| Zugriffsnummer | 37765 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Highly sensitive superconducting circuits at ˜700 kHz with tunable quality factors for image-current detection of single trapped antiprotons |
| Autor(in); Institution |
Nagahama, Hiroki; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN; University of Tokyo, Graduate School of Arts and Sciences, Tokyo, JAPAN
Schneider, Georg; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN; University of Tokyo, Graduate School of Arts and Sciences, Tokyo, JAPAN; Johannes Gutenberg-Universität, Mainz, GERMANY
Mooser, Andreas; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN
Smorra, Christian; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN; CERN, Geneva, SWITZERLAND
Sellner, Stefan; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN
Harrington, James; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Higuchi, Takashi; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN
Borchert, Matthias; Leibniz Universität, Institut für Quantenoptik, Hannover, GERMANY
Tanaka, Toya; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN; University of Tokyo, Graduate School of Arts and Sciences, Tokyo, JAPAN
Besirli, Mustafa; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN
Blaum, Klaus; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Matsuda,, Yasuyuki; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN; University of Tokyo, Graduate School of Arts and Sciences, Tokyo, JAPAN
Ospelkaus, Christian; QUEST Institute for Experimental Quantum Metrology, PTB-Braunschweig; Leibniz Universität, Institut für Quantenoptik, Hannover, GERMANY
Quint, Wolfgang; Helmholtzzentrum für Schwerionenforschung, Darmstadt, GERMANY
Walz, Jochen; Johannes Gutenberg-Universität, Institut für Physik, Mainz, GERMANY; Helmholtz-Institut, Mainz, GERMANY
Yamazaki, Yasunori; RIKEN, Ulmer Initiative Research Unit, Hyogo, JAPAN
|
| Quelle/Jahr | Review of Scientific Instruments: 87 (2016), 113305 |
| ISSN | 1527-2400 (PRINT) ; 1089-7623 (ONLINE) |
| DOI | |
| Verlag | Lancaster, Pa. [u.a.]: AIP Publishing |
| Freie Schlagworte | superconducting resonator ; Penning trap ; image charge |
| Zusammenfassung | We developed highly sensitive image-current detection systems based on superconducting toroidal coils and ultra-low noise amplifiers for non-destructive measurements of the axial frequencies (550–800 kHz) of single antiprotons stored in a cryogenic multi-Penning-trap system. The unloaded superconducting tuned circuits show quality factors of up to 500 000, which corresponds to a factor of 10 improvement compared to our previously used solenoidal designs. Connected to ultra-low noise amplifiers and the trap system, signal-to-noise-ratios of 30 dB at quality factors of )20 000 are achieved. In addition, we have developed a superconducting switch which allows continuous tuning of the detector’s quality factor and to sensitively tune the particle-detector interaction. This allowed us to improve frequency resolution at constant averaging time, which is crucial for single antiproton spin-transition spectroscopy experiments, as well as improved measurements of the proton-to-antiproton charge-to-mass ratio. |
Zitierung
Nagahama, H., Schneider, G., Mooser, A., Smorra, C., Sellner, S., Harrington, J., Higuchi, T., Borchert, M., Tanaka, T., Besirli, M., Blaum, K., Matsuda,, Y., Ospelkaus, C., Quint, W., Walz, J., & Yamazaki, Y. (2016). Highly sensitive superconducting circuits at ˜700 kHz with tunable quality factors for image-current detection of single trapped antiprotons. Review of Scientific Instruments, 87, 113305. https://doi.org/10.1063/1.4967493