MEDSI2020 - List of Keywords (radio-frequency)

Paper	Title	Other Keywords	Page
TUPB12	Assessment of the Corrosion of Copper Components in the Water Cooling System of ALBA Synchrotron Light Source; Presentation of a Proposal to Mitigate the Corrosion Rate of Copper	cavity, operation, controls, quadrupole	171
	M. Quispe, E. Ayas, J.J. Casas, C. Colldelram, Ll. Fuentes, J.C. Giraldo, J. Iglesias, M. Pont ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain J. Buxadera, M. Punset Technical University of Catalonia, The Biomaterials, Biomechanics and Tissue Engineering, Barcelona, Spain
	This paper presents the most recent results on the corrosion of copper components in ALBA water cooling system. The studies have been carried out using a variety of techniques: Scanning Electron Microscopy (SEM), Energy-Dispersive X-Ray Spectroscopy (EDS) and X-Ray Diffraction (XRD). Representative samples of the Accelerator Facility were examined: Storage Ring Absorbers, Front End Masks, Radio Frequency Cavity Pipes, Experimental Line Mask, Radio Frequency Plant Pipes at Service Area and Booster Quadrupole. The studies show the presence of intergranular, pitting and generalized corrosion. The presence of copper oxide is confirmed, as well as other elements such as Aluminum, Carbon, Sulfur, Silver, Calcium, Silicon, Titanium and Iron in some regions of the samples. Likewise, other elements from circulating water such as Potassium and Chlorine have also been detected. The depth of pitting corrosion is less than 119.4 um for the samples studied, after 10 years of operation. To minimize the corrosion problem, an upgrade of the ALBA cooling system is under study. The objective is to reduce the current corrosion rate by a conservative factor of 5. This change is possible by modifying the characteristics of the cooling water, reducing the dissolved oxygen content to values below 10 ppb and increasing the pH above 7.5. Technical aspects of this upgrade are discussed in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPB12
About •	paper received ※ 23 July 2021 paper accepted ※ 16 October 2021 issue date ※ 09 November 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

Assessment of the Corrosion of Copper Components in the Water Cooling System of ALBA Synchrotron Light Source; Presentation of a Proposal to Mitigate the Corrosion Rate of Copper

cavity, operation, controls, quadrupole

171

M. Quispe, E. Ayas, J.J. Casas, C. Colldelram, Ll. Fuentes, J.C. Giraldo, J. Iglesias, M. Pont
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
J. Buxadera, M. Punset
Technical University of Catalonia, The Biomaterials, Biomechanics and Tissue Engineering, Barcelona, Spain

This paper presents the most recent results on the corrosion of copper components in ALBA water cooling system. The studies have been carried out using a variety of techniques: Scanning Electron Microscopy (SEM), Energy-Dispersive X-Ray Spectroscopy (EDS) and X-Ray Diffraction (XRD). Representative samples of the Accelerator Facility were examined: Storage Ring Absorbers, Front End Masks, Radio Frequency Cavity Pipes, Experimental Line Mask, Radio Frequency Plant Pipes at Service Area and Booster Quadrupole. The studies show the presence of intergranular, pitting and generalized corrosion. The presence of copper oxide is confirmed, as well as other elements such as Aluminum, Carbon, Sulfur, Silver, Calcium, Silicon, Titanium and Iron in some regions of the samples. Likewise, other elements from circulating water such as Potassium and Chlorine have also been detected. The depth of pitting corrosion is less than 119.4 um for the samples studied, after 10 years of operation. To minimize the corrosion problem, an upgrade of the ALBA cooling system is under study. The objective is to reduce the current corrosion rate by a conservative factor of 5. This change is possible by modifying the characteristics of the cooling water, reducing the dissolved oxygen content to values below 10 ppb and increasing the pH above 7.5. Technical aspects of this upgrade are discussed in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUPB12

About •

paper received ※ 23 July 2021 paper accepted ※ 16 October 2021 issue date ※ 09 November 2021

Export •

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