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Title |
Page |
| WEPMN078 |
RF Cavity Development for FFAG Application on ERLP at Daresbury
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2209 |
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- E. Wooldridge, C. D. Beard, B. D. Fell, P. A. McIntosh, B. Todd
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
- R. M. Jones, B. Spencer
UMAN, Manchester
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Funding for a non-scaling, Fixed Field Alternating Gradient (FFAG) facility has been approved for installation on the Energy Recovery Linac Prototype (ERLP) at Daresbury. The RF system specification for this project requires the development of a high efficiency, 1.3 GHz, normal conducting accelerating structure, capable of delivering the required accelerating voltage, whilst adhering to stringent space limitations imposed by the extremely compact nature of the FFAG ring. We have optimised a cavity design, providing the necessary acceleration and minimising the RF power requirements to match with commercially available power sources.
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| FRPMS069 |
Simulations of Stretched Wire Measurements of 3.9GHz Cavities for the ILC
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4177 |
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- R. M. Jones, N. Chanlek, B. Spencer
UMAN, Manchester
- G. Burt
Cockcroft Institute, Lancaster University, Lancaster
- P. Goudket
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
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We present wake-field simulations on both the main superconducting cavities and on the beam delivery system crab cavities of the ILC. We utilize both finite difference and finite element computer codes to simulate the electromagnetic fields in these cavities in the presence of a stretched wire. This study is intended to both predict the wake-field in experiments on the modal characterisation of 3.9 GHz cavities in progress at the Cockcroft Institute and, to explore practical issues concerning the feasibility of using this stretched wire method to investigate modes in the ILC main cavities. Multi-cell scattering matrices and the modes in infinite periodic structures are calculated with a view to aiding the interpretation of experimental results. A modal convergence study is also included
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