Dresden 2014 – wissenschaftliches Programm
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BE: Beschleunigerphysik
BE 11: Accelerator Physics Poster Session
BE 11.15: Poster
Mittwoch, 2. April 2014, 17:00–19:30, P4
HOM Couplers for CERN SPL Cavities — •Kai Papke1,2, Frank Gerigk1, and Ursula van Rienen2 — 1CERN — 2University of Rostock
The CERN SPL (Superconducting Proton Linac) is a R&D project with the focus on neutrino or radioactive beam facilities. The linac is composed of two types of cavities operating at 704.4 MHz in pulsed mode and with geometrical beta of 0.65 and 1. In order to limit beam induced Higher-Order-Modes (HOM) effects, CERN considers the use of HOM couplers on the cut-off tubes of the 5-cell superconducting cavities. We present the design process taking into account the RF characteristics, mechanical aspects, heat loss as well as multipacting sensitivity. A comparison is made between various design options for the medium and high-beta SPL cavities. Two options are presented, tested as warm prototypes on 5-cell high-beta copper cavity models.