Accelerator characterization of the new ion beam facility at MTA Atomki in Debrecen, Hungary

Abstract In this work we present the 2 MV Tandetron accelerator manufactured by High Voltage Engineering Europa (HVEE), that was installed at MTA Atomki in Debrecen, Hungary in 2015. Furthermore, we report on the first performance test of the whole facility including the calibration of the terminal voltage using accurately known resonance energies of the 27 Al(p, γ ) 28 Si and  13 C(p, γ ) 14 N reactions, as well as neutron threshold energies of the 7 Li(p,n) 7 Be and 13 C(p,n) 13 N reactions. The accurate energy calibration of the generating voltmeter (GVM), the good energy stability of the accelerator as well as the low energy spread of the ion beam suited the requirements of nuclear astrophysics, resonance PIGE depth profiling and the nanoprobe beamline. We have investigated whether the terminal voltage reading depends on the insulating gas pressure, and how much the stripper gas pressure modifies the beam energy.