Recent progress in tailoring trap-based positron beams

Recent progress is described to implement two approaches to specially tailor trap-based positron beams. Experiments and simulations are presented to understand the limits on the energy spread and pulse duration of positron beams extracted from a Penning-Malmberg (PM) trap after the particles have be...

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Bibliographic Details
Main Authors: Natisin, M. R., Hurst, N. C., Danielson, J. R., Surko, C. M.
Format: Conference Proceeding
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ATOMIC AND MOLECULAR PHYSICS
BEAM DYNAMICS
BEAM TRANSPORT
CHARGED-PARTICLE TRANSPORT
COMPUTERIZED SIMULATION
ELECTRON BEAMS
MAGNETIC FIELDS
PARTICLE ACCELERATORS
PERMEABILITY
PLASMA
POSITRON BEAMS
POSITRONS
PULSES
TRAPS
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Summary:Recent progress is described to implement two approaches to specially tailor trap-based positron beams. Experiments and simulations are presented to understand the limits on the energy spread and pulse duration of positron beams extracted from a Penning-Malmberg (PM) trap after the particles have been buffer-gas cooled (or heated) in the range of temperatures 1000 {>=} T {>=} 300 K. These simulations are also used to predict beam performance for cryogenically cooled positrons. Experiments and simulations are also presented to understand the properties of beams formed when plasmas are tailored in a PM trap in a 5 tesla magnetic field, then non-adiabatically extracted from the field using a specially designed high-permeability grid to create a new class of electrostatically guided beams.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4796071