A double supermirror monochromator for neutron instrumentation at LLB
Sylvain Desert (LLB), Vincent Thevenot (LLB), Andre Gabriel (LLB),, Patrice Permingeat (LLB), Julian Oberdisse (LLB, LCVN), Annie Brulet (LLB)
TL;DR
This paper presents a double supermirror monochromator designed for neutron instruments at LLB, reducing gamma radiation and providing continuous wavelength selection from 0.5 to 2 nm with high neutron transmission.
Contribution
It introduces a novel monochromator design that minimizes gamma radiation and offers adjustable wavelength selection for neutron experiments.
Findings
Gamma radiation reduced compared to conventional selectors
Neutron transmission exceeds 70%
Wavelength range of 0.5 to 2 nm achieved
Abstract
The design and characteristics of a double supermirror monochromator for neutron instrumentation at the Laboratoire Leon Brillouin is described. The aim of this monochromator is to reduce the intense gamma-radiation produced by conventional velocity selectors and to avoid a direct view of the guide while keeping a comparable neutron transmission (higher than 70%). The monochromator offers a continuous choice of wavelength selection in the range 0.5 to 2 nm.
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