A digital feedback system for advanced ion manipulation techniques in Penning traps

• Verfasst von: Herkenhoff, Jost [VerfasserIn]
• Verfasst von: Door, Menno [VerfasserIn]
• Verfasst von: Filianin, Pavel [VerfasserIn]
• Verfasst von: Huang, Wenjia [VerfasserIn]
• Verfasst von: Kromer, Kathrin [VerfasserIn]
• Verfasst von: Lange, Daniel [VerfasserIn]
• Verfasst von: Schüßler, Rima [VerfasserIn]
• Verfasst von: Schweiger, Christoph [VerfasserIn]
• Verfasst von: Eliseev, Sergey [VerfasserIn]
• Verfasst von: Blaum, Klaus [VerfasserIn]
• Titel: A digital feedback system for advanced ion manipulation techniques in Penning traps
• Verf.angabe: Jost Herkenhoff, Menno Door, Pavel Filianin, Wenjia Huang, Kathrin Kromer, Daniel Lange, Rima X. Schüssler, Christoph Schweiger, Sergey Eliseev, and Klaus Blaum
• E-Jahr: 2021
• Jahr: 4 October 2021
• Umfang: 11 S.
• Fussnoten: Gesehen am 09.02.2022
• Titel Quelle: Enthalten in: Review of scientific instruments
• Ort Quelle: [Melville, NY] : AIP Publishing, 1930
• Jahr Quelle: 2021
• Band/Heft Quelle: 92(2021), 10, Artikel-ID 103201, Seite 1-11
• ISSN Quelle: 1089-7623
• DOI: doi:10.1063/5.0064369
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: antiproton
• Sach-SW: electron
• Sach-SW: mass
• Sach-SW: single-ion
• Sach-SW: thermal agitation
• K10plus-PPN: 1789081890

Abstract

The possibility of applying active feedback to a single ion in a Penning trap using a fully digital system is demonstrated. Previously realized feedback systems rely on analog circuits that are susceptible to environmental fluctuations and long term drifts, as well as being limited to the specific task they were designed for. The presented system is implemented using a field-programmable gate array (FPGA)-based platform (STEMlab), offering greater flexibility, higher temporal stability, and the possibility for highly dynamic variation of feedback parameters. The system's capabilities were demonstrated by applying feedback to the ion detection system primarily consisting of a resonant circuit. This allowed shifts in its resonance frequency of up to several kHz and free modification of its quality factor within two orders of magnitude, which reduces the temperature of a single ion by a factor of 6. Furthermore, a phase-sensitive detection technique for the axial ion oscillation was implemented, which reduces the current measurement time by two orders of magnitude, while simultaneously eliminating model-related systematic uncertainties. The use of FPGA technology allowed the implementation of a fully-featured data acquisition system, making it possible to realize feedback techniques that require constant monitoring of the ion signal. This was successfully used to implement a single-ion self-excited oscillator.