Dr. Volker Michael Hannen

Professur für Kernphysik (Prof. Weinheimer)
Dr. Volker Michael Hannen

Wilhelm-Klemm-Str. 9, room R. 207
48149 Münster

T: +49 251 83-34992
F: +49 251 83-34962

CV

Academic Education

PhD study in experimental nuclear physics at the Kernfysisch Versneller Instituut (KVI), Groningen, NL
Study of experimental physics at the Westfälische Wilhelms-Universität Münster

Positions

Scientist at the Nuclear Physics Institute, Westfälische Wilhelms-Universität Münster
Postdoc in experimental hadronic physics, II. Physikalisches Institut, Justus-Liebig-Universität Gießen
Instrument scientist in the Earth Oriented Science division of the Space Research Organization Netherlands (SRON), Utrecht, NL
Project
Articles
  • , and . . “An active transverse energy filter based on microstructured Si-PIN diodes with an angular-selective detection efficiency.” European Physical Journal C: Particles and Fields 86 (6): 674–674. doi: 10.1140/epjc/s10052-026-15915-6.
  • , and . . “A precision 32~keV angular-selective photoelectron source for calibration measurements at the KATRIN experiment.” European Physical Journal C: Particles and Fields 86 (7): 773–773. doi: 10.1140/epjc/s10052-026-15961-0.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . . “Storage-ring laser spectroscopy of accelerator-produced hydrogen-like 208Bi82+.” Nature Physics 025 (02825). doi: 10.1038/s41567-025-02885-x.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . . “Direct neutrino-mass measurement based on 259 days of KATRIN data.” Science 388 (6743). doi: 10.1126/science.adq9592.
  • , and . . “Measurement of the inhomogeneity of the KATRIN tritium source electric potential by high-resolution spectroscopy of conversion electrons from $\mathbf {^{83m}}$Kr.” European Physical Journal C: Particles and Fields 85 (7): 757–757. doi: 10.1140/epjc/s10052-025-14354-z.
  • , and . . “First Constraints on General Neutrino Interactions Based on KATRIN Data.” Physical Review Letters 134 (25): 251801–251801. doi: 10.1103/PhysRevLett.134.251801.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . . “A setup to study atomic state population dynamics and optical polarization at CRYRING@ESR.” Journal of Instrumentation 20 (06): P06047–P06047. doi: 10.1088/1748-0221/20/06/P06047.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . . “The XLZD Design Book: towards the next-generation liquid xenon observatory for dark matter and neutrino physics.” European Physical Journal C: Particles and Fields 85 (10): 1192. doi: 10.1140/epjc/s10052-025-14810-w.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . . “Testing Strong-Field QED to Second Order in the Highly Correlated Atomic System Berylliumlike Pb78+by Electron-Ion Collision Spectroscopy.” Physical Review Letters 135 (11): 113001. doi: 10.1103/6j3v-lwxj.
  • , , , , , , , , and . . “Characterization of the BOLDPET optical prototype, an innovative Cherenkov detector for 511 keV \ensuremath{γ} radiation.” Journal of Instrumentation 19 (07): P07018. doi: 10.1088/1748-0221/19/07/P07018.
  • . . “Measurement of the electric potential and the magnetic field in the shifted analysing plane of the KATRIN experiment.” European Physical Journal C: Particles and Fields 84: 1258. doi: 10.1140/epjc/s10052-024-13596-7.
  • , and . . “Search for Lorentz-invariance violation with the first KATRIN data.” Physical Review D 107 (8): 082005–082005. doi: 10.1103/PhysRevD.107.082005.
  • , and . . “A next-generation liquid xenon observatory for dark matter and neutrino physics.” Journal of Physics G: Nuclear and Particle Physics 50 (1): 013001–013001. doi: 10.1088/1361-6471/ac841a.
  • , and . . “Search for keV-scale sterile neutrinos with the first KATRIN data.” Journal of Instrumentation 83 (8): 763–763. doi: 10.1140/epjc/s10052-023-11818-y.
  • , , , , , , , , , , , , , , , , , , , , , and . “KATRIN background due to surface radioimpurities.” Astroparticle Physics 138: 102686.. doi: 10.1016/j.astropartphys.2022.102686.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . “Direct neutrino-mass measurement with sub-electronvolt sensitivity.” Nature Physics 18: 160–166. doi: 10.1038/s41567-021-01463-1.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . . “{KATRIN}: status and prospects for the neutrino mass and beyond.” Journal of Physics G: Nuclear and Particle Physics 49 (10): 100501–100501. doi: 10.1088/1361-6471/ac834e.
