Experimental measurements of 99Tc and 129I transmutation in TARC at CERN

A short description of the set-up of the TARC experiment at CERN and the ARC principle is presented. This is followed by a very brief overview of the flux measurements and their comparison with the MC prediction. Then the method and specific set-up used for the integral transmutation of 99Tc and 129I measurements will be shown, indicating some of the actions taken to minimise systematic uncertainties. With this set-up the transmutation rate of 99Tc and 129I was measured in many positions around the lead block, corresponding to different neutron spectra and flux intensities. The experimental results and the excellent agreement with the MC predictions are discussed. Finally, the CeF3 measurements of the energy dependence of the neutron capture on 99Tc targets are explained. All these measurements confirm the ARC effect and its potentiality for LLFF transmutation. (author)