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

Wicher Kraan; V.N. Zabenkin; LA Axelrod; Yu.O. Chetverikov; SV Grigoriev; E.G. Yashina; A.A. Sumbatyan

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

Wicher Kraan, V.N. Zabenkin, LA Axelrod, Yu.O. Chetverikov, SV Grigoriev, E.G. Yashina, A.A. Sumbatyan

RST/Neutron and Positron Methods in Materials

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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.

Original language	English
Article number	11
Pages (from-to)	1281-1288
Number of pages	8
Journal	Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques
Volume	11
Issue number	6
Publication status	Published - 2017

Keywords

Larmor precession
SESANS setup
adiabatic/RF flippers

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19122017 kraan

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title = "Algorithm of the Computer Modelling and a SESANS Setup with Adiabatic RF-Flippers",

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.",

keywords = "Larmor precession, SESANS setup, adiabatic/RF flippers",

author = "Wicher Kraan and V.N. Zabenkin and LA Axelrod and Yu.O. Chetverikov and SV Grigoriev and E.G. Yashina and A.A. Sumbatyan",

year = "2017",

language = "English",

volume = "11",

pages = "1281--1288",

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T1 - Algorithm of the Computer Modelling and a SESANS Setup with Adiabatic RF-Flippers

AU - Kraan, Wicher

AU - Zabenkin, V.N.

AU - Axelrod, LA

AU - Chetverikov, Yu.O.

AU - Grigoriev, SV

AU - Yashina, E.G.

AU - Sumbatyan, A.A.

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - Larmor precession

KW - SESANS setup

KW - adiabatic/RF flippers

M3 - Article

SN - 1027-4510

VL - 11

SP - 1281

EP - 1288

JO - Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques

JF - Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques

IS - 6

M1 - 11

ER -

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

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Keywords

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