Sep 15 – 21, 2019
Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy
Europe/Rome timezone

A positron source for applications using the TARANIS laser

Sep 19, 2019, 4:40 PM
Sala Elena (SE) (Hotel Hermitage)

Sala Elena (SE)

Hotel Hermitage

talk WG4 - Application of compact and high-gradient accelerators WG4


Thomas Audet (The Queen's University of Belfast)


The realization of compact positron source is of great importance for a wide range of applications such as positron annihilation spectroscopy for material science. Moreover, a number of applications could benefit from short pulse duration (sub-100 ps) positron beams.
The interaction of a high-intensity laser with high-Z solid targets can be used to produce a population of relativistic electrons which, in turn, initiate an electromagnetic cascade in the target emitting a positron beam together with electrons and X-rays. This technique can be used to produce high-current mildly relativistic to relativistic positron beams suitable for applications in a compact setup.
Preliminary experiments using the TARANIS laser facility at Queen’s University providing intensities $\sim10^{19} \: W/cm^2$ on target and simulations using the Monte-Carlo scattering code FLUKA were performed to design a compact and high-quality positron source at the Queen’s University of Belfast. Results of preliminary experiments, simulations and plans to optimize the positron source will be presented.

Primary authors

Thomas Audet (The Queen's University of Belfast) J Warwick (Queen's University Belfast) Aaron Alejo (Queen's University of Belfast) Mr Guillermo Marrero Samarin (Queen's University Belfast) Mr Cormac Rafferty (The Queen's University of Belfast) Mr Mark Cunningham (The Queen's University of Belfast) Gianluca Sarri (Queen's University Belfast)

Presentation materials