Univ.-Prof. Dr. Frank Maas

Education

1993  
Dr. rer. nat., Fakultät für Physik und Astronomie, Ruprecht-Karls-Universität Heidelberg, Germany                                                                         Determination of the 1-S Lamb-shift in Muonium by doppler-free 
two-photon spectroscopy of the 1-S 2-S transition in Muonium

Current Positions

since 2007
Leading Scientist, GSI Gesellschaft für Schwerionenforschung,                             Darmstadt, Germany
since 2007 
Full Professor, Institut für Kernphysik,                                                           Johannes Gutenberg-Universität Mainz, Germany
since 2009
Section leader, Electromagnetic Processes (EMP), Helmholtz-Institut Mainz

Previous Positions

2005 – 2007
Leading Senior Researcher (Directeur de Recherche, DR2, permanent)
Institut de Physique Nucléaire Orsay, CNRS, France
1995 - 2005 
Research staff, junior group leader
Institute for Nuclear Physics, Johannes Gutenberg-Universität Mainz, Germany
1993 – 1995
Visiting Scientist
Physics department, Tokyo University, Japan,                                               based at CERN (Geneva, Switzerland)

Fellowships and Awards

since 2007
Regular grant awards by German grant authorities                                       (BMBF, DFG, DAAD, HGF, JGU Mainz)
2004  
Laureate of a nation-wide contest for a directeur de recherche, CNRS, France
1993 
Inoue Foundation Fellow, Inoue Foundation, Tokyo, Japan
1991 - 1993
Doctoral fellowship of the state Baden-Württemberg for
the promotion of excellent young researchers

Supervision of Graduate Students, Postdoctoral Fellows

since 2007
12 postdocs / 17 PhD / 15 Master students / 5 Diploma students /
12 Bachelor students, Johannes Gutenberg-University Mainz, Germany

Teaching Activities

As full professor: Lectures and courses on full curriculum of experimental physics on introductory level as well as advanced level: Mechanics,
Electromagnetism, Heat, Optics, Quantum physics, Atomic physics, Nuclear physics, Particle physics, Accelerator physics, Beginners and advanced laboratory courses, various seminars, Johannes Gutenberg University-Mainz

Institutional Responsibilites

since 2024
Vice-director of Helmholtz-Institut Mainz (HIM)
since 2012
Spokesperson and coordinator of the research topic Cosmic Matter in the Laboratory in the Helmholtz-Association for the Programme Oriented Funding (POF)
since 2012
Project leader in the PRISMA and PRISMA+ cluster of excellence, Mainz, Germany
since 2011
Project leader in DFG-funded collaborative research center 1044
2010 - 2016
Coordinator of an application for a research building at the German Wissenschaftsrat
2009 - 2018
Founding Director, Helmholtz Institut Mainz (HIM)
2008
Coordinator of an application for a Helmholtz Institute in Mainz
since 2005
Several positions in the management of the PANDA collaboration at FAIR, Darmstadt, Germany
since 2012
Spokesperson of the international P2 collaboration, Mainz, Germany
2002 - 2013
Spokesperson of the international A4 collaboration, Mainz, Germany)
1998 - 2005
Project leader in SPP 1034, SFB 443 (parity violating electron scattering)

Reviewing Activities

2015 - 2019
Member of the Program Advisory Committee (PAC) of the JLab accelerator (USA)
since 2014
Member of various referee panels for DOE, USA
2013 - 2016
Elected Member of the national advisory committee for BMBF for nuclear and hadron physics (KHuK)
2012 - 2017
Member of the steering committee for the PRISMA cluster of excellence in Mainz
since 2007
Referee for fund. appl. for DFG, HF (Germany), DOE (USA), and NSERC (Canada)
since 2005
Referee for international peer reviewed physics journals
Physical Review Letters, Physical Review C & D, Physics Letters, Nucl. Instr. and Methods

Memberships of Scientific Societies

since 1999
Member, German Physical Society, Germany
since 2017
Elected chair of Komitee für Hadronen und Kerne, Germany
2012 - 2019
elected Deputy Chair of Komitee für Hadronen und Kerne, Germany
since 2019
Member of plenary European Committee for Future Accelerators (plenary ECFA)

Research interests

  • Electromagnetic structure of hadrons
  • Electro-weak precision experiments
  • Two-photon exchange
  • Parity-violating electron scattering
  • Calorimetry
  • Fast experiment electronics
  • Electron beam polarimetry

