Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Acceleration in the linear non-scaling fixed-field alternating-gradient accelerator EMMA
AU - Machida, S.
AU - Barlow, R.
AU - Berg, J.S.
AU - Bliss, N.
AU - Buckley, R.K.
AU - Clarke, J.A.
AU - Craddock, M.K.
AU - D'Arcy, R.
AU - Edgecock, R.
AU - Garland, J.M.
AU - Giboudot, Y.
AU - Goudket, P.
AU - Griffiths, S.
AU - Hill, C.
AU - Hill, S.F.
AU - Hock, K.M.
AU - Holder, D.J.
AU - Ibison, M.G.
AU - Jackson, F.
AU - Jamison, S.P.
AU - Johnstone, C.
AU - Jones, J.K.
AU - Jones, L.B.
AU - Kalinin, A.
AU - Keil, E.
AU - Kelliher, D.J.
AU - Kirkman, I.W.
AU - Koscielniak, S.
AU - Marinov, K.
AU - Marks, N.
AU - Martlew, B.
AU - McIntosh, P.A.
AU - McKenzie, J.W.
AU - Méot, F.
AU - Middleman, K.J.
AU - Moss, A.
AU - Muratori, B.D.
AU - Orrett, J.
AU - Owen, H.L.
AU - Pasternak, J.
AU - Peach, K.J.
AU - Poole, M.W.
AU - Rao, Y.-N.
AU - Saveliev, Y.
AU - Scott, D.J.
AU - Sheehy, S.L.
AU - Shepherd, B.J.A.
AU - Smith, R.
AU - Smith, S.L.
AU - Trbojevic, D.
AU - Tzenov, S.
AU - Weston, T.
AU - Wheelhouse, A.
AU - Williams, P.H.
AU - Wolski, A.
AU - Yokoi, T.
PY - 2012
Y1 - 2012
N2 - In a fixed-field alternating-gradient (FFAG) accelerator, eliminating pulsed magnet operation permits rapid acceleration to synchrotron energies, but with a much higher beam-pulse repetition rate. Conceived in the 1950s, FFAGs are enjoying renewed interest, fuelled by the need to rapidly accelerate unstable muons for future high-energy physics colliders. Until now a ‘scaling’ principle has been applied to avoid beam blow-up and loss. Removing this restriction produces a new breed of FFAG, a non-scaling variant, allowing powerful advances in machine characteristics. We report on the first non-scaling FFAG, in which orbits are compacted to within 10 mm in radius over an electron momentum range of 12–18 MeV/c. In this strictly linear-gradient FFAG, unstable beam regions are crossed, but acceleration via a novel serpentine channel is so rapid that no significant beam disruption is observed. This result has significant implications for future particle accelerators, particularly muon and high-intensity proton accelerators.
AB - In a fixed-field alternating-gradient (FFAG) accelerator, eliminating pulsed magnet operation permits rapid acceleration to synchrotron energies, but with a much higher beam-pulse repetition rate. Conceived in the 1950s, FFAGs are enjoying renewed interest, fuelled by the need to rapidly accelerate unstable muons for future high-energy physics colliders. Until now a ‘scaling’ principle has been applied to avoid beam blow-up and loss. Removing this restriction produces a new breed of FFAG, a non-scaling variant, allowing powerful advances in machine characteristics. We report on the first non-scaling FFAG, in which orbits are compacted to within 10 mm in radius over an electron momentum range of 12–18 MeV/c. In this strictly linear-gradient FFAG, unstable beam regions are crossed, but acceleration via a novel serpentine channel is so rapid that no significant beam disruption is observed. This result has significant implications for future particle accelerators, particularly muon and high-intensity proton accelerators.
U2 - 10.1038/nphys2179
DO - 10.1038/nphys2179
M3 - Journal article
VL - 8
SP - 243
EP - 247
JO - Nature Physics
JF - Nature Physics
SN - 1745-2473
IS - 3
ER -