Antiproton, positron, and electron imaging with a microchannel plate/phosphor detector

Andresen, G. B.; Bertsche, W.; Bowe, P. D.; Bray, C. C.; Butler, E.; Cesar, C. L.; Chapman, S.; Charlton, M.; Fajans, J.; Fujiwara, M. C.; Gill, D. R.; Hangst, J. S.; Hardy, W. N.; Hayano, R. S.; Hayden, M. E.; Humphries, A. J.; Hydomako, R.; Jørgensen, L. V.; Kerrigan, S. J.; Kurchaninov, L.
December 2009
Review of Scientific Instruments;Dec2009, Vol. 80 Issue 12, p123701
Academic Journal
A microchannel plate (MCP)/phosphor screen assembly has been used to destructively measure the radial profile of cold, confined antiprotons, electrons, and positrons in the ALPHA experiment, with the goal of using these trapped particles for antihydrogen creation and confinement. The response of the MCP to low energy (10–200 eV, <1 eV spread) antiproton extractions is compared to that of electrons and positrons.


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