FANM: A software for focus and aberrations of nuclear microprobe.
aberration
beam optics
nuclear microprobe
software
Journal
Ultramicroscopy
ISSN: 1879-2723
Titre abrégé: Ultramicroscopy
Pays: Netherlands
ID NLM: 7513702
Informations de publication
Date de publication:
01 2021
01 2021
Historique:
received:
12
04
2020
revised:
26
10
2020
accepted:
01
11
2020
pubmed:
13
11
2020
medline:
13
11
2020
entrez:
12
11
2020
Statut:
ppublish
Résumé
Focus and Aberrations of Nuclear Microprobe (FANM) is a new beam optics package to achieve fast and accurate design of a nuclear microprobe. FANM achieves a balance between speed of focusing and accuracy of high order aberrations. A combined method proposed in FANM is to achieve focusing conditions using a matrix method and to calculate aberration coefficients using a numerical ray tracing method. FANM has two optional optimization algorithms (derivative-free method and particle swarm optimization), offering a powerful choice for multi-variable optimization. Numeric variables in FANM are stored as 64-bit (8-byte) double-precision floating-point values to reduce calculation errors. Results obtained with FANM are compared with six existing computational tools (PRAM, TRANSPORT-PSI, TRANSPORT-PBO, WinTRAX, GEANT4-nanobeam and Zgoubi). The reasons for discrepancies between the different packages are discussed. Calculated currents of magnetic quadrupole lenses obtained with FANM are compared with experimental values of a nuclear microprobe in the National University of Singapore.
Identifiants
pubmed: 33181364
pii: S0304-3991(20)30306-5
doi: 10.1016/j.ultramic.2020.113163
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
113163Informations de copyright
Copyright © 2020. Published by Elsevier B.V.