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

Christine Darve , Christian Arcambal (1) , Pierre Bosland (1) , Sébastien Bousson (2) , Enrico Cenni (1) , Gabriele Costanza , Guillaume Devanz , Patxi Duthil (2) , Nuno Elias , Han Li , Gilles Olivier (2) , Guillaume Olry (2) , Franck Peauger (3) , Denis Reynet (2) , Roger Ruber , Rocio Santiago Kern , Felix Schlander

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 IPNO - Institut de Physique Nucléaire d'Orsay
3 CEA/DSM

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.

Mots clés: cavity; cryomodule; SRF; linac; proton

Domaines: Physique des accélérateurs [physics.acc-ph]

Christine Darve, Christian Arcambal, Pierre Bosland, Sébastien Bousson, Enrico Cenni, et al.. The Superconducting Radio-Frequency Linear Accelerator Components for the European Spallation Source: First Test Results. 28th International Linear Accelerator Conference, Sep 2016, East Lansing, United States. pp.WE1A03, ⟨10.18429/JACoW-LINAC2016-WE1A03⟩. ⟨hal-01645939⟩