New source for ultracold neutrons at the Institut Laue-Langevin

Abstract

A new intense superthermal source for ultracold neutrons (UCN) has been installed at a dedicated beam line at the Institut Laue-Langevin. Incident neutrons with a wavelength of 0.89 nm are converted to UCN in a five liter volume filled with superfluid ${}^4$He at a temperature of about 0.7 K. The UCN can be extracted to room temperature experiments. We present the cryogenic setup of the source, a characterization of the cold neutron beam, and UCN production measurements, where a UCN density in the production volume of at least 55 per cm${}^3$ was determined.

References in corpus (10)

• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• Low Energy Precision Test of Supersymmetry
• Neutron lifetime measurements using gravitationally trapped ultracold neutrons
• A New Constraint for the Coupling of Axion-like particles to Matter via Ultra-Cold Neutron Gravitational Experiments
• Experimental search for neutron - mirror neutron oscillations using storage of ultracold neutrons
• Precision Measurement of the Neutron Beta-Decay Asymmetry
• A direct experimental limit on neutron -- mirror neutron oscillations
• Test of Lorentz invariance with spin precession of ultracold neutrons
• Plans for a Neutron EDM Experiment at SNS
• New constraints on Lorentz invariance violation from the neutron electric dipole moment

Cited by in corpus (4)

• Optimizing neutron moderators for a spallation-driven ultracold-neutron source at TRIUMF
• Upgrade of the ultracold neutron source at the pulsed reactor TRIGA Mainz
• Status of the GRANIT facility
• High-power closed-cycle ${}^4$He cryostat with top-loading sample exchange