The Heidelberg compact electron beam ion traps
P. Micke,Steffen Kühn,Lisa Buchauer,J. R. Harries,Thore M. Bücking,Klaus Blaum,A. Cieluch,Alexander Egl,Daniel Hollain,Sandro Kraemer,Thomas Pfeifer,Piet O. Schmidt,Piet O. Schmidt,R. X. Schüssler,Ch. Schweiger,Th. Stöhlker,S. Sturm,Robert Wolf,Sven Bernitt,J. R. Crespo López-Urrutia +19 more
TLDR
A novel, compact, room-temperature design, Heidelberg Compact EBIT, and a novel off-axis gun for laser, synchrotron, and free-electron laser applications, offering clear optical access along the trap axis are implemented.Abstract:
Electron beam ion traps (EBIT) are ideal tools for both production and study of highly charged ions (HCI). In order to reduce their construction, maintenance, and operation costs we have developed a novel, compact, room-temperature design, the Heidelberg Compact EBIT (HC-EBIT). Four already commissioned devices operate at the strongest fields (up to 0.86 T) reported for such EBITs using permanent magnets, run electron beam currents up to 80 mA and energies up to 10 keV. They demonstrate HCI production, trapping, and extraction of pulsed Ar$^{16+}$ bunches and continuous 100 pA ion beams of highly charged Xe up to charge state 29+, already with a 4 mA, 2 keV electron beam. Moreover, HC-EBITs offer large solid-angle ports and thus high photon count rates, e. g., in x-ray spectroscopy of dielectronic recombination in HCIs up to Fe$^{24+}$, achieving an electron-energy resolving power of $E/\Delta E > 1500$ at 5 keV. Besides traditional on-axis electron guns, we have also implemented a novel off-axis gun for laser, synchrotron, and free-electron laser applications, offering clear optical access along the trap axis. We report on its first operation at a synchrotron radiation facility demonstrating resonant photoexcitation of highly charged oxygen.read more
Citations
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Highly charged ions: Optical clocks and applications in fundamental physics
TL;DR: In this article, a review discusses how a variety of ion species and transitions may optimally be used to target new applications, and presents routes to handle them in the laboratory, as well as how to handle ion species for precision spectroscopy and accurate clocks.
Journal ArticleDOI
Coherent laser spectroscopy of highly charged ions using quantum logic
P. Micke,P. Micke,T. Leopold,S. A. King,Erik Benkler,L. J. Spieß,Lisa Schmöger,Lisa Schmöger,M. Schwarz,M. Schwarz,J. R. Crespo López-Urrutia,Piet O. Schmidt,Piet O. Schmidt +12 more
TL;DR: In this article, a trapped HCI is cooled to the lowest reported temperatures, and coherent laser spectroscopy on HCI with an eight orders of magnitude leap in precision is presented.
Journal ArticleDOI
The Search for Variation of Fundamental Constants with Clocks
Highly Charged Ions in Magnetic Fusion Plasmas: Research Opportunities and Diagnostic Necessities
TL;DR: In this article, the authors show that the highly charged ions of several elements are of special current interest to magnetic fusion, notably highly charged ion of argon, iron, krypton, xenon, and foremost of tungsten.
Journal ArticleDOI
A cryogenic radio-frequency ion trap for quantum logic spectroscopy of highly charged ions.
T. Leopold,S. A. King,P. Micke,A. Bautista-Salvador,Jan C. Heip,Christian Ospelkaus,José R. Crespo López-Urrutia,Piet O. Schmidt +7 more
TL;DR: In this paper, a radio-frequency ion trap system designed for quantum logic spectroscopy of highly charged ions is presented, which includes a segmented linear Paul trap, an in-vacuum imaging lens and a helical resonator.
References
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