Public Note / ACCDT / DR ILC-LNF Technical Note, ILC-LNF-004, October 17, 2011 ILC-NOTE-2011-060

Optimal Fixed Detuning of the Damping Ring Cavities for the ILC 10 Hz Operation

Gallo, A. (INFN-LNF)

Abstract: Recently a 10 Hz operation modality of ILC linac has been proposed to optimize the collider performances at energies lower than the nominal one. One of the main concern on the feasibility of the 10 Hz modality is represented by the operation of the superconducting cavities in rapidly changing beam loading conditions. The most straightforward solution is to operate the cavities tuned at a fixed optimal frequency, at the price of a certain amount of mismatch and inefficiency in the RF system. In this memo expressions for calculating the optimal values of cavity detuning and cavity input coupling are derived. In the last part of the report the damping ring RF system parameters are evaluated, using the relations derived in the previous paragraphs, to optimize all the proposed operating configurations.

The record appears in these collections:
Accelerator Design & Technology > ILC Beamline Areas > Damping Ring (DR)
Documentation > Publications & Notes > ILC Notes
Accelerator Design & Technology > ILC General


 Record created 2011-10-17, last modified 2011-10-21