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Prof. Dr. Allen Caldwell

Research focus

Allen Caldwell's research focuses on the investigation of the fundamental building blocks of matter, their properties and their interactions.

He is involved in several research projects:


The scientific work carried out by Prof. Allen Caldwell (USA) currently includes the development of novel particle accelerator technology based on plasma wakefields, the study of the quarks and gluons and their interactions, the fundamental properties of neutrinos and, more recently, the search for a new candidate for Dark Matter - axions.  In addition, he has a great interest in probability and statistics, and lectures on data analysis techniques and Monte Carlo methods at the Technical University of Munich.  

The plasma based accelerator experiment is explained in the video How can plasma and proton beams be used in building next generation particle accelerators?

Prof. Caldwell was born in Verdun/France in 1959, studied physics at Rice University in Texas, then moved to the University of Wisconsin where he earned his doctorate. He then spent 15 years at Columbia University, where he eventually became professor. In 1997, he became head of the ZEUS experiment at the HERA accelerator at DESY in Hamburg. In 1999, he was made director of the Nevis Laboratory at Columbia University in New York; since 2002 he has been a Member of the Board of Directors of the Max Planck Institute for Physics. He currently heads the Institute as its Managing Director and heads the AWAKE experiment at CERN .

Charges (selected)

    • China Jinping Laboratory Scientific Advisory Committee (since 2015)
    • International Review Committee, Canadian Institute of Particle Physics (2016)
    • Advisory member, DIS and Related Topics (since 2007)
    • Advisory board, Annalen der Physik
    • Perspectives Committee of the CPT section of the Max Planck Society (since 2012)

    Scientific awards & memberships

    • Distinguished Alumnus Award, University of Wisconsin (2012)
    • Honorary Professor at the Technical University of Munich (2006)
    • Fellow of the American Physical Society (2000)
    • Alexander von Humboldt Fellowship (1995-1997)


    The evolution of σγP with coherence length, A. Caldwell, New J.Phys. 18 (2016) no.7, 073019

    Path to AWAKE: Evolution of the concept,  A. Caldwell, et al.  Nucl.Instrum.Meth. A829 (2016) 3-16

    VHEeP: A very high energy electron-proton collider based on proton-driven plasma wakefield acceleration,  A. Caldwell, M. Wing  Eur.Phys.J. C76 (2016) no.8, 463

    Results on ββ decay with emission of two neutrinos or Majorons in 76Ge from GERDA Phase I,  GERDA Collaboration (M. Agostini  et al), Eur.Phys.J. C75 (2015) no.9

    Deep inelastic cross-section measurements at large y with the ZEUS detector at HERA, ZEUS Collaboration (H. Abramowicz  et al.).  Phys.Rev. D90 (2014) no.7, 072002

    Measurement of neutral current e±p cross sections at high Bjorken x with the ZEUS detector, ZEUS Collaboration (H. Abramowicz  et al.). Phys.Rev. D89 (2014) no.7, 072007
    Effect of plasma inhomogeneity on plasma wakefield acceleration driven by long bunches, K.V. Lotov, A. Pukhov, A. Caldwell, Phys.Plasmas 20 (2013) 013102

    Results on Neutrinoless Double-ββ Decay of 76Ge from Phase I of  the GERDA Experiment, GERDA Collaboration (M. Agostini et al.). Phys.Rev.Lett. 111 (2013) no.12, 122503

    Error Bars for Distributions of Numbers of Events, R. Aggarwal, A. Caldwell, Eur. Phys. J. Plus 127 (2012) 24
    Plasma Wakefield Acceleration with a Modulated Proton Bunch, A. Caldwell, K. Lotov. Phys. Plasmas 18 (2011) 103101

    p-values for model evaluation”, F. Beaujean, A. Caldwell, D. Kollar, K. Kröninger, Phys. Rev. D83 (2011) 012004

    BAT: The Bayesian analysis toolkit”, A. Caldwell, Daniel Kollar, Kevin Kröninger. Comput. Phys. Commun. 180 (2009) 2197-2209