Studies of Coupled Cavity Linac (CCL) Accelerating Structures with 3-D Codes

The cw CCL being designed for the Accelerator Production of Tritium (APT) project accelerates protons from 96MeV to 211MeV. It consists of 99 segments each containing up to seven accelerating cavities. Segments are coupled by intersegment coupling cavities and grouped into supermodules. The design m...

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Bibliographic Details
Published inarXiv.org
Main Authors Spalek, G, Christiansen, D W, Smith, P D, Greninger, P T, Charman, C M
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 17.08.2000
Subjects
Aluminum
Coupling
Holes
Segments
Tritium
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Summary:The cw CCL being designed for the Accelerator Production of Tritium (APT) project accelerates protons from 96MeV to 211MeV. It consists of 99 segments each containing up to seven accelerating cavities. Segments are coupled by intersegment coupling cavities and grouped into supermodules. The design method needs to address not only basic cavity sizing for a given coupling and pi/2 mode frequency, but also the effects of high power densities on the cavity frequency, mechanical stresses, and the structure's stop band during operation. On the APT project, 3-D RF (Ansoft Corp.'s HFSS) and coupled RF/structural (Ansys Inc.'s ANSYS) codes are being used to develop tools to address the above issues and guide cooling channel design. The code's predictions are being checked against available low power Aluminum models. Stop band behavior under power will be checked once the tools are extended to CCDTL structures that have been tested at high power. A summary of calculations made to date and agreement with measured results will be presented.
ISSN:2331-8422