e-mail]; Ur, C. A., E-mail: [e-mail] ^[1]

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1. Extreme Light Infrastructure - Nuclear Physics, IFIN-HH, Magurele-Bucharest (Romania)

Applied and material physics studies with positron beams of Fermi–surfaces, defects, interfaces etc. offer excellent diagnostics tools. At ELI-NP, an intense γ beam of about 10{sup 11} photons/s with energies up to 3.5 MeV will be used to generate a positron beam via pair production in a tungsten converter target. To obtain a high intensity beam of moderated positrons the design of the positron source is of high importance. The design of a dedicated positron source at ELI–NP is being investigated based on extensive GEANT4 simulations. The goal of the simulations is to optimize the geometry of the target and the gamma beam collimation. We present here the characteristics of the positron beam obtained for different geometries of the converter target.

• OSTI ID: 22390999
• Journal Information: AIP Conference Proceedings, Vol. 1645, Issue 1; Conference: Carpathian Summer School of Physics 2014, Sinaia (Romania), 13-26 Jul 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
FERMI LEVEL
G CODES
INTERFACES
MEV RANGE
PAIR PRODUCTION
PHOTONS
POSITRON BEAMS
POSITRON SOURCES
POSITRONS
TUNGSTEN
VISIBLE RADIATION