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Phys. Rev. ST Accel. Beams 1, 030101 (1998) [7 pages]

Bunching near transition in the BNL AGS

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C. Ankenbrandt, K-Y. Ng, J. Norem, M. Popovic, and Z. Qian
Fermi National Accelerator Laboratory, Batavia, Illinois 60510

L. A. Ahrens, M. Brennan, V. Mane, T. Roser, D. Trbojevic, and W. van Asselt
Brookhaven National Laboratory, Upton, New York 11973

Received 28 January 1998; published 13 July 1998

The proton driver for the muon collider must produce short pulses of protons in order to facilitate muon cooling and operation with polarized beams. In order to test methods of producing these bunches, we have operated the alternating-gradient synchrotron near transition and studied procedures which involved moving the transition energy γt to the beam energy. We were able to produce stable bunches of 3–5×1012 protons with rms widths of σ=2.0–2.7ns for longitudinal bunch areas of 1.5eVs, in addition to making measurements of the lowest two orders of the momentum compaction factor.

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© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.1.030101
DOI:
10.1103/PhysRevSTAB.1.030101
PACS:
29.20.-c, 29.27.Ac, 29.27.Bd, 29.27.Fh