Publikationen
2022 | A High-Q Superconducting Toroidal Medium Frequency Detection System with a Capacitively Adjustable Frequency Range >180 kHz. |
F. Voelksen, M. J. Borchert, J. A. Devlin, S. Erlewein, M. Fleck, J. A. Harrington, B. Latacz, E. Wursten, A. H. Mooser, M. A. Bohman, V. Grunhofer, C. Smorra, M. Wiesinger, C. Will, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer | |
Review of Scientific Instruments (akzeptiert, 2022) | |
Direct Measurement of the 3He magnetic moments | |
A. Schneider, B. Sikora, S. Dickopf, M. Müller, N. S. Oreshkina, A. Rischka, I. A. Valuev, S. Ulmer, J. Walz, Z. Harman, C. H. Keitel, A. Mooser & K. Blaum | |
Nature 606, 878 (2022) | |
Millicharged Dark Matter Detection with Ion Traps | |
D. Budker, P. W. Graham, H. Ramani, F. Schmidt-Kaler, C. Smorra, and S. Ulmer | |
PRX-Quantum 3, 010330 (2022). | |
A 16 parts-per-trillion measurement of the antiproton-to-proton charge-mass ratio | |
M. J. Borchert, J. A. Devlin, S. Erlewein, M. Fleck, J. A. Harrington, B. Latacz, E. Wursten, A. H. Mooser, M. A. Bohman, V. Grunhofer, C. Smorra, M. Wiesinger, C. Will, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer | |
Nature 601, 53 (2022) | |
2021 | LC circuit mediated sympathetic cooling of a proton via image currents |
M. A. Bohman, V. Grunhofer, C. Smorra, M. Wiesinger, C. Will, M. J. Borchert, J. A. Devlin, S. Erlewein, M. Fleck, J. A. Harrington, B. Latacz, E. Wursten, A. H. Mooser, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer | |
Nature 596, 514 (2021) | |
Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons | |
J. M. Cornejo, R. Lehnert, M. Niemann, J. Mielke, T. Meiners, A. Bautista-Salvador, M. Schulte, D. Nitzschke, M. J. Borchert, K. Hammerer, S. Ulmer, C. Ospelkaus | |
New Journal of Physics 23, 073045 (2021) | |
Constraints on the coupling between axion-like dark matter and photons using an antiproton superconducting tuned detection circuit in a cryogenic Penning trap | |
J. A. Devlin, M. J. Borchert, S. Erlewein, M. Fleck, J. A. Harrington, B. Latacz, J. Warncke, E. Wursten, M. A. Bohman, A. H. Mooser, C. Smorra, M. Wiesinger, C. Will, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer | |
Phys. Rev. Lett. 126, 041301 (2021) | |
Measurement of the Principal Quantum Number Distribution in a Beam of Antihydrogen Atoms | |
B. Kolbinger et al. (ASACUSA collaboration) | |
EPJD 75, 91 (2021) | |
2020 | Detection of Metastable Electronic States by Penning Trap Mass Spectrometry |
R. X. Schüssler, H. Bekker,, M. Braß, H. Cakir, J. R. Crespo López-Urrutia, M. Door, P. Filianin, Z. Harman, M. W. Haverkort, W. J. Huang, P. Indelicato, C. H. Keitel, C. M. König, K. Kromer, M. Müller, Y. N. Novikov, A. Rischka, C. Schweiger, S. Sturm, S. Ulmer, S. Eliseev, K. Blaum | |
Nature 581, 64 (2020) | |
Elementary Laser-Less Quantum Logic Operations with Single (Anti-)Protons in Penning Traps | |
M. Niemann, T. Meiners, J. Mielke, M. J. Borchert, J. M. Cornejo, S. Ulmer and C. Ospelkaus | |
