Published 2015 | Version v1
Publication

Positron bunching and electrostatic transport system for the production and emission of dense positronium clouds into vacuum

Description

We describe a system designed to re-bunch positron pulses delivered by an accumulator supplied by a positron source and a Surko-trap. Positron pulses from the accumulator are magnetically guided in a 0.085 T field and are injected into a region free of magnetic fields through a μ-metal field terminator. Here positrons are temporally compressed, electrostatically guided and accelerated towards a porous silicon target for the production and emission of positronium into vacuum. Positrons are focused in a spot of less than 4 mm FWTM in bunches of ∼8 ns FWHM. Emission of positronium into the vacuum is shown by single shot positron annihilation lifetime spectroscopy.

Additional details

Identifiers

URL
http://hdl.handle.net/11567/964798
URN
urn:oai:iris.unige.it:11567/964798

Origin repository

Origin repository
UNIGE