[1] STFC Daresbury Lab, ASTeC, Accelerator Sci & Technol Ctr, Warrington WA4 4AD, Cheshire, England
[2] Aix Marseille Univ, IUSTI, CNRS, UMR 7343, Polytech Marseille, France
[3] Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia
[4] CERN, Geneva, Switzerland
[5] Cockcroft Inst, Warrington WA4 4AD, Cheshire, England
[6] Czech Tech Univ, Zikova 1903-4, Prague 16636 6, Czech Republic
[7] DESY, Notkestr 85, D-22607 Hamburg, Germany
[8] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[9] Univ Dusseldorf, Moorenstr 5, D-40225 Dusseldorf, Germany
[10] Univ Lisbon, Inst Super Tecn, GoLP Inst Plasmas & Fusao Nucl, Lisbon, Portugal
[11] Imperial Coll London, Blackett Lab, London SW7 2BW, England
[12] John Adams Inst Accelerator Sci, Oxford, England
[13] Karlsruhe Inst Technol, D-76021 Karlsruhe, Germany
[14] Univ Lancaster, Lancaster LA1 4YR, England
[15] Los Alamos Natl Lab, Los Alamos, NM USA
[16] Univ Munich, D-80539 Munich, Germany
[17] Max Planck Inst Nucl Phys, Saupfercheckweg 1, D-69117 Heidelberg, Germany
[18] Max Planck Inst Phys & Astrophys, Fohringer Ring 6, D-80805 Munich, Germany
[19] Max Planck Inst Plasma Phys, Wendelsteinstr 1, D-17491 Greifswald, Germany
[20] Northern Illinois Univ, 1425 W Lincoln Hwy, De Kalb, IL 60115 USA
[21] Novosibirsk State Univ, Novosibirsk 630090, Russia
[22] PSI, CH-5232 Villigen, Switzerland
[23] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
[24] SLAC Natl Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA
[25] STFC Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
[26] Ecole Polytech Fed Lausanne, Swiss Plasma Ctr, CH-1015 Lausanne, Switzerland
[27] Tech Univ Munich, Arcisstr 21, D-80333 Munich, Germany
[28] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada
[29] Tsinghua Univ, Beijing 100084, Peoples R China
[30] UCL, Gower St, London WC1E 6BT, England
[31] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England
[32] Univ Manchester, Manchester M13 9PL, Lancs, England
[33] Univ Oslo, N-0316 Oslo, Norway
[34] Univ Oxford, Oxford OX1 2JD, England
[35] Univ Strathclyde, 16 Richmond St, Glasgow G1 1XQ, Lanark, Scotland
[36] Univ Victoria, 3800 Finnerty Rd, Victoria, BC, Canada