Advanced Quantum Technologies 3, 1900133 (2020) | |
2019 | Cryogenic Be+ Penning Trap for Precision Measurements with Antiprotons |
M. Niemann, T. Meiners, J. Mielke, M. J. Borchert, J. M. Cornejo, S. Ulmer and C. Ospelkaus | |
Measurement Science and Technology 31, 035003 (2019) | |
Direct Limits on the Interaction of Antiprotons with Axion-Like Dark Matter | |
C. Smorra, Y. Stadnik, M. Bohman, M. J. Borchert, S. Erlewein, J. A. Harrington, J. A. Devlin, P.E. Blessing, T. Higuchi, M. Wiesinger, G. Schneider, A. Mooser, K. Blaum, Y. Matsuda, W. Quint, J. Walz, D. Budker, and S. Ulmer | |
Nature 575, 310 (2019) | |
Measurement of Ultra-Low Heating Rates in a Cryogenic Penning Trap | |
M. J. Borchert, P.E. Blessing, J.A. Devlin, J. A. Harrington, T. Higuchi, J. Morgner, E. Wursten, M. Bohman, M. Wiesinger, C. Smorra, K. Blaum, Y. Matsuda, W. Quint, J. Walz, and S. Ulmer | |
Phys. Rev. Lett. 122, 043201 (2019) | |
A Novel Penning Trap Design for the High Precision Measurement of the 3He2+ Nuclear Magnetic Moment | |
A. Schneider, A. Mooser, A. Rischka, K. Blaum, S. Ulmer, J. Walz | |
Ann. Phys. (Berlin) 531, 1800485 (2019) | |
Superconducting Solenoid System with Adjustable Shielding Factor for Precision measurements of the Properties of the Antiprotons | |
J.A. Devlin, E. Wursten, J. A. Harrington, M. J. Borchert, P.E. Blessing, T. Higuchi, J. Morgner, M. Bohman, M. Wiesinger, C. Smorra, K. Blaum, Y. Matsuda, W. Quint, J. Walz, and S. Ulmer | |
Phys. Rev. Appl. 12, 044012 (2019) | |
2018 | Challenging the Standard Model by high precision comparisons of the fundamental properties of protons and antiprotons |
S. Ulmer, A. Mooser, H. Nagahama, S. Sellner, C. Smorra | |
Phil.Trans.R.Soc.A 376, 20170275 (2017) | |
The ASACUSA antihydrogen and hydrogen program: results and prospects | |
C. Malbrunot, et. al. (ASACUSA collaboration) | |
Phil. Trans. R. Soc. A 376: 20170273 | |
Imaging antimatter with a Micromegas detector | |
V. Mäckel et al. (ASACUSA collaboration) | |
Nucl. Instrum. Meth. B 422, 1 (2018) | |
2017 | Sympathetic cooling of protons and antiprotons with a common endcap Penning trap |
M. Bohman, G. Schneider, A. Mooser, N. Schön, J. Harrington, T. Higuchi, H. Nagahama, S. Sellner, C. Smorra, K. Blaum, Y. Matsuda, W. Quint, J. Walz, S. Ulmer | |
Journ. Mod. Opt. DOI: 10.1080/09500340.2017.1404656 (2017) | |
Double-trap measurement of the proton magnetic moment at 0.3 parts per billion precision | |
G. Schneider, A. Mooser, M. Bohman, N. Schön, J. Harrington, T. Higuchi, H. Nagahama, S. Sellner, C. Smorra, K. Blaum, Y. Matsuda, W. Quint, J. Walz, S. Ulmer | |
Science 358, 1081 (2017) | |
A parts-per-billion measurement of the antiproton magnetic moment | |
C. Smorra, S. Sellner, M. J. Borchert, J. A. Harrington, T. Higuchi, H. Nagahama, T. Tanaka, A. Mooser, G. Schneider, M. Bohman, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki and S. Ulmer | |
Nature 550, 371-374 (2017) | |
