Contribution to a conference proceedings/Contribution to a book

PUBDB-2025-02320

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png PolarX-EBIT – a versatile tool for X-ray resonant spectroscopy

Steinbrügge, R. (Corresponding author)Extern* ; Shah, C.Extern* ; Togawa, M.Extern*XFEL.EU* ; Bernitt, S.Extern*

2025
JACoW Publishing Geneva, Switzerland
ISBN: 978-3-95450-239-4

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Please use a persistent id in citations: doi:10.18429/JACOW-EBIST2022-FR3WH03  doi:10.3204/PUBDB-2025-02320

Abstract: Resonant photo-excitation provides a direct tool for investigating electronic transitions in atoms and ions. By combining EBITs and ultrabrilliant x-ray sources this kind of spectroscopy became also available for highly charged ions. Here we present the PolarX-EBIT, a compact permanent magnet EBIT built by the Max-Planck-Institute for Nuclear Physics and University Jena specifically for operation at synchrotron radiation light source facilities. It employs a novel off-axis electron gun, allowing the photon beam to pass through the trap and be made available for downstream setups. Additionally, it features fast-switching power supplies for charge breeding and background reduction schemes, a time-of-flight ion extraction beamline and large area SDD detectors. Multiple successful experiments have been performed in the soft and hard x-ray regimes at the light sources BESSY II and PETRA III, measuring transition energies, oscillator strengths, natural line widths, photoionization and population balance. Furthermore, narrow lines of He-like ions have also been used as a diagnostic tool for the spectral performance of the photon beamlines.

Keyword(s): Accelerator Physics ; 02 - Atomic Spectroscopy of Highly Charged Ions

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Contributing Institute(s):

1. FS DOOR-User (FS DOOR-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: II-20180010 (II-20180010) (II-20180010)
3. FS-Proposal: I-20211620 (I-20211620) (I-20211620)
4. FS-Proposal: I-20190703 (I-20190703) (I-20190703)
5. FS-Proposal: I-20200354 (I-20200354) (I-20200354)
6. FS-Proposal: I-20180534 (I-20180534) (I-20180534)

Experiment(s):

1. PETRA Beamline P04 (PETRA III)
2. PETRA Beamline P01 (PETRA III)

Appears in the scientific report 2025

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