Status of the X17 search in Montreal
Abstract
At the Montreal Tandem accelerator, an experiment is being set up to measure internal pair creation from the decay of nuclear excited states using a multiwire proportional chamber and scintillator bars surrounding it from the DAPHNE experiment. The acceptance covers a solid angle of nearly 4. Preamplifiers and the data acquisition hardware have been designed and tested. The water-cooled LiF target, mounted on an Al foil is in a thin carbon fiber section of the beamline. The experiment will focus at first on a measurement of the internal pair creation from the 18.15 MeV state of Be. Assuming the ATOMKI evaluation of the electron-pair production rate from X17, a Geant4 simulation predicts observation of a clear signal after about two weeks of data taking with a 2 A proton beam. The IPC measurement could eventually be extended to the giant dipole resonance of Be, as well as to other nuclei, in particular to B.
Keywords
Cite
@article{arxiv.2211.11900,
title = {Status of the X17 search in Montreal},
author = {G. Azuelos and B. Broerman and D. Bryman and W. C. Chen and H. N. da Luz and L. Doria and A. Gupta and L-A. Hamel and M. Laurin and K. Leach and G. Lefebvre and J-P. Martin and A. Robinson and N. Starinski and R. Sykora and D. Tiwari and U. Wichoski and V. Zacek},
journal= {arXiv preprint arXiv:2211.11900},
year = {2022}
}
Comments
5 pages, 4 figures, Proceedings contribution, TRIUMF Ariel Workshop, May 25-27 2022