Multi-Cell Reduced-Beta Elliptical Cavities for a Proton Linac

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A superconducting cavity has been designed for acceleration of particles traveling at 81% the speed of light ({beta} = 0.81). The application of interest is an 8 GeV proton linac proposed for a Fermilab upgrade; at present, the cavity is to be used from 420 MeV to 1.3 GeV. The cavity is similar to the 805 MHz high-{beta} cavity developed for the Spallation Neutron Source Linac, but the resonant frequency (1.3 GHz) and beam tube diameter (78 mm) are the same as for the {beta} = 1 cavities developed for the TESLA Test Facility. Four single-cell prototype cavities have been ... continued below

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3 pages

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Carneiro, J.-P.; Gonin, I.; Solyak, N.; Yakovlev, V.; /Fermilab; Mustapha, B. et al. May 1, 2009.

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A superconducting cavity has been designed for acceleration of particles traveling at 81% the speed of light ({beta} = 0.81). The application of interest is an 8 GeV proton linac proposed for a Fermilab upgrade; at present, the cavity is to be used from 420 MeV to 1.3 GeV. The cavity is similar to the 805 MHz high-{beta} cavity developed for the Spallation Neutron Source Linac, but the resonant frequency (1.3 GHz) and beam tube diameter (78 mm) are the same as for the {beta} = 1 cavities developed for the TESLA Test Facility. Four single-cell prototype cavities have been fabricated and tested. Two multi-cell prototypes have also been fabricated, but they have not yet been tested. The original concept was for an 8-cell cavity, but the final design and prototyping was done for 7-cells. An 11-cell cavity was proposed recently to allow the cryomodules for the {beta} = 0.81 cavity and downstream 9-cell {beta} = 1 cavities to be identical. The choice of number of cells per cavity affects the linac design in several ways. The impact of the number of cells in the 8 GeV linac design will be explored in this paper. Beam dynamics simulations from the ANL code TRACK will be presented.

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3 pages

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  • Presented at Particle Accelerator Conference (PAC 09), Vancouver, BC, Canada, 4-8 May 2009

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  • Report No.: FERMILAB-CONF-09-159-APC
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 952261
  • Archival Resource Key: ark:/67531/metadc930229

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  • May 1, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 29, 2016, 8:36 p.m.

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Carneiro, J.-P.; Gonin, I.; Solyak, N.; Yakovlev, V.; /Fermilab; Mustapha, B. et al. Multi-Cell Reduced-Beta Elliptical Cavities for a Proton Linac, article, May 1, 2009; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc930229/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.