  • , and . . “An active transverse energy filter to differentiate low energy particles with large pitch angles in a strong magnetic field.” European Physical Journal C: Particles and Fields 82 (10): 922–922. doi: 10.1140/epjc/s10052-022-10858-0.
  • , and . . “Suppression of electrical breakdown phenomena in liquid TriMethyl Bismuth based ionization detectors.” Journal of Instrumentation 17 (09): P09029–P09029. doi: 10.1088/1748-0221/17/09/P09029.
  • , , , , , , , , and . . “Electro-purification studies and first measurement of relative permittivity of TMBi.” Journal of Instrumentation 17 (12): P12021–P12021. doi: 10.1088/1748-0221/17/12/P12021.
  • , and . . “The design, construction, and commissioning of the KATRIN experiment.” Journal of Instrumentation 16 (08): T08015.. doi: 10.1088/1748-0221/16/08/t08015.
  • , and . . “Bound on 3+1 Active-Sterile Neutrino Mixing from the First Four-Week Science Run of KATRIN.” Phys. Rev. Lett. 126 (9): 091803.. doi: 10.1103/PhysRevLett.126.091803.
  • , and . . “Analysis methods for the first KATRIN neutrino-mass measurement.” Phys. Rev. D 104 (1): 012005.. doi: 10.1103/PhysRevD.104.012005.
  • , and . . “Laser spectroscopy of the $^2{\mathrmS}_{1/2}{-}^2{\mathrmP}_{{1}/2}$, $^2{\mathrmP}_{3/2}$ transitions in stored and cooled relativistic C$^{3+}$ ions.” Sci. Rep. 11 (1): 9370.. doi: 10.1038/s41598-021-88926-w.
  • , and . . “Precision measurement of the electron energy-loss function in tritium and deuterium gas for the KATRIN experiment.” Eur. Phys. J. C 81 (7): 579.. doi: 10.1140/epjc/s10052-021-09325-z.
  • . . “Suppression of Penning discharges between the KATRIN spectrometers.” European Physical Journal C 80: 821. doi: 10.1140/epjc/s10052-020-8278-y.
  • , and . . “High-resolution spectroscopy of gaseous ^{83m}Kr conversion electrons with the KATRIN experiment.” J. Phys. G 47 (6): 065002.. doi: 10.1140/epjc/s10052-020-7718-z.
  • . . “First operation of the KATRIN experiment with tritium.” European Physical Journal C 80: 264. doi: 10.1140/epjc/s10052-020-7718-z.
  • , and . . “Solar Neutrino Detection Sensitivity in DARWIN via Electron Scattering.” European Physical Journal C 80: 1133. doi: 10.1140/epjc/s10052-020-08602-7.
  • . “A White Paper on keV sterile neutrino Dark Matter.” Journal of Cosmology and Astroparticle Physics 2017 (1): 025. doi: 10.1088/1475-7516/2017/01/025.
  • , , , , , , , , , , , , , , , , , , , , , , and . “Laser spectroscopy measurement of the 2s-hyperfine splitting in lithium-like bismuth.” Journal of Physics B: Atomic, Molecular and Optical Physics 50 (8). doi: 10.1088/1361-6455/aa63a0.
  • , , , , , , , , , , , , , , , , , , , , , , , , , and . “High precision hyperfine measurements in Bismuth challenge bound-state strong-field QED.” Nature Communications 8 (null). doi: 10.1038/ncomms15484.
  • , , , , and . “Deconvolution of the energy loss function of the KATRIN experiment.” Astroparticle Physics 89 (null): 30–38. doi: 10.1016/j.astropartphys.2017.01.010.
  • , , , , , , , , , , , , , , , , , and . “A pulsed, mono-energetic and angular-selective UV photo-electron source for the commissioning of the KATRIN experiment.” European Physical Journal C: Particles and Fields 77 (6). doi: 10.1140/epjc/s10052-017-4972-9.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . “DARWIN: towards the ultimate dark matter detector.” Journal of Cosmology and Astroparticle Physics 2016 (11): 017. doi: 10.1088/1475-7516/2016/11/017.
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . . “Commissioning of the vacuum system of the KATRIN Main Spectrometer.” Journal of Instrumentation 11: P04011. doi: 10.1088/1748-0221/11/04/P04011.
  • , , , , , , , , , , , , , , , , , and . “Laser cooling of relativistic highly charged ions at fair.” in Vol. null of International Particle Accelerator Conference Joint Accelerator Conferences Website (JACoW).
  • , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and . “DARWIN: Towards the ultimate dark matter detector.” Journal of Cosmology and Astroparticle Physics 2016 (11). doi: 10.1088/1475-7516/2016/11/017.
  • , , , , , , , , , , , , , , , and . “Status of deceleration and laser spectroscopy of highly charged ions at HITRAP.” Hyperfine Interactions 235 (null): 37–44. doi: 10.1007/s10751-015-1199-8.
  • , , , , , , , , , , , , , , , , , , , , , , , and . “Laser spectroscopy of the ground-state hyperfine structure in H-like and Li-like bismuth.” contribution to the 17th International Conference on the Physics of Highly Charged Ions, San Carlos de Bariloche, Argentina IOP Publishing. doi: 10.1088/1742-6596/583/1/012002.
  • , , , , , , , , , , , , , , , , , , , , , , , and . “An improved value for the hyperfine splitting of hydrogen-like <sup>209</sup>Bi<sup>82+</sup>.” Journal of Physics B: Atomic, Molecular and Optical Physics 48 (14). doi: 10.1088/0953-4075/48/14/144022.
  • , , , , , , , , , , , , , , , , , , , , , , , and . . “Observation of the hyperfine transition in lithium-like bismuth Bi 209 80+: Towards a test of QED in strong magnetic fields.” Physical Review A 90 (3): 030501. doi: 10.1103/PhysRevA.90.030501.
  • , , , , , , , , , , , , , and . “SpecTrap: Precision spectroscopy of highly charged ions - Status and prospects.” in Vol. null doi: 10.1088/0031-8949/2013/T156/014096.
  • , , , , , , , , , and . “Laser cooling of externally produced Mg ions in a Penning trap for sympathetic cooling of highly charged ions.” Physical Review A 87 (3). doi: 10.1103/PhysRevA.87.033423.
  • , , , , , , , , , , , , , , , , , , , , , and . “First observation of the ground-state hyperfine transition in 209Bi80+.” in Vol. null doi: 10.1088/0031-8949/2013/T156/014016.
  • , , , , and . . “Neutrino mass sensitivity by MAC-E-Filter based time-of-flight spectroscopy with the example of KATRIN.” New Journal of Physics 15: 113020.. doi: 10.1088/1367-2630/15/11/113020.
  • , , , , , , , , , , , and . . “Detection system for forward emitted photons at the Experimental Storage Ring at GSI.” Journal of Instrumentation 2013 (8): P09018.. doi: 10.1088/1748-0221/8/09/P09018.
  • , , , , , , , , , , , , , , , , , , , , and . “Optical measurement of the longitudinal ion distribution of bunched ion beams in the ESR.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 711: 90–95. doi: 10.1016/j.nima.2013.01.058.
  • , , , and . . “Current Direct Neutrino Mass Experiments.” Advances in High Energy Physics 2013: 293986.. doi: 10.1155/2013/293986.
  • . . “Direct neutrino mass determination: Status and prospects.” Journal of Physics: Conference Series 375 (PART 4). doi: 10.1088/1742-6596/375/1/042004.
  • , , , , , , , and . . “APDs as single-photon detectors for visible and near-infrared wavelengths down to Hz rates.” Journal of Instrumentation 7: P02015. doi: 10.1088/1748-0221/7/02/P02015.
  • , , , , , , , , , , , , , , and . . “Limits on the release of Rb isotopes from a zeolite based 83mKr calibration source for the XENON project.” Journal of Instrumentation 6 (10). doi: 10.1088/1748-0221/6/10/P10013.
  • , , , , , and . . “A contact-less 2-dimensional laser sensor for 3-dimensional wire position and tension measurements.” IEEE Transactions on Nuclear Science 57 (2 PART 2): 787–792. doi: 10.1109/TNS.2010.2042612.
  • , , , , , , , , , and . . “A UV LED-based fast-pulsed photoelectron source for time-of-flight studies.” New Journal of Physics 11: 063018.. doi: 10.1088/1367-2630/11/6/063018.
  • , , , , , , and . . “Characterization of LN2 cooled LAAPDs for single photon counting applications.” IEEE Nuclear Science Symposium Conference Record: 2475–2477.
  • , , , , , , , and . . “The Wire Electrode of the KATRIN Experiment.” XXIII CONFERENCE ON NEUTRINO PHYSICS AND ASTROPHYSICS 136: –..
  • , , , , , and . . “Contactless 2-dim laser sensor for 3-dim wire position and tension measurements.” IEEE Nuclear Science Symposium Conference Record: 1025–1029.
