MEDSI2016 - List of Authors (Ewald, F.)

Paper	Title	Page
TUPE27	A New Generation of X-ray Absorbers for the EBS Storage Ring
	E. Gagliardini, J.C. Biasci, D. Coulon, Y. Dabin, T. Ducoing, F. Ewald, P. Marion, F. Thomas ESRF, Grenoble, France
	The X-ray absorbers are essential components of the storage ring vacuum system. Their function is to protect the vacuum chambers from the high power density produced by the dipole magnets synchrotron radiation. In the EBS storage ring, the 430 kW total heatload will be stopped by 400 individual absorbers of twelve different types. In order to simplify their design and reduce their costs, a new material will be used (CuCr1Zr) associated with a novel design integrating the vacuum sealing flange in the CuCr1 absorber body and avoiding any brazed or welded junctions. This alloy, used for other applications (ITER-Fusion for Energy), offers an alternative to Glidcop with a very good compromise between thermal and mechanical characteristics. The exact location of each absorber is established through precise ray-tracing studies, which define the best place between the optical elements. The design of the absorbers will be described including technological aspects, together with the investigations on the CuCr1Zr material, the prototypes and tests carried out to validate the novel design choices.
	Poster TUPE27 [12.575 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEAA02	X-Ray Absorber Design and Calculations for the EBS Storage Ring	257
	F. Thomas, J.C. Biasci, D. Coulon, Y. Dabin, T. Ducoing, F. Ewald, E. Gagliardini, P. Marion ESRF, Grenoble, France F. Thomas ILL, Grenoble, France
	The Extremely Brilliant Source (EBS) of the ESRF will hold new type of X-Ray absorbers: a new material will be used (CuCr1Zr suggested by ) together with a novel design integrating: - CF flange are machined in the absorber body. No weld, no braze. - Optimized toothed surface profile, reducing the induced thermal stresses. - Compton and Rayleigh scattering integrated blocking shapes. - Concentric cooling channels. A brief overview of the new design and concepts will be given. The presentation will then focus on thermo-mechanical absorber ANSYS calculations, combining both Computational Fluid Mechanics (CFD). The calculations and the calculation process will be discussed as well as the design criteria chosen by the team. The CFD calculations will show that an heat transfer coefficient between the water and the copper part can be estimated as well as the pressure drop through the absorber. Finally, the stress analysis will be emphasized. The type of stresses (tensile, compressive or shear) and their nature (primary or secondary) will be linked to the choice of design criteria. S. Sharma, "A Novel Design of High Power Masks and Slits", Proc. of MEDSI2014, Australia (2014).
	Slides WEAA02 [1.968 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEAA02
About •	paper received ※ 11 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

TUPE27

A New Generation of X-ray Absorbers for the EBS Storage Ring

E. Gagliardini, J.C. Biasci, D. Coulon, Y. Dabin, T. Ducoing, F. Ewald, P. Marion, F. Thomas
ESRF, Grenoble, France

The X-ray absorbers are essential components of the storage ring vacuum system. Their function is to protect the vacuum chambers from the high power density produced by the dipole magnets synchrotron radiation. In the EBS storage ring, the 430 kW total heatload will be stopped by 400 individual absorbers of twelve different types. In order to simplify their design and reduce their costs, a new material will be used (CuCr1Zr) associated with a novel design integrating the vacuum sealing flange in the CuCr1 absorber body and avoiding any brazed or welded junctions. This alloy, used for other applications (ITER-Fusion for Energy), offers an alternative to Glidcop with a very good compromise between thermal and mechanical characteristics. The exact location of each absorber is established through precise ray-tracing studies, which define the best place between the optical elements. The design of the absorbers will be described including technological aspects, together with the investigations on the CuCr1Zr material, the prototypes and tests carried out to validate the novel design choices.

Poster TUPE27 [12.575 MB]

Export •

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

WEAA02

X-Ray Absorber Design and Calculations for the EBS Storage Ring

257

F. Thomas, J.C. Biasci, D. Coulon, Y. Dabin, T. Ducoing, F. Ewald, E. Gagliardini, P. Marion
ESRF, Grenoble, France
F. Thomas
ILL, Grenoble, France

The Extremely Brilliant Source (EBS) of the ESRF will hold new type of X-Ray absorbers: a new material will be used (CuCr1Zr suggested by *) together with a novel design integrating: - CF flange are machined in the absorber body. No weld, no braze. - Optimized toothed surface profile, reducing the induced thermal stresses. - Compton and Rayleigh scattering integrated blocking shapes. - Concentric cooling channels. A brief overview of the new design and concepts will be given. The presentation will then focus on thermo-mechanical absorber ANSYS calculations, combining both Computational Fluid Mechanics (CFD). The calculations and the calculation process will be discussed as well as the design criteria chosen by the team. The CFD calculations will show that an heat transfer coefficient between the water and the copper part can be estimated as well as the pressure drop through the absorber. Finally, the stress analysis will be emphasized. The type of stresses (tensile, compressive or shear) and their nature (primary or secondary) will be linked to the choice of design criteria.
* S. Sharma, "A Novel Design of High Power Masks and Slits", Proc. of MEDSI2014, Australia (2014).

Slides WEAA02 [1.968 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEAA02

About •

paper received ※ 11 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017

Export •

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