Author/Authors :
Steyn، نويسنده , , G.F. and Vermeulen، نويسنده , , C. P. Botha، نويسنده , , A.H. and Conradie، نويسنده , , J.L. and Crafford، نويسنده , , J.P.A. and Delsink، نويسنده , , J.L.G. and Dietrich، نويسنده , , J. L. du Plessis، نويسنده , , H. and Fourie، نويسنده , , D.T. and Kormلny، نويسنده , , Z. and van Niekerk، نويسنده , , M.J. and Rohwer، نويسنده , , P.F. and Stodart، نويسنده , , N.P. and de Villiers، نويسنده , , J.G.، نويسنده ,
Abstract :
A vertical-beam target station (VBTS) is described to exploit the high-intensity proton beams delivered by the upgraded separated-sector cyclotron of iThemba LABS for the production of longer-lived, high value radionuclides such as 22Na, 68Ge and 82Sr. Aspects of the targetry are discussed as well as a beam splitter, which makes it possible to perform radionuclide production bombardments simultaneously in two irradiation vaults. With tandem targets in two stations, four targets can be bombarded simultaneously. The delivery of 66 MeV proton beams of higher intensity has been realized by installing fixed frequency, flat-top RF resonators on both the main cyclotron and an injector cyclotron. The increase in beam intensity also required new non-destructive diagnostic components in the relevant high-energy beamlines. An overview is given of the current radionuclide production target stations, their similarities and differences and the role of the VBTS in the production programme.
Keywords :
66 , Radionuclide production , MeV protons , Vertical beams , Target stations , High-power targetry
