Linear Accelerator Conference LINAC2010 - List of Authors (Khan, V.F.)

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Khan, V.F.

Paper	Title	Page
MOP002	A High Phase Advance Damped and Detuned Structure for the Main Linacs of CLIC	49
	R.M. Jones, A. D'Elia, V.F. Khan UMAN, Manchester A. Grudiev, W. Wuensch, R. Zennaro CERN, Geneva
	We report on the suppression of long-range wakefields in the main linacs of the CLIC collider. The wakefield is damped using a combination of detuning the frequencies of beam-excited higher order modes and by light damping, through slot-coupled manifolds. This unique accelerator, in the process of being fabricated, will be the first structure to demonstrate wakefield damping and the ability to sustain high accelerating gradients for CLIC. This serves as an alternative to the baseline CLIC design, which at present relies entirely on heavy damping. Detailed simulations are presented, on both the optimised surface fields resulting from the monopole mode, and from wakefield damping of the dipole modes. Preparations for the fabrication of a structure, suitable for high power testing, are also discussed. This design takes into account practical mechanical engineering issues and is the result of several optimisations since the original CLIC_DDS proposal[]. V.F. Khan and R.M. Jones, Presented at Particle Accelerator Conference (PAC 09), Vancouver, BC, Canada, 4-8 May 2009.

Paper

Title

Page

A High Phase Advance Damped and Detuned Structure for the Main Linacs of CLIC

R.M. Jones, A. D'Elia, V.F. Khan
UMAN, Manchester
A. Grudiev, W. Wuensch, R. Zennaro
CERN, Geneva

We report on the suppression of long-range wakefields in the main linacs of the CLIC collider. The wakefield is damped using a combination of detuning the frequencies of beam-excited higher order modes and by light damping, through slot-coupled manifolds. This unique accelerator, in the process of being fabricated, will be the first structure to demonstrate wakefield damping and the ability to sustain high accelerating gradients for CLIC. This serves as an alternative to the baseline CLIC design, which at present relies entirely on heavy damping. Detailed simulations are presented, on both the optimised surface fields resulting from the monopole mode, and from wakefield damping of the dipole modes. Preparations for the fabrication of a structure, suitable for high power testing, are also discussed. This design takes into account practical mechanical engineering issues and is the result of several optimisations since the original CLIC_DDS proposal[*].

*V.F. Khan and R.M. Jones, Presented at Particle Accelerator Conference (PAC 09), Vancouver, BC, Canada, 4-8 May 2009.