Speaker
Dr
Volkhard Maeckel
(Austrian Academy of Sciences (AT))
Description
The ASACUSA CUSP collaboration at the Antiproton Decelerator (AD) of CERN aims at a precise measurement of the ground-state hyperfine splitting of antihydrogen, which promises to be one of the most sensitive tests of CPT symmetry. A dedicated mixing trap serves as a source for in-flight spectroscopy. While antiprotons are supplied from the AD, positrons from a $^{22}$Na source are slowed down by a neon rare-gas solid moderator and accumulated in a Surko-type buffer gas trap.
We will discuss methods for producing, trapping, accumulating, and conditioning positrons. New developments in positron temperature measurement and cooling will be shown, which are important for improving the mixing efficiency for ground-state antihydrogen.
Authors
Daniel James Murtagh
(Inst. of Physical and Chemical Research (JP))
Dr
Volkhard Maeckel
(Austrian Academy of Sciences (AT))
