20 research outputs found
Increase in the beam intensity of the linac-based slow positron beam and its application at the Slow Positron Facility, KEK
Recent developments of the Slow Positron Facility at the Institute of Materials Structure
Science, High Energy Accelerator Research Organization (KEK) are reported. We have
modified the converter/moderator assembly for slow positron beam production, yielding an
increase of an order of magnitude in the intensity of the beam. The first observation of
the photodetachment of the positronium negative ion (Psâ), and the installation
of a reflection high-energy positron diffraction (RHEPD) station and the initial data
obtained are reported
Development of a monoenergetic ultraslow antiproton beam source for high-precision investigation
The ASACUSA collaboration developed an ultraslow antiproton beam source, monoenergetic ultraslow antiproton source for high-precision investigation (MUSASHI), consisting of an electromagnetic trap with a liquid He free superconducting solenoid and a low energy antiproton beam transport line. The MUSASHI was capable of trapping and cooling more than 1Ă10^{7} antiprotons and extracting them as an ultraslow antiproton beam with energy of 150â250Â eV
Directed fluxes of positronium using pulsed travelling optical lattices
A new method of producing positronium beams is proposed using travelling optical lattices. It is shown that itis a potentially versatile method viable with current laser and positronium production technologies, and over a wide range (up to keV) of final kinetic energies