The new Stockholm Electron Beam Ion Trap (S-EBIT)

Schuch, R.; Tashenov, S.; Orbán, Istvan; Hobein, Matthias; Mahmood, Sultan; Kamalou, O.; Akram, Muhammad Nadeem; Ali, Safdar; Skog, Patrik; Solders, Andreas; Zhang, Hongqiang

doi:10.1088/1748-0221/5/12/c12018

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…The entire drift tube assembly is placed on an adjustable high-voltage platform, which had a maximum potential of +30 kV at the time of the measurements presented here. An upgrade of the system to a total electron energy of 260 keV is discussed in another publication in the present journal (see [2]).…”

Section: Overview Of the Stockholm R-ebitmentioning

confidence: 95%

Optimization of the Stockholm R-EBIT for production and extraction of highly charged ions

Hobein¹,

Orbán²,

Böhm³

et al. 2010

J. Inst.

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We describe a refrigerated EBIT (R-EBIT) commissioned at the AlbaNova Research Center at Stockholm University. As an innovative solution, the superconducting magnet and the trapping drift tubes of the R-EBIT are cooled to a temperature of 4 K by a set of two cooling heads connected to helium compressors. This dry, i.e. liquid helium and liquid nitrogen free, system is easily operated and creates highly charged ions at a fraction of the cost of traditional liquid-cooled systems. A pulsed and continuous gas injection system was developed to feed neutral particles into the electron beam in the trap region. This improves significantly the highly charged ion production and R-EBIT performance. Fast extraction of ions from the R-EBIT yields very short ( < 100 ns), charge-separated ion bunches which can be either analysed using a straight time-of-flight section or sent to experimental beam lines following selection in a bending magnet. An emittance meter was used to measure the emittance of the ions extracted from the R-EBIT. The extracted ions were also re-trapped in a cylindrical Penning trap and properties of the re-trapped ions have been measured using the emittance meter. Results of these measurements are reported in this publication.

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Section: Overview Of the Stockholm R-ebitmentioning

confidence: 95%

Optimization of the Stockholm R-EBIT for production and extraction of highly charged ions

Hobein¹,

Orbán²,

Böhm³

et al. 2010

J. Inst.

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“…X-ray emissions resulting from the continuous interaction of the trapped ions with the electron beam can be observed through a total of eight viewports around the approximately 2 cm long iontarget. Overall, electron densities up to 1 × 10 11 cm −3 and ion densities of 1 × 10 9 cm −3 can be achieved [27]. The element to be measured can be brought into the system via a dedicated gas-injection system [26].…”

Section: Ion Trap: S-ebit-imentioning

confidence: 99%

Application of a metallic-magnetic calorimeter for high-resolution x-ray spectroscopy of Fe at an EBIT

Herdrich,

Hengstler,

Allgeier

et al. 2024

J. Phys. B: At. Mol. Opt. Phys.

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In this work, we present an experiment conducted at the S-EBIT-I ion trap of GSI. It involved the study of ion-electron collisions of Fe and Ba ions in various charge states with the electron beam. Characteristic X-ray radiation emitted during the continuous interaction was recorded utilizing an energy-dispersive maXs-30 detector based on metallic-magnetic calorimeter (MMC) technology. Optimizations to the applied gain-drift correction and energy calibration procedures significantly improved the achieved energy resolution compared to previous applications of a similar detector. This made it possible to individually resolve and identify overlapping X-ray lines of iron and barium in a wide spectral range. As a demonstration of the outstanding detector performance, we used the recorded spectral data to extract an estimate of the charge state distribution of Fe ions in the trap. This experiment campaign marks an important milestone in the ongoing effort to enable the deployment of MMC detectors for future high-precision measurements in fundamental physics experiments.

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“…Taking that into account, the measurement candidates include fine structure transitions in medium-heavy systems like Ar 13+ and Ca 14+ produced locally, as well as hyperfine structure transitions in Bi 80+,82+ produced by the GSI accelerator complex and decelerated by the HITRAP facility [23]. Alternatively, highly charged heavy ions can be extracted from the so-called S-EBIT [24], on loan from Helmholtz Institute Jena and currently under construction at HITRAP. It will be connected directly to the existing HITRAP infrastructure and together with the existing EBIT, it will provide medium heavy and heavy highly charged ions, independent of the accelerator beamtime at GSI, thus helping to bridge the shutdown period necessary for the construction of FAIR [25].…”

Section: Laser Spectroscopy Of Highly Charged Ionsmentioning

confidence: 99%

Status of deceleration and laser spectroscopy of highly charged ions at HITRAP

et al. 2015

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Heavy few-electron ions are relatively simple systems in terms of electron structure and offer unique opportunities to conduct experiments under extremely large electromagnetic fields that exist around their nuclei. However, the preparation of highly charged ions (HCI) has remained the major challenge for experiments. As an extension of the existing GSI accelerator facility, the HITRAP facility was conceived as a multi-stage decelerator for HCI produced at high velocity. It is designed to prepare bunches of around 10 5 HCI and to deliver them at low energies to various experiments. One of these experiments is SpecTrap, aiming for laser spectroscopy of trapped, cold HCI. We present the latest results on deceleration of ions in a radio-frequency quadrupole, synchrotron cooling of electrons in a trap as a preparation step for the prospective electron cooling of the HCI decelerated in HITRAP, as well as laser cooling of singly charged Mg ions for sympathetic cooling of HCI in SpecTrap.

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The new Stockholm Electron Beam Ion Trap (S-EBIT)

Cited by 10 publications

References 18 publications

Optimization of the Stockholm R-EBIT for production and extraction of highly charged ions

Optimization of the Stockholm R-EBIT for production and extraction of highly charged ions

Application of a metallic-magnetic calorimeter for high-resolution x-ray spectroscopy of Fe at an EBIT

Status of deceleration and laser spectroscopy of highly charged ions at HITRAP

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