Work

A total-energy spectrometer for ultracold neutrons

Year: 2026

Type: article

Abstract: In this work, we report on simulation studies of a proposed spectrometer for ultracold neutrons (UCN) that combines a compound parabolic concentrator (CPC) surface with an adjustable-height absorbing ceiling. Our results indicate that such a device, operated in a flow-through mode, can be used to efficiently measure the UCN total-energy spectrum. The spectrometer resolution Δ E is energy independent and scales with the radius a of the CPC opening: e.g., a = 3 cm corresponds to Δ E ≈ 1 neV .

Source: Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment

DOI: 10.1016/j.nima.2026.172053

Authors: Thomas Neulinger, Oliver Zimmer

Institutions: Technical University of Munich, Institut Laue-Langevin

Language: English

Topic: Atomic and Subatomic Physics Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,620

OpenAlex ID: W7211885807

FWCI:

Cites: 36

Cited by:

Related to: 10