Driven response of a trapped particle beam

T. Satogata; T. Chen; B. Cole; D. Finley; A. Gerasimov; G. Goderre; M. Harrison; R. Johnson; I. Kourbanis; C. Manz; N. Merminga; L. Michelotti; S. Peggs; F. Pilat; S. Pruss; C. Saltmarsh; S. Saritepe; R. Talman; C. G. Trahern; G. Tsironis

doi:10.1103/PhysRevLett.68.1838

Driven response of a trapped particle beam

T. Satogata, T. Chen, B. Cole, D. Finley, A. Gerasimov, G. Goderre, M. Harrison, R. Johnson, I. Kourbanis, C. Manz, N. Merminga, L. Michelotti, S. Peggs, F. Pilat, S. Pruss, C. Saltmarsh, S. Saritepe, R. Talman, C. G. Trahern, and G. Tsironis

Phys. Rev. Lett. 68, 1838 – Published 23 March 1992

Abstract

The dynamics of a metastable beam of particles ‘‘injected’’ into artificially excited resonance islands in the Fermilab Tevatron is studied. Evolution of the captured beam distribution is measured by an externally detectable coherent signal. Dynamical partitions observed in the control space of amplitude and tune of a focusing modulation are consistent with an equivalent mode of an ensemble of driven gravity pendula. The model’s single parameter, the island tune $Q_{I}$ of small oscillations, is inferred as the central frequency of resonant detrapping under this weak drive.

Received 20 December 1991

DOI:https://doi.org/10.1103/PhysRevLett.68.1838

Authors & Affiliations

T. Satogata, T. Chen, B. Cole, D. Finley, A. Gerasimov, G. Goderre, M. Harrison, R. Johnson, I. Kourbanis, C. Manz, N. Merminga, L. Michelotti, S. Peggs, F. Pilat, S. Pruss, C. Saltmarsh, S. Saritepe, R. Talman, C. G. Trahern, and G. Tsironis

Fermi National Accelerator Laboratory, Batavia, Illinois 60510
Newman Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14853
SCC Laboratory, Dallas, Texas 75237
Brookhaven National Laboratory, Upton, New York 11973
Stanford Linear Accelerator Center, Stanford, California 94305
Physics Department, University of North Texas, Denton, Texas 76203