  • , , , , , , , , , , , , , , , , and . . “Proton scattering at intermediate energies on Ni58: How well is it understood?” Physical Review C - Nuclear physics 76 (1). doi: 10.1103/PhysRevC.76.014314.
  • , , , , , , , , , , , , , , , , and . . “Spin-isospin excitations in the medium-mass nucleus 58Co investigated with the (d, 2He) reaction.” Physical Review C - Nuclear physics 71 (1): 231–239. doi: 10.1103/PhysRevC.71.014606.
  • , , , , , , , , , , , , , , , , and . . “Polarized proton scattering on 58Ni at small momentum transfer: A test of the microscopic optical model and effective interactions.” Physics Letters B 612 (3-4): 165–172.
  • , , , , , , , , , , and . . “High-resolution determination of GT strength distributions relevant to the presupernova evolution using the (d,2He) reaction.” Physics Letters B 579 (3-4): 251–257.
  • , , , , , , , , , , , , , , , , , , and . . “On the determination of polarization observables in proton-induced reactions using large-acceptance magnetic spectrometers.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 500 (1-3): 68–83. doi: 10.1016/S0168-9002(02)02117-4.
  • , , , , , , , and . . “Measurement and microscopic analysis of the 11B(p→,p→) reaction at E p = 150 MeV. II. Depolarization in elastic scattering from odd-a nuclei.” Physical Review C - Nuclear physics 67 (5): 543211–543218.
  • , , , , , , , and . . “Measurement and microscopic analysis of the 11B(p→,p→) reaction at E p = 150 MeV. I. Inelastic scattering.” Physical Review C - Nuclear physics 67 (5): 543201–5432015.
  • , , , , , , , , , , , , and . . “High resolution studies of low lying GT strength using the (d, 2He) reaction and its impact on electron-capture rates in stellar environments.” Nuclear Physics A 719 (1-4): 131c–134c.. doi: 10.1016/S0375-9474(03)00982-5.
  • , , , , and . . “End-to-end simulations for the LISA Technology Package.” Classical and Quantum Gravity 20 (10): S261–S271.. doi: 10.1088/0264-9381/20/10/329.
  • , , , , , , , , , , , , , , , , , , , and . . “Measuring the (d, 2He) reaction with the focal-plane detection system of the BBS magnetic spectrometer at AGOR.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 481 (1-3): 253–261. doi: 10.1016/S0168-9002(01)01365-1.
  • , , , , , , , , , , , , , and . . “Gamow-teller matrix elements from the 12C(d, 2He) and 24Mg(d, 2He) reactions at 170 MeV.” Physical Review C - Nuclear physics 65 (4): 443231–443238.
  • , , , , , , , , , , , , , , , , , , and . . “Search for three-nucleon force effects in analyzing powers for →pd elastic scattering.” Physical Review Letters 86 (26 I): 5862–5865. doi: 10.1103/PhysRevLett.86.5862.
  • , , , , , , , , , , , , , and . . “Performance of the KVI in-beam polarimeter.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 457 (1-2): 12–21. doi: 10.1016/S0168-9002(00)00741-5.
  • , , , , , , , , , , , , and . . “Observation of the isovector giant monopole resonances in the (3He, t) reaction.” Nuclear Physics A 687 (1-2): 262c–269c.. doi: 10.1016/S0375-9474(01)00630-3.
  • , , , , , , , , , , , and . . “Investigation of effects beyond two-body forces in three-nucleon systems.” Nuclear Physics A 689 (1-2): 337c–340c.. doi: 10.1016/S0375-9474(01)00849-1.
  • , , , , , , , , , , , , , , , and . . “Deuteron elastic and inelastic scattering from 12C, 24Mg, and 58Ni at 170 MeV.” Physical Review C - Nuclear physics 63 (3): 376011–376014.
  • , , , , , , , , , , , , and . . “Search for Isovector Giant Monopole Resonances via the Pb( 3He,tp) Reaction.” Physical Review Letters 84 (17): 3779–3782. doi: 10.1103/PhysRevLett.84.3779.
  • , , , , , , , , , , , , , , , , , , and . . “Performance of an ASD-8 based wire chamber readout system.” IEEE Transactions on Nuclear Science 47 (6 IV): 2741–2747. doi: 10.1109/23.901181.
  • , , , , , , , , , , and . . “New wire chamber front-end system, based on the ASD-8 B chip.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 431 (1): 236–238. doi: 10.1016/S0168-9002(99)00248-X.
  • , , , , , , , , , , , , , and . . “A DSP-based readout and online processing system for a new focal-plane polarimeter at AGOR.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 437 (2-3): 459–470. doi: 10.1016/S0168-9002(99)00803-7.