论文信息 - HIGHER ORDER MODES IN THE NEW 100 MHZ AND 500 MHZ CAVITIES AT MAXLAB

HIGHER ORDER MODES IN THE NEW 100 MHZ AND 500 MHZ CAVITIES AT MAXLAB

The MAX-II electron storage ring operates exclusively in multi-bunch mode with all buckets filled. Damping of the longitudinal coupled bunch (LCB) instabilities driven by the higher order modes (HOM) has successfully been provided by passive third harmonic 1.5 GHz cavities. With a new RF system employing three 100 MHz capacity loaded cavities and a fifth harmonic Landau cavity installed, a study of the HOM impedances, and related threshold instability currents, is necessary. Measurements and calculations so far, are being presented.

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