LINAC2016 - List of Authors (Darve, C.)

Paper	Title	Page
TUP106006	Vertical Test Results on ESS Medium Beta Elliptical Cavity Prototype	631
	E. Cenni CEA/IRFU, Gif-sur-Yvette, France S. Berry, P. Bosland, F. Éozénou, L. Maurice, J. Plouin, C. Servouin CEA/DSM/IRFU, France G. Costanza Lund University, Lund, Sweden C. Darve ESS, Lund, Sweden G. Devanz, X. Hanus, F. Peauger, D. Roudier CEA/DRF/IRFU, Gif-sur-Yvette, France
	The ESS elliptical superconducting Linac consists of two types of 704.42 MHz cavities, medium and high beta, to accelerate the beam from 216 MeV (spoke cavity Linac) up to the final energy at 2 GeV. The last Linac optimization, called Optimus+ [1], has been carried out taking into account the limitations of SRF cavity performance (field emission). The medium and high-beta parts of the Linac are composed of 36 and 84 elliptical cavities, with geometrical beta values of 0.67 and 0.86 respectively. This work presents the latest vertical test results on ESS medium beta elliptical cavity prototypes. We describe the cavity preparation procedure from buffer chemical polishing to vertical test. Finally magnetic probes (Fluxgate) were installed on the cavity to determine magnetic field background during vertical test. The latest vertical test results showed that our cavity design performance are beyond requirements.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUP106006
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WE1A03	The Superconducting Radio-Frequency Linear Accelerator Components for the European Spallation Source: First Test Results	651
	C. Darve, N. Elias, F. Schlander ESS, Lund, Sweden C. Arcambal, P. Bosland, E. Cenni, G. Devanz CEA/IRFU, Gif-sur-Yvette, France S. Bousson, P. Duthil, G. Olivier, G. Olry, D. Reynet IPN, Orsay, France G. Costanza Lund University, Lund, Sweden H. Li, R.J.M.Y. Ruber, R. Santiago Kern Uppsala University, Uppsala, Sweden F. Peauger CEA/DSM/IRFU, France
	The European Spallation Source requires a pulsed Linac with an average beam power on the target of 5MW which is about five times higher than the most powerful spallation source in operation today. Over 97% of the acceleration occurs in superconducting cavities. ESS will be the first accelerator to employ double spoke cavities to accelerate beam. Accelerating gradients of 9MV/meter is required in the spoke section. The spoke section will be followed by 36 elliptical 704 MHz cavities with a geometrical beta of 0.67 and elliptical 704 MHz cavities with a geometrical beta of 0.86. Accelerating gradients of 20MV/m is required in the elliptical section. Initial gradient test results will be presented in which results exceed expected requirements.
	Slides WE1A03 [6.533 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-WE1A03
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Vertical Test Results on ESS Medium Beta Elliptical Cavity Prototype

631

E. Cenni
CEA/IRFU, Gif-sur-Yvette, France
S. Berry, P. Bosland, F. Éozénou, L. Maurice, J. Plouin, C. Servouin
CEA/DSM/IRFU, France
G. Costanza
Lund University, Lund, Sweden
C. Darve
ESS, Lund, Sweden
G. Devanz, X. Hanus, F. Peauger, D. Roudier
CEA/DRF/IRFU, Gif-sur-Yvette, France

The ESS elliptical superconducting Linac consists of two types of 704.42 MHz cavities, medium and high beta, to accelerate the beam from 216 MeV (spoke cavity Linac) up to the final energy at 2 GeV. The last Linac optimization, called Optimus+ [1], has been carried out taking into account the limitations of SRF cavity performance (field emission). The medium and high-beta parts of the Linac are composed of 36 and 84 elliptical cavities, with geometrical beta values of 0.67 and 0.86 respectively. This work presents the latest vertical test results on ESS medium beta elliptical cavity prototypes. We describe the cavity preparation procedure from buffer chemical polishing to vertical test. Finally magnetic probes (Fluxgate) were installed on the cavity to determine magnetic field background during vertical test. The latest vertical test results showed that our cavity design performance are beyond requirements.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-TUP106006

Export •

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

WE1A03

The Superconducting Radio-Frequency Linear Accelerator Components for the European Spallation Source: First Test Results

651

C. Darve, N. Elias, F. Schlander
ESS, Lund, Sweden
C. Arcambal, P. Bosland, E. Cenni, G. Devanz
CEA/IRFU, Gif-sur-Yvette, France
S. Bousson, P. Duthil, G. Olivier, G. Olry, D. Reynet
IPN, Orsay, France
G. Costanza
Lund University, Lund, Sweden
H. Li, R.J.M.Y. Ruber, R. Santiago Kern
Uppsala University, Uppsala, Sweden
F. Peauger
CEA/DSM/IRFU, France

The European Spallation Source requires a pulsed Linac with an average beam power on the target of 5MW which is about five times higher than the most powerful spallation source in operation today. Over 97% of the acceleration occurs in superconducting cavities. ESS will be the first accelerator to employ double spoke cavities to accelerate beam. Accelerating gradients of 9MV/meter is required in the spoke section. The spoke section will be followed by 36 elliptical 704 MHz cavities with a geometrical beta of 0.67 and elliptical 704 MHz cavities with a geometrical beta of 0.86. Accelerating gradients of 20MV/m is required in the elliptical section. Initial gradient test results will be presented in which results exceed expected requirements.

Slides WE1A03 [6.533 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-WE1A03

Export •

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