The new neutron decay spectrometer Perkeo III

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 611; no. 2-3; pp. 216 - 218
• Main Authors: Märkisch, B., Abele, H., Dubbers, D., Friedl, F., Kaplan, A., Mest, H., Schumann, M., Soldner, T., Wilkin, D.
• Format: Journal Article
• Language: English
• Published: 01-12-2009
• Subjects: Accelerators; Neutron beams; Neutron decay; Nuclear engineering; Spectrometers; Statistics; Systematic errors
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2009.07.066

We present the new large neutron decay spectrometer Perkeo III designed to study neutron beta -decay in-beam. It offers largely improved statistics over its predecessor Perkeo II. When used with a pulsed neutron beam, leading sources of systematic errors in other experiments are strongly suppressed or eliminated. The instrument was commissioned in a first run at the high flux reactor of the Institut Laue-Langevin, Grenoble. With a continuous polarized neutron beam, a neutron decay rate of [inline image][inline image] was obtained.