MEDSI2016 - List of Authors (Brajuskovic, B.)

Paper	Title	Page
MOTB02	Finite Element Analysis in Design of Synchrotron Instrumentation - Issues, Good Practices and New Horizons
	B. Brajuskovic ANL, Argonne, Illinois, USA
	Finite Element Analysis(FEA) is a design tool widely implemented in the design of synchrotron instrumentation to predict behavior of a particular design under the assumed real life conditions. Although FEA is a very popular and trusted design tool in use for several decades, it is of paramount importance to emphasize that it is only as accurate as the user’s input into the analysis and the interpretation of the results. In its introduction the tutorial will cover the importance of accurate inputs into the analysis and correct interpretation of the results as well as the best practices in how to improve said accuracies. Second part will cover the nature of the phenomena analyzed with thermal and structural simulations with the emphasis on the seemingly paradoxical fact that thermally loaded structures frequently fail only upon load removal. The third part will cover thermal and structural simulations with several examples. The tutorial will be concluded with alternate applications of FEA in the design of synchrotron instrumentation. Examples of multi-physic and vibration analysis, component weight optimization, and the analysis of the acoustic levitation supports will be presented.
	Slides MOTB02 [9.854 MB]
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TUPE25	Metallurgical Evaluation of Dissimilar Metal Joints for Accelerator Vacuum Chamber Construction at the Advanced Photon Source Upgrade Project	220
	G. Navrotski, B. Brajuskovic ANL, Argonne, Illinois, USA
	Funding: Funding provided by the Advanced Photon Source, U.S. Department of Energy, Office of Science, Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Tubular vacuum chamber assemblies made of aluminum, copper and stainless steel alloys will be used in the new Multi Bend Achromat (MBA) storage ring that is being developed at Advanced Photon Source (APS). Details of the new lattice magnet system design and ring impedance considerations continue to drive these vacuum chambers to smaller dimensions and thinner walls with tighter geometric tolerances under higher thermal loads. It is important to carefully evaluate the methods used to join these dissimilar metal components looking for compromise in primary strength, permeability, electrical and thermal properties while still creating structures that are ultra-high vacuum compatible and leak-tight. This paper visually details the underlying metallurgical changes that occur when joining various combinations of aluminum, OFE copper, GlidCop® and stainless steel using brazing, bonding and welding techniques. Each of the techniques has its advantages and disadvantages with engineering and economic consequences.
	Poster TUPE25 [2.312 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE25
About •	paper received ※ 07 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MOTB02

Finite Element Analysis in Design of Synchrotron Instrumentation - Issues, Good Practices and New Horizons

B. Brajuskovic
ANL, Argonne, Illinois, USA

Finite Element Analysis(FEA) is a design tool widely implemented in the design of synchrotron instrumentation to predict behavior of a particular design under the assumed real life conditions. Although FEA is a very popular and trusted design tool in use for several decades, it is of paramount importance to emphasize that it is only as accurate as the user’s input into the analysis and the interpretation of the results. In its introduction the tutorial will cover the importance of accurate inputs into the analysis and correct interpretation of the results as well as the best practices in how to improve said accuracies. Second part will cover the nature of the phenomena analyzed with thermal and structural simulations with the emphasis on the seemingly paradoxical fact that thermally loaded structures frequently fail only upon load removal. The third part will cover thermal and structural simulations with several examples. The tutorial will be concluded with alternate applications of FEA in the design of synchrotron instrumentation. Examples of multi-physic and vibration analysis, component weight optimization, and the analysis of the acoustic levitation supports will be presented.

Slides MOTB02 [9.854 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPE25

Metallurgical Evaluation of Dissimilar Metal Joints for Accelerator Vacuum Chamber Construction at the Advanced Photon Source Upgrade Project

220

G. Navrotski, B. Brajuskovic
ANL, Argonne, Illinois, USA

Funding: Funding provided by the Advanced Photon Source, U.S. Department of Energy, Office of Science, Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
Tubular vacuum chamber assemblies made of aluminum, copper and stainless steel alloys will be used in the new Multi Bend Achromat (MBA) storage ring that is being developed at Advanced Photon Source (APS). Details of the new lattice magnet system design and ring impedance considerations continue to drive these vacuum chambers to smaller dimensions and thinner walls with tighter geometric tolerances under higher thermal loads. It is important to carefully evaluate the methods used to join these dissimilar metal components looking for compromise in primary strength, permeability, electrical and thermal properties while still creating structures that are ultra-high vacuum compatible and leak-tight. This paper visually details the underlying metallurgical changes that occur when joining various combinations of aluminum, OFE copper, GlidCop® and stainless steel using brazing, bonding and welding techniques. Each of the techniques has its advantages and disadvantages with engineering and economic consequences.

Poster TUPE25 [2.312 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE25

About •

paper received ※ 07 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)