Algorithm of the Computer Modelling and a SESANS Setup with Adiabatic RF-Flippers

Journal article (2017)

Authors

W.H. Kraan RST/Neutron and Positron Methods in Materials - AS
V. N. Zabenkin Petersburg Nuclear Physics Institute (PNPI)
LA Axelrod Petersburg Nuclear Physics Institute (PNPI)
Yu.O. Chetverikov Petersburg Nuclear Physics Institute (PNPI)
SV Grigoriev Petersburg Nuclear Physics Institute (PNPI)
E. G. Yashina Petersburg Nuclear Physics Institute (PNPI)
A.A. Sumbatyan Petersburg Nuclear Physics Institute (PNPI)
Research Group
RST/Neutron and Positron Methods in Materials (AS) (TU Delft)
Copyright: © 2017 W.H. Kraan, V.N. Zabenkin, LA Axelrod, Yu.O. Chetverikov, SV Grigoriev, E.G. Yashina, A.A. Sumbatyan
Larmor precession SESANS setup Adiabatic/RF flippers
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Published Date

2017

Language

English

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Neutron and Positron Methods in Materials

Abstract

We made software to simulate Larmor precession in a setup for SESANS with adiabatic/RF flippers in magnets, existing at PNPI. The final polarisation of a divergent “ribbon beam” of height 2 cm is calculated as a function of λ. For λ= 6 A, flippers 56 cm apart and RF frequency 1 MHz we find spin-echo length δ= 0.9 μm. We show numerically, how λ is converted to δ. Extension to δ= 20 μm is realistic.

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