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@ARTICLE{Pasini:187417,
author = {Pasini, S. and Monkenbusch, M.},
title = {{O}ptimized superconducting coils for a high-resolution
neutron spin-echo spectrometer at the {E}uropean
{S}pallation {S}ource},
journal = {Measurement science and technology},
volume = {26},
number = {3},
issn = {1361-6501},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2015-01086},
pages = {035501},
year = {2015},
abstract = {The ultimate energy resolution in inelastic thermal neutron
scattering spectroscopy is provided by neutron spin echo
(NSE) spectrometers. The characteristic of a NSE
spectrometer is that it detects neutron-velocity changes by
spin-coding. It measures the intermediate scattering
function I(Q, t) in terms of final beam polarisation. High
resolution in that case means the extension of the Fourier
time (t) range towards 1 µs. The most important technical
limitation to increase the resolution of NSE spectrometers
results from the need to equalize the field integrals that
determine the coding spin-precession angles along different
neutron paths by combining a suitable precession field with
correction coils. Here we report on the field shape
optimisation and design of precession magnetic coil
arrangements with minimal intrinsic field integral
inhomogeneity for a wide and diverging neutron beam with a
new semi-analytical approach and a numerical method. This
minimizes the amount of additionally required correction.
The solenoid configuration we found fulfils all the
conditions required by a real NSE spectrometer.},
cin = {ICS-1 / Neutronenstreuung ; JCNS-1},
ddc = {600},
cid = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106},
pnm = {6215 - Soft Matter, Health and Life Sciences (POF3-621) /
6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
/ 551 - Functional Macromolecules and Complexes (POF3-551)},
pid = {G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G4 /
G:(DE-HGF)POF3-551},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000349839400014},
doi = {10.1088/0957-0233/26/3/035501},
url = {https://juser.fz-juelich.de/record/187417},
}