SAMOP 2023 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 13: Highly Charged Ions and their Applications I
A 13.7: Vortrag
Mittwoch, 8. März 2023, 12:45–13:00, F107
Cryogenic fast-opening valve at the ARTEMIS experiment at GSI in Darmstadt — •Bianca Reich1,2, Khwaish Anjum1,3, Patrick Baus4, Gerhard Birkl4, Manasa Chambath1,5, Jan Hellmann1,6, Kanika Kanika1,2, Jeffrey Klimes1,2, Arya Krishnan1,4, Wolfgang Quint1,2, Wolfgang Schott1,7, and Manuel Vogel1 — 1GSI Helmholtz Center for Heavy Ion Research, Germany — 2University of Heidelberg, Germany — 3University of Jena, Germany — 4Technical University of Darmstadt, Germany — 5NITTE University, India — 6University of Giessen, Germany — 7Technical University of Munich, Germany
The ARTEMIS experiment at the HITRAP facility at GSI in Darmstadt aims to measure the g-factor of an electron bound to a highly charged ion by performing laser-microwave double-resonance spectroscopy. To separate the Penning trap at liquid-helium temperature to a room-temperature low-energy beamline for dynamic capture of externally produced ions a cryogenic fast-opening valve was conceived, built and implemented. The main advantage of the valve is the remote-controlled operation within sub-second times without disturbing the magnetic field of the trap. It keeps the ambient conditions inside the trap stable by effectively shielding heat radiation and separating the beamline vacuum with several 10−10 mbar from the cryogenic vacuum of the Penning trap with better than 10−16 mbar in a completely sealed state and better than 10−14 mbar when the valve is operated. Whereby the pressure inside the trap is estimated from the lifetime of the captures ions. The design and measurements will be presented.