The ¹⁴N(p,gamma )¹⁵O reaction studied at high energy

The ¹⁴N(p,gamma)¹⁵O reaction is the bottleneck of the carbon-nitrogen-oxygen (CNO) cycle. Recent studies of this reaction have been performed in the low energy range E < 500 keV. However, also data at higher energy are necessary to extrapolate the S-factor down to the energy range of astrophysical interest. Up to now, only one set of data froman experiment performed in 1987 extends up to 2.5MeV. A new study has been carried out at the high-current FZD Tandetron in Dresden, in the energy region from 0.6 to 2.5MeV. The astrophysics motivations, setup and on-going analysis are presented.