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DEVELOPMENT OF THE POSITRON INJECTOR FOR LEPTA FACILITY |
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V. Bykovsky¹, I. Meshkov¹, V. Pavlov¹, R. Pivin¹, A. Rudakov¹, G. Trubnikov¹, S. Yakovenkoª¹, M.K. Eseev² ¹Joint Institute for Nuclear Research, Dubna, Russia ²Lomonosov Pomor State University, Arkhangelsk, Russia Abstract An injector of the low energy positrons for the accumulator LEPTA has being assembled at JINR. The injector is based on 22Na radioactive source. Positrons from the source are moderated in the solid neon. The cryogenic source of slow positrons has been tested with a isotope 22Na of the initial activity of 0.8 MBk. The continuous slow positron beam with average energy of 1.2 eV, width of a spectrum 1 eV has been obtained. The achieved moderator efficiency is about 1 %. The accumulation process in the positron trap was investigated with electron flux. The life time of the electrons in the trap, τlife≥80 s and capture efficiency ε~0.4 have been obtained. The maximum number of the accumulated particle was Nexper = 2∙108 at the initial flux of 5∙106 electrons per sec. ª – corresponding author |
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DYNAMIC POSITRONIC BUNCH IN SURKO TRAP OF LEPTA FACILITY |
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I.N. Meshkov¹, A.V. Smirnov¹, S.L. Yakovenko¹, M.K. Eseevª² ¹Joint Institute for Nuclear Research, Dubna, Russia ²Lomonosov Pomor State University, Arkhangelsk, Russia Abstract On base of solution of dynamic equations of motion is presented the explanation of effect of influence rotating wall electric field the positron bunch in Surko trap, being one of the elements of LEPTA faculty. ª – corresponding author |
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