ANNI - A pulsed cold neutron beam facility for particle physics at the ESS

Abstract

Pulsed beams have tremendous advantages for precision experiments with cold neutrons. In order to minimise and measure systematic effects, they are used at continuous sources in spite of the related substantial decrease in intensity. At the European Spallation Source ESS these experiments will profit from the pulse structure of the source and its 50 times higher peak brightness compared to the most intense reactor facilities, making novel concepts feasible. Therefore, the cold neutron beam facility for particle physics ANNI was proposed as part of the ESS instrument suite. The proposed design has been re-optimised to take into account the present ESS cold moderator layout. We present design considerations, the optimised instrument parameters and performance, and expected gain factors for several reference experiments.

arXiv comment8 pages, 4 figures; submitted to the Proceedings of the International Workshop on Particle Physics at Neutron Sources PPNS 2018, Grenoble, France, May 24-26, 2018

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Cited by in corpus (11)

• Beta decays as sensitive probes of lepton flavor universality
• The Fermi constant from muon decay versus electroweak fits and CKM unitarity
• New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the European Spallation Source
• Particle Physics at the European Spallation Source
• Precise Measurements of the Decay of Free Neutrons
• Nested mirror optics for neutron extraction, transport, and focusing
• Design of the Magnet System of the Neutron Decay Facility PERC
• The Pulsed Neutron Beam EDM Experiment
• The HIBEAM Instrument at the European Spallation Source
• NoMoS: An $R\times B$ Drift Momentum Spectrometer for Beta Decay Studies
• A Computing and Detector Simulation Framework for the HIBEAM/NNBAR Experimental Program at the ESS