Proton beam energy calibration of the 3 MV Tandetron™ at IFIN-HH

The ELIGANT-TN long neutron counter, the ELISSA silicon strip array and the Mini-eTPC active gas target detector all represent nuclear physics research tools constructed at Extreme Light Infrastructure - Nuclear Physics (ELI-NP) for use in γ-beam experiments. Currently, these three setups are used at the charged particle accelerators of the “Horia Hulubei” National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), for performing reaction cross-section measurements. Accurate knowledge of the incident beam energy is of paramount importance for such studies, which is why in the present article we report on a new proton beam energy calibration performed using the following threshold reactions: 7 Li( p,n ) 7 Be, 13 C( p,n ) 13 N and 51 V( p,n ) 51 Cr. The measurements were performed by varying the projectile energy across the key range of ∼ 1600–3200 keV. The results demonstrate a linear dependence of the projectile energy on the terminal voltage.