Conditioning of the First Mass Production Power Couplers for the ESS Elliptical Cavities

Christian Arcambal (1) , Matthieu Baudrier (1) , Pierre Bosland (1) , Guillaume Devanz (1) , Thibault Hamelin (1) , Claude Marchand (1) , Gilles Monnereau (1) , Maryam Oublaid (1) , Gabrielle Perreu (1) , Sylvie Regnaud (1) , Christophe Servouin (1) , Claire Simon (1)

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

In the framework of the European Spallation Source (ESS), CEA Paris-Saclay is in charge of the delivery of 9 medium beta (β = 0.67) and 21 high beta (β = 0.86) cryomodules. Each cryomodule is composed of 4 cavities equipped with RF (Radio Frequency) power couplers (704.42 MHz, 1.1 MW maximum peak power, repetition rate=14 Hz, RF pulse width > 3.1 ms). Ten prototype power couplers have been manufactured to validate the design and the performance. Currently the mass production of the 120 couplers started and the six first pre-series medium beta couplers have been successfully conditioned. The achievement of this milestone allowed us to launch the production of the remaining 30 medium beta couplers. This paper presents the conditioning of the pre-series couplers.

Mots clés: vacuum; electron; pick-up; cavity; Windows

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

Christian Arcambal, Matthieu Baudrier, Pierre Bosland, Guillaume Devanz, Thibault Hamelin, et al.. Conditioning of the First Mass Production Power Couplers for the ESS Elliptical Cavities. 19th International Conference on RF Superconductivity (SRF 2019), Jun 2019, Dresden, Germany. pp.MOP086, ⟨10.18429/JACoW-SRF2019-MOP086⟩. ⟨hal-02497847⟩