Hannover 2013 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 20: Poster: Precision spectroscopy of atoms and ions (with Q)
A 20.16: Poster
Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof
A low-energy beamline for injection of highly charged ions into a cryogenic Paul trap — Lisa Schmöger1, •Maria Schwarz1,2, Oscar O. Versolato1, Alexander Windberger1, Thomas M. Baumann1, Joachim Ullrich2, and José R. Crespo López-Urrutia1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Physikalisch-Technische Bundesanstalt, Braunschweig
Electron beam ion traps (EBITs)are efficient tools for highly charged ion (HCI) production and studies. However, due to the high ion temperature inside of an EBIT (on the order of MK), laser spectroscopy on HCIs is severely constrained by Doppler broadening [1]. A novel cryogenic Paul trap (CryPTEx) operating at the MPIK [2] will allow for sympathetic cooling of HCIs by 9 orders of magnitude, down to the mK regime, and thus for resolving the natural linewidth of forbidden optical transitions in HCI. A compact beamline for transport, deceleration and transfer of HCIs from Hyper-EBIT into CryPTEx has been designed, built and commissioned at MPIK. Simulations have been performed to optimize the ion optics. The new beamline guides HCIs extracted from an EBIT into CryPTEx in both pulsed and continuous modes. Deceleration and time-focussing of the ion bunches are performed by a drift cavity which also reduces the initial energy spread of the ions. The setup allows for efficient HCI transfer and injection of slow HCIs into the Paul trap.
[1] V. Mäckel et al., Phys. Rev. Lett. 107, 143002 (2011)
[2] M. Schwarz et al., Rev. Sci. Instrum. 83, 083115 (2012)