An observation of a clear dependence of antihydrogen production on positron plasma shapes is reported. For this purpose a plasma control method has been developed combining the plasma rotating-wall technique with a mode diagnostic system. With the help of real-time and nondestructive observations, the rotating-wall parameters have been optimized. The positron plasma can be manipulated into a wide range of shapes aspect ratio 6.5<=alfa<=80 and densities (1.5 10^8<=n<= 7 10^9 cm−3) within a short duration (25 s) compatible with the ATHENA antihydrogen production cycle.
Positron plasma control techniques for the production of cold antihydrogen
FONTANA, ANDREA;GENOVA, PABLO;MONTAGNA, PAOLO MARIA;ROTONDI, ALBERTO;
2007-01-01
Abstract
An observation of a clear dependence of antihydrogen production on positron plasma shapes is reported. For this purpose a plasma control method has been developed combining the plasma rotating-wall technique with a mode diagnostic system. With the help of real-time and nondestructive observations, the rotating-wall parameters have been optimized. The positron plasma can be manipulated into a wide range of shapes aspect ratio 6.5<=alfa<=80 and densities (1.5 10^8<=n<= 7 10^9 cm−3) within a short duration (25 s) compatible with the ATHENA antihydrogen production cycle.File in questo prodotto:
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