ASACUSA Status Report

ASACUSA progress during 2009 and plans for 201

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 (Ps−), 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 1×10^{7} antiprotons and extracting them as an ultraslow antiproton beam with energy of 150–250 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