IBIC2015 - List of Authors (Nosych, A.A.)

Paper	Title	Page
TUPB047	Electrostatic Finite-element Code to Study Geometrical Nonlinear Effects of BPMs in 2D	418
	A.A. Nosych, U. Iriso ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain J. Olle UAB, Barcelona, Spain
	We have developed a 2D finite element-based software for Matlab to study non-resonant effects in BPMs of arbitrary geometry, in particular the geometric nonlinearities. The developed code called BpmLab utilizes an open-source tetrahedral mesh generator DistMesh, combined with a short implementation of FEM with linear basis functions to find the electrostatic field distribution for boundary electric potential excitation. The BPM response as a function of beam position is calculated in a single simulation for all beam positions using the potential ratios, according to the Green's reciprocity theorem. The code offers ways to correct the geometrical nonlinear distortion, either by polynomials or by direct inversion of the electrode signals through numerical optimization. This work is an overview of the BpmLab capabilities to date, including its extensive benchmarking and validation against other methods
	Poster TUPB047 [8.291 MB]
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TUPB048	Measurements and Calibration of the Stripline BPM for the ELI-NP facility with the Stretched Wire Method	423
	A.A. Nosych, C. Colldelram, A. Crisol, U. Iriso, A. Olmos ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain F. Cioeta, A. Falone, A. Ghigo, M. Serio, A. Stella INFN/LNF, Frascati (Roma), Italy A. Mostacci Rome University La Sapienza, Roma, Italy
	A methodology has been developed to perform electrical characterization of the stripline BPMs for the future Gamma Beam System of ELI Nuclear Physics facility in Romania. Several prototype units are extensively benchmarked and the results are presented in this paper. The BPM sensitivity function is determined using a uniquely designed motorized test bench with a stretched wire to measure the BPM response map. Here, the BPM feedthroughs are connected to Libera Brilliance electronics and the wire is fed by continuous wave signal, while the two software-controlled motors provide horizontal and vertical motion of the BPM around the wire. The electrical offset is obtained using S-parameter measurements with a Network Analyzer (via the "Lambertso" method) and is referenced to the mechanical offset.
	Poster TUPB048 [4.978 MB]
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Paper

Title

Page

Electrostatic Finite-element Code to Study Geometrical Nonlinear Effects of BPMs in 2D

418

A.A. Nosych, U. Iriso
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
J. Olle
UAB, Barcelona, Spain

We have developed a 2D finite element-based software for Matlab to study non-resonant effects in BPMs of arbitrary geometry, in particular the geometric nonlinearities. The developed code called BpmLab utilizes an open-source tetrahedral mesh generator DistMesh, combined with a short implementation of FEM with linear basis functions to find the electrostatic field distribution for boundary electric potential excitation. The BPM response as a function of beam position is calculated in a single simulation for all beam positions using the potential ratios, according to the Green's reciprocity theorem. The code offers ways to correct the geometrical nonlinear distortion, either by polynomials or by direct inversion of the electrode signals through numerical optimization. This work is an overview of the BpmLab capabilities to date, including its extensive benchmarking and validation against other methods

Poster TUPB047 [8.291 MB]

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)

TUPB048

Measurements and Calibration of the Stripline BPM for the ELI-NP facility with the Stretched Wire Method

423

A.A. Nosych, C. Colldelram, A. Crisol, U. Iriso, A. Olmos
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
F. Cioeta, A. Falone, A. Ghigo, M. Serio, A. Stella
INFN/LNF, Frascati (Roma), Italy
A. Mostacci
Rome University La Sapienza, Roma, Italy

A methodology has been developed to perform electrical characterization of the stripline BPMs for the future Gamma Beam System of ELI Nuclear Physics facility in Romania. Several prototype units are extensively benchmarked and the results are presented in this paper. The BPM sensitivity function is determined using a uniquely designed motorized test bench with a stretched wire to measure the BPM response map. Here, the BPM feedthroughs are connected to Libera Brilliance electronics and the wire is fed by continuous wave signal, while the two software-controlled motors provide horizontal and vertical motion of the BPM around the wire. The electrical offset is obtained using S-parameter measurements with a Network Analyzer (via the "Lambertso" method) and is referenced to the mechanical offset.

Poster TUPB048 [4.978 MB]

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)