Improved limit on the directly measured antiproton lifetime | |
S. Sellner, M. Besirli, M. Bohman, M.J. Borchert, J. Harrington, T. Higuchi, A. Mooser, H. Nagahama, G. Schneider, C. Smorra, T. Tanaka, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki and S. Ulmer | |
New J. Phys. 19 083023 (2017) | |
High-Precision Measurement of the Proton’s Atomic Mass | |
F. Heiße, F. Köhler-Langes, S. Rau, J. Hou, S. Junck, A. Kracke, A. Mooser, W. Quint, S. Ulmer, G. Werth, K. Blaum, and S. Sturm | |
Phys. Rev. Lett. 119, 033001 (2017) | |
Observation of individual spin quantum transitions of a single antiproton | |
C. Smorra, A. Mooser, M. Besirli, M. Bohman, M. J. Borchert, J. Harrington, T. Higuchi, H. Nagahama, T. Tanaka, S. Sellner, G. Schneider, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, and S. Ulmer | |
Phys. Lett. B 769, 1 (2017) | |
Optical transition seen in antihydrogen | |
S. Ulmer | |
Nature 541, 467 (2017) | |
Sixfold improved single particle measurement of the magnetic moment of the antiproton | |
H. Nagahama, C. Smorra, S. Sellner, J. Harrington, T. Higuchi, M. J. Borchert, T. Tanaka, M. Besirli, A. Mooser, G. Schneider, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, Y. Yamazaki, and S. Ulmer | |
Nat. Commun. 8 14084 (2017) | |
2016 | Highly sensitive superconducting circuits at 700 kHz with tunable quality factors for image-current detection of single trapped antiprotons. |
H. Nagahama, G. Schneider, A. Mooser, M. Besirli, M. J. Borchert, K. Blaum, J. Harrington, T. Higuchi, Y. Matsuda, C. Ospelkaus, W. Quint, S. Sellner, C. Smorra, T. Tanaka, J. Walz, Y. Yamazaki, and S. Ulmer | |
Rev. Sci. Instrum. 87 113305 (2016) | |
2015 | The ASACUSA-CUSP, an antihydrogen experiment |
N. Kuroda et al. | |
DOI 10.1007/s10751-015-1205-1 | |
High-precision comparison of the antiproton-to-proton charge-to-mass ratio | |
S. Ulmer, C. Smorra, A. Mooser, K. Franke, H. Nagahama, G. Schneider, T. Higuchi, S. Van Gorp, K. Blaum, Y. Matsuda, W. Quint, J. Walz, Y. Yamazaki | |
Nature 524, 196 (2015) | |
BASE - The Baryon Antibaryon Symmetry Experiment | |
C. Smorra, K. Blaum, L. Bojtar, M. Borchert, K. A. Franke, T. Higuchi, N. Leefer, H. Nagahama, Y. Matsuda, A. Mooser, M. Niemann, C. Ospelkaus, W. Quint, G. Schneider, S. Sellner, T. Tanaka, S. Van Gorp, J. Walz, Y. Yamazaki, S. Ulmer | |
Eur. Phys. J. Special Topics 224, 3055 (2015) | |
Das magnetische Moment des Protons | |
A. Mooser, C. Smorra, S. Ulmer | |
PhiuZ 46, 92 (2015) | |
A reservoir trap for antiprotons | |
C. Smorra, A. Mooser, K. Franke, H. Nagahama, G. Schneider, T. Higuchi, S. V. Gorp, K. Blaum, Y. Matsuda, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer | |
Int. J. Mass. Spectrom. 389, 10 (2015) | |
The development of the antihydrogen beam detector and the detection of the antihydrogen atoms for in-flight hyperfine spectroscopy | |
Y. Nagata et al. | |
Journ. Phys. Conf. Ser. 635, 022061 (2015) | |
Precise Tests of Fundamental Symmetries with Exotic Particles in Penning Traps | |
