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LEPTA project Measuring lifetime of positrons Laboratory of nuclear problems Supervisor: S.Yakovenko JINR, Dubna. Goals of the LEPTA project. Dynamics of coupling motion in the stellatron Electron cooling of positrons Positronium generation in flight Positronium physics
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LEPTA project Measuring lifetime of positrons Laboratory of nuclear problems Supervisor: S.Yakovenko JINR, Dubna
Goals of the LEPTA project • Dynamics of coupling motion in the stellatron • Electron cooling of positrons • Positronium generation in flight • Positronium physics • Electron cooling with circulating electron beam • Feasibility study ofantihydrogen generation inflight
Design of the LEPTA kicker collector septum 106100sec=108 e+ e-gun cooling section positron trap 22Na106 e+ per sec 104 Ps per sec positronium detector
Beam diagnostic tools and correction coils disposition kicker Vertical PU Vertical PU Electron gun Helical quadrupole Horizontal PU L D D = 79 mm, L = 126 mm
10 µs Beam lifetime signal from PU Our results: Lifetime: 5,787037 ms “Killer” pulse was applied to the kicker plate