Author/Authors :
Shemyakin، نويسنده , , A. V. Burov، نويسنده , , A. and Carlson، نويسنده , , K. and Dudnikov، نويسنده , , V. and Kramper، نويسنده , , B. and Kroc، نويسنده , , T. and Leibfritz، نويسنده , , J. and McGee، نويسنده , , M. and Nagaitsev، نويسنده , , S. and Saewert، نويسنده , , G. and Schmidt، نويسنده , , C.W. and Warner، نويسنده , , A. and Seletskiy، نويسنده , , S. and Tupikov، نويسنده , , V.، نويسنده ,
Abstract :
To prepare a beam generation device for Fermilabʹs future Recycler Electron Cooling system, an experimental set-up with a simplified beam line has been commissioned at Fermilab. Stable operation was achieved at an electron energy of 3.5 MeV and a DC beam current of up to 0.5 A. The main reason for interruptions of the operation was found to be microsecond long bursts of the cathode current. While the frequency of the interruptions is determined primarily by a flow of secondary ions, the resulting reduction in the duty factor depends on the beam optics, the protection systems, and the tube electric field strength.