S. Ulmer, W. Quint and K. Blaum | |
World Scientific Books, Lecture Notes (2015) | |
2014 | Towards a high-precision measurement of the antiproton magnetic moment |
C. Smorra, K. Blaum, K. Franke, Y. Matsuda, A. Mooser, H. Nagahama, C. Ospelkaus, W. Quint, G. Schneider, S. Van Gorp, J. Walz, Y. Yamazaki, S. Ulmer | |
Hyp. Int. 228, 31 (2014) | |
Direct high-precision measurement of the magnetic moment of the proton | |
A. Mooser, S. Ulmer, K. Blaum, K. Franke, H. Kracke, C. Leiteritz, W. Quint, C. C. Rodegheri, C. Smorra, und J. Walz | |
Nature 509, 596 (2014) | |
The magnetic moments of the proton and the antiproton | |
S. Ulmer, A. Mooser, K. Blaum, S. Braeuninger, K. Franke, H. Kracke, C. Leiteritz, Y. Matsuda, H. Nagahama, C. Ospelkaus, C. C. Rodegheri, W. Quint, G. Schneider, C. Smorra, S. Van Gorp, J. Walz und Y. Yamazaki | |
J. Phys.: Conf. Ser. 488, 012033 (2014) | |
A Source of Antihydrogen for In-Flight Hyperfine Spectroscopy | |
N. Kuroda, S. Ulmer, D. J. Murtagh, S. Van Gorp, Y. Nagata, et al. | |
Nature Communications 5, 3089 (2014) | |
The magnetic moments of the proton and the antiproton | |
S. Ulmer and C. Smorra | |
Book chapter in: PRECISION SPECTROSCOPY IN ION TRAPS FOR FUNDAMENTAL PHYSICS, Editors: W. Quint and M. Vogel (Springer 2014) | |
Towards a spin polarized antihydrogen beam | |
N. Kuroda et al. | |
Hyperfine Interactions 228, 67 (2014) | |
2013 | Demonstration of the double Penning trap technique with a single proton |
A. Mooser, S. Bräuninger, K. Franke, H. Kracke, C. Leiteritz, C.C. Rodegheri, H. Nagahama, G. Schneider, C. Smorra, K. Blaum, Y. Matsuda, W. Quint, J. Walz, Y. Yamazaki, S. Ulmer | |
Phys. Lett. B 723, 78 (2013) | |
Resolution of single spin flips of a single proton | |
A. Mooser, H. Kracke, K. Blaum, S. A. Bräuninger, K. Franke, C. Leiteritz, W. Quint, C. C. Rodegheri, S. Ulmer, und J. Walz | |
Phys. Rev. Lett. 110, 140405 (2013) | |
A cryogenic detection system at 28.9 MHz for the non-destructive observation of a single proton at low particle energy | |
S. Ulmer, K. Blaum, H. Kracke, A. Mooser, W. Quint, C.C. Rodegheri, J. Walz | |
Nucl. Instrum. Methods A 705, 55 (2013) | |
CPT symmetry tests with cold antiprotons and antihydrogen | |
Y. Yamazaki and S. Ulmer | |
Ann. d. Phys. 525, 493 (2013) | |
Resolution of Single Spin-Flips of a Single Proton | |
A. Mooser, H. Kracke, K. Blaum, S. A. Braeuninger, K. Franke, C. Leiteritz, W. Quint, C. C. Rodegheri, S. Ulmer, J. Walz | |
Phys. Rev. Lett. 110, 140405 (2013) | |
Measurement of the Hyperfine Structure of Antihydrogen in a Beam | |
E. Widmann, M. Diermaier, B. Juhász, C. Malbrunot, O. Massiczek, C. Sauerzopf, K. Suzuki, B. Wünschek, J. Zmeskal, S. Federmann, N. Kuroda, S. Ulmer, Y. Yamazaki | |
Hyp. Int. 215, 1 (2013) | |
2012 | An experiment for the direct determination of the g-factor of a single proton in a Penning trap |
C. C. Rodegheri, K. Blaum, H. Kracke, S. Kreim, A. Mooser, W. Quint, S. Ulmer und J. Walz | |
