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Beam-Loading Effect on Breakdown Rate in High-Gradient Accelerating Structures

Frank Tecker, Theodoros Argyropoulos, Nuria Catalán Lasheras, Roberto Corsini, Alberto Degiovanni, Davide Gamba, Jorge Giner Navarro, Alexej Grudiev, Gerard McMonagle, Jose Luis Navarro Quirante, Robin Rajamaki, Eugenio Senes (+9 others)
The Compact Linear Collider (CLIC) study for a future electron-positron collider with a center-of-mass energy up to 3 TeV aims for an accelerating gradient of 100 MV/m. The gradient is limited by RF breakdowns, and the luminosity requirements impose a limit on the admissible RF breakdown rate. RF testing of 12 GHz structure prototypes has shown that gradients in excess of 100 MV/m can be reached with the required breakdown rate. However at CLIC, the structures will be operated with significant
more » ... d with significant beam-loading, modifying the field distribution inside. The effect of the beam-loading must be well understood but has not been previously measured. The commissioning and operation of an experiment to measure the effect of beam-loading on breakdown rate and the measurement results are presented.
doi:10.18429/jacow-ipac2016-thpor031 fatcat:fjejorlx4begna7bhfzqq7lwuy