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

W. H. Kraan; V. N. Zabenkin; L. A. Axelrod; Yu. O. Chetverikov; S. V. Grigoriev; E. G. Yashina; A. A. Sumbatyan

doi:10.1134/S1027451017060131

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

Autores: Kraan W.H.¹, Zabenkin V.N.², Axelrod L.A.², Chetverikov Y.O.², Grigoriev S.V.², Yashina E.G.², Sumbatyan A.A.²
Afiliações:
1. Interfaculty Reactor Institute
2. Petersburg Nuclear Physics Institute of National Research Centre “Kurchatov Institute”
Edição: Volume 11, Nº 6 (2017)
Páginas: 1281-1288
Seção: Article
URL: https://journals.rcsi.science/1027-4510/article/view/194566
DOI: https://doi.org/10.1134/S1027451017060131
ID: 194566

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Resumo

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 “gribbon beam” of height 2 cm is calculated as a function of λ. For λ = 6 Å, flippers 56 cm apart and RF frequency 1 MHz we find spin-echo length δ = 0.9 δm. We show numerically, how λ is converted to δ. Extension to δ = 20 δm is realistic.

Palavras-chave

Larmor precession, SESANS setup, adiabatic/RF flippers

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