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  • Open Access

One-step tuning algorithm for π-mode cavities

Stan O. Schriber

  • Los Alamos National Laboratory, P.O. Box 1663, MS H820, Los Alamos, New Mexico 87545

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Phys. Rev. ST Accel. Beams 4, 122002 – Published 5 December, 2001

DOI: https://doi.org/10.1103/PhysRevSTAB.4.122002

Abstract

Cavities for π-mode operation are used in existing accelerators and are being built for many future systems. One of the steps in cavity construction is tuning individual cells within the cavity to ensure that the absolute values of relative peak on-axis electric field amplitudes in each cell are equal. This process may have multiple iterative steps: measuring the on-axis fields using bead-pull techniques, employing tuning methods to perturb the cells, making cell adjustments, and then repeating the process on the basis of the new results. This paper describes a one-step process for an N cell cavity that provides the necessary adjustment for each cell to achieve equal field amplitude absolute values from one bead-pull measurement. In addition, a method is shown for inferring relative cell fields while a cavity is operational in an accelerator complex.

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See Also

Analog analysis of π-mode structures: Results and implications

Stan O. Schriber
Phys. Rev. ST Accel. Beams 4, 122001 (2001)

References (4)

  1. Stan O. Schriber, Phys. Rev. ST Accel. Beams 4, 122001 (2001).
  2. Helen Stokes Deaven and Kwok Chi Dominic Chan, Los Alamos National Laboratory Report No. LA-UR-90-1766, 1990; LAACG Online Software Compendium, http://laacg1.lanl.gov/laacg/componl.html
  3. S. Martin and R. Stassen (private communication).
  4. H. R. Schneider, S. O. Schriber, and J. McKeown, in Proceedings of the Proton Linear Accelerator Conference, Los Alamos, NM, 1972, K. H. Harper (Los Alamos National Laboratory Report No. LA-5115, 1972), p. 233.

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Phys. Rev. ST Accel. Beams 4, 122002– Published 5 December, 2001
  • Received 8 July 2001
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