Journal Article

GSI-2024-00075

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png XUV Fluorescence Detection of Laser-Cooled Stored Relativistic Ions

Ueberholz, K. (Corresponding author) ; Bozyk, L.GSI* ; Bussmann, M. ; Eizenhöfer, N. ; Hannen, V. ; Horst, M. H.GSI* ; Kiefer, D. ; Kiefer, N. ; Klammes, S.GSI* ; Kühl, T.GSI* ; Langfeld, B. ; Loeser, M. ; Ma, X. ; Nörtershäuser, W. ; Sanchez Alarcon, R. M.GSI* ; Schramm, U. ; Siebold, M. ; Spiller, P.GSI* ; Steck, M.GSI* ; Stöhlker, T.GSI* ; Walther, T. ; Wang, H. ; Weinheimer, C. ; Wen, W. ; Winters, D.GSI*

2023
MDPI Basel

Please use a persistent id in citations: doi:10.3390/atoms11020039  doi:10.15120/GSI-2024-00075

Abstract: An improved moveable in vacuo XUV fluorescence detection system was employed for the laser cooling of bunched relativistic (𝛽 = 0.47) carbon ions at the Experimental Storage Ring (ESR) of GSI Helmholtzzentrum Darmstadt, Germany. Strongly Doppler boosted XUV fluorescence (∼90 nm) was emitted from the ions in a forward light cone after laser excitation of the 2s–2p transition (∼155 nm) by a new tunable pulsed UV laser system (257 nm). It was shown that the detected fluorescence strongly depends on the position of the detector around the bunched ion beam and on the delay (∼ns) between the ion bunches and the laser pulses. In addition, the fluorescence information could be directly combined with the revolution frequencies of the ions (and their longitudinal momentum spread), which were recorded using the Schottky resonator at the ESR. These fluorescence detection features are required for future laser cooling experiments at highly relativistic energies (up to 𝛾∼ 13) and high intensities (up to 1E11 particles) of ion beams in the new heavy ion synchrotron SIS100 at FAIR.

Note: This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Contributing Institute(s):

1. System Design SIS 100 / SIS 18 (SYS)

Research Program(s):

1. 6G12 - FAIR (GSI) (POF4-6G12) (POF4-6G12)
2. GSI Machine ESR (GSILSFESR) (GSILSFESR)
3. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
4. FAIR Phase-0 - FAIR Phase-0 Research Program (GSI-FAIR-Phase-0) (GSI-FAIR-Phase-0)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2023

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Database coverage:
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