Speaker
Description
The tuning and stabilization of long normal conducting radiofrequency cavities present specific challenges that are critical for the reliable operation of linear accelerators. When the cavity length exceeds the RF wavelength several times, small mechanical deformations, misallignement and thermal gradients can lead to significant detuning, acceleting field distortion and excitation of unwanted modes.
These effects are particularly relevant for structures such as Drift Tube Linacs and Radio Frequency Quadrupoles, which operate in the low-energy sections of linacs, where compliance of the design accelerating field profile and frequency stability are essential for efficient beam transport and acceleration: this requires careful stabilization strategies. In this contribution the experience with the DTL of the ESS linac, as well as from RFQs developed in the Anthem and SPES projects, will be presented.
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