Key publications

Parity violating Electron scattering and Electroweak Precision Experiments

  • Niklaus Berger; Achim Denig; Frank Maas; Concettina Sfienti; The MESA Experimental Program: A Laboratory for Precision Physics with Electron Scattering at Low Energy, Nuclear Physics News, 2021-07-03
    DOI: 10.1080/10619127.2021.1954434
  • D. Becker, R. Bucoveanu, C. Grzesik, K. Imai, R. Kempf, K. Imai, M. Molitor, A. Tyukin, M. Zimmermann and D. Armstrong, et al., The P2 experiment, Eur. Phys. J. A 54
    (2018) no.11, 208 doi:10.1140/epja/i2018-12611-6
  • Workshop to Explore Physics Opportunities with Intense, Polarized Electron Beams up to 300 MeV : MIT, Cambridge, MA, USA, March 14-16, editors: Richard Milner, Roger Carlini, and Frank Maas, AIP Conf.Proc. 1563 (2013), pp.1-280
  • F.E. Maas et al., Measurement of strange-quark contributions to the nucleon's form factors at Q2=0.230 (GeV/c)2, Phys. Rev. Lett. 93 (2004) 022002
  • F.E. Maas et al., Evidence for strange-quark contributions to the nucleon's form factors at Q2=0.108 (GeV/c)2, Phys. Rev. Lett. 94 (2005) 152001

Electromagnetic Structure of Hadrons

  • G. Barucca et al. [PANDA], Feasibility studies for the measurement of time-like proton electromagnetic form factors from anti-p p → µ+µ− at PANDA at FAIR, Eur. Phys. J. A 57
    (2021) no.1, 30 doi:10.1140/epja/s10050-020-00333-3
  • M. Ablikim et al. [BESIII], Oscillating features in the electromagnetic structure of the neutron, Nature Phys. 17 (2021) no.11, 1200-1204 doi:10.1038/s41567-021-01345-6
  • P. Larin, X. Zhou, J. Hu, F. Maas, R. F. Baldini, H. Hu and G. Huang, Electromagnetic Structure of the Neutron from Annihilation Reactions, Symmetry 14 (2022) no.2, 298
    doi:10.3390/sym14020298
  • D. Lin, A. Dbeyssi and F. Maas, Time-like Proton Form Factors with Initial State Radiation Technique, Symmetry 14 (2022) no.1, 91 doi:10.3390/sym14010091
  • L. Xia, C. Rosner, Y. D. Wang, X. Zhou, F. E. Maas, R. B. Ferroli, H. Hu and G. Huang, Proton Electromagnetic Form Factors in the Time-like Region through the Scan Technique, Symmetry 14 (2022) no.2, 231 doi:10.3390/sym14020231 [arXiv:2111.13009 [hepex]].
  • M. Ablikim et al. [BESIII], Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII, Phys. Lett. B 817 (2021), 136328
    doi:10.1016/j.physletb.2021.136328
  • M. Ablikim et al. [BESIII], Measurement of proton electromagnetic form factors in e+e− → p anti-p in the energy region 2.00 - 3.08 GeV, Phys. Rev. Lett. 124 (2020) no.4,
    042001 doi:10.1103/PhysRevLett.124.042001
  • M. Ablikim et al. [BESIII], Measurements of the Electric and Magnetic Form Factors of the Neutron for Timelike Momentum Transfer, Phys. Rev. Lett. 130 (2023) no.15,
    151905 doi:10.1103/PhysRevLett.130.151905

Two-Photon Exchange

  • B. S. Henderson et al. [OLYMPUS], Hard Two-Photon Contribution to Elastic LeptonProton Scattering: Determined by the OLYMPUS Experiment, Phys. Rev. Lett. 118
    (2017) no.9, 092501 doi:10.1103/PhysRevLett.118.092501
  • J. C. Bernauer et al. [OLYMPUS], Measurement of the Charge-Averaged Elastic LeptonProton Scattering Cross Section by the OLYMPUS Experiment, Phys. Rev. Lett. 126
    (2021) no.16, 162501 doi:10.1103/PhysRevLett.126.162501
  • B. Gou, J. Arvieux, K. Aulenbacher, D. B. Ríos, S. Baunack, D. Becker, L. Capozza, W. Deconinck, J. Diefenbach and R. Frascaria, et al. Study of Two-Photon Exchange via the Beam Transverse Single Spin Asymmetry in Electron-Proton Elastic Scattering at Forward Angles over a Wide Energy Range, Phys. Rev. Lett. 124 (2020) no.12, 122003
    doi:10.1103/PhysRevLett.124.122003
  • F.E. Maas et al. Measurement of the transverse beam spin asymmetry in elastic electron-proton scattering and the inelastic contribution to the imaginary part of the two-photon exchange amplitude
    Phys. Rev. Lett. 94 (2005) 082001