New J. Phys. 14, 063011 (2012) | |
2011 | Direct measurement of the free cyclotron frequency of a single particle in a Penning trap |
S. Ulmer, K. Blaum, H. Kracke, A. Mooser, W. Quint, C. C. Rodegheri, und J. Walz | |
Phys. Rev. Lett. 107, 103002 (2011) | |
Observation of spin flips with a single trapped proton | |
S. Ulmer, C. C. Rodegheri, K. Blaum, H. Kracke, A. Mooser, W. Quint, und J. Walz | |
Phys. Rev. Lett. 106, 253001 (2011) | |
Towards a direct measurement of the g-factor of a single isolated proton | |
A. Mooser, K. Blaum, H. Kracke, S. Kreim, W. Quint, C. C. Rodeghéri, S. Ulmer, und J. Walz | |
Can. J. Phys. 89, 165 (2011) | |
2009 | The quality factor of a superconducting rf resonator in a magnetic field |
S. Ulmer, H. Kracke, K. Blaum, S. Kreim, A. Mooser, W. Quint, C. C. Rodegheri, und J. Walz | |
Rev. Sci. Instrum. 80, 123302 (2009) | |
Developments for the direct determination of the g-factor of a single proton in a Penning trap | |
C. C. Rodegheri, K. Blaum, H. Kracke, S. Kreim, A. Mooser, C. Mrozik, W. Quint, S. Ulmer und J. Walz | |
Hyp. Int. 194, 93 (2009) | |
g-factor experiments on simple systems in Penning traps | |
K. Blaum, H. Kracke, S. Kreim, A. Mooser, C. Mrozik, W. Quint, C. C. Rodegheri, B. Schabinger, S. Sturm, S. Ulmer, A. Wagner, J. Walz und G. Werth | |
J. Phys. B: At. Mol. Opt. Phys. 42, 154021 (2009) | |
Recent developments in ion detection techniques for Penning trap mass spectrometry at Triga-Trap | |
J. Ketelaer, K. Blaum, M. Block, K. Eberhardt, M. Eibach, R. Ferrer, S. George, F. Herfurth, J. Ketter, Sz. Nagy, J. Repp, L. Schweikhard, C. Smorra, S. Sturm, and S. Ulmer | |
Eur. Phys. J. A 42, 311–317 (2009) | |
Older Calculation of electrostatic fields using quasi-Green's functions: application to the hybrid Penning trap | |
J. Verdú, S. Kreim, K. Blaum, H. Kracke, W. Quint, S. Ulmer, and J. Walz | |
New J. Phys. 10, 103009-1 - 103009-23 (2008) | |
Penning trap measurement of the magnetic moment of the antiproton | |
J. Verdú, K. Blaum, S. Djekic, S. Kreim, W. Quint, S. Stahl, S. Ulmer, M. Vogel, J. Walz, G. Werth | |
AIP Conference Proceedings 796, 260-265 (2005) | |
Technical Documents | |
BASE Letter of Intent, BASE Technical Design Report, BASE Annual Reports and BASE future proposal are found on CERN’s document server. | |
BASE – Future Proposal | |
S. Ulmer et al. | |
CERN Document server: https://cds.cern.ch/record/2702758 (2019) | |
This document contains the full future program of the BASE collaboration at CERN, which was approved by CERN’s SPSC committee in January 2020 | |
Technical Design Report BASE | |
S. Ulmer et al. | |
CERN Document server: http://cds.cern.ch/record/1503514 (2013) | |
Letter of Intent: Direct high-precision measurement of the g-factor of a single antiproton stored in a cryogenic Penning trap | |
S. Ulmer et al. | |
CERN Document server: https://cds.cern.ch/record/1455847 (2012) | |
Annual Progress Reports on BASE are available on the CERN Document Server |