First steps in the development of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy

Sels, S.; Fischer, Paul; Heylen, H.; Lagaki, V.; Lechner, S.; Maier, F.M.; Plattner, P.; Rosenbusch, M.; Wienholtz, F.; Wolf, R.; Nörtershäuser, W.; Schweikhard, L.; Malbrunot-Ettenauer, S.

doi:10.1016/j.nimb.2019.04.076

Cited by 16 publications

(5 citation statements)

References 36 publications

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“…The purified ion bunch is then accumulated and cooled in a RFQ cooler-buncher before the ion package is injected into the PUMA trap. For this purpose, a new linear quadrupole radio-frequency cooler-buncher will be commissioned which was developed by the collaboration of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRA-CLS) [227] and build at the TU Darmstadt. Previous experiences with linear Paul traps using buffer gas cooling, e.g.…”

Section: Ion Sourcementioning

confidence: 99%

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PUMA, antiProton unstable matter annihilation

Obertelli¹

2022

Eur. Phys. J. A

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PUMA, antiProton Unstable Matter Annihilation, is a nuclear-physics experiment at CERN aiming at probing the surface properties of stable and rare isotopes by use of low-energy antiprotons. Low-energy antiprotons offer a very unique sensitivity to the neutron and proton densities at the annihilation site, i.e. in the tail of the nuclear density. Today, no facility provides a collider of low-energy radioactive ions and low-energy antiprotons: while not being a collider experiment, PUMA aims at transporting one billion antiprotons from ELENA, the Extra-Low-ENergy Antiproton ring, to ISOLDE, the rare-isotope beam facility of CERN. PUMA will enable the capture of low-energy antiprotons by short-lived nuclei and the measurement of the emitted radiations. In this way, PUMA will give access to the so-far largely unexplored isospin composition of the nuclear-radial-density tail of radioactive nuclei. The motivations, concept and current status of the PUMA experiment are presented.

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Section: Ion Sourcementioning

confidence: 99%

“…They are summarized in Table 14. These requirements can be achieved with a system similar to the ongoing MIRACLS [227,234] project, downstream the ISCOOL buncher [235]. The two apparatus are introduced, and their current status of development is given.…”

Section: General Overviewmentioning

confidence: 99%

PUMA, antiProton unstable matter annihilation

Obertelli¹

2022

Eur. Phys. J. A

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“…A related recent development aiming at laser spectroscopy using an ion manipulation device is the MIRACLS project [295]. In this method a multi-reflection time-of-flight mass spectrometer (MR-ToF-MS) is used for a variant of collinear laser spectroscopy.…”

Section: Laser Spectroscopy In Ion Trapsmentioning

confidence: 99%

Recent progress in laser spectroscopy of the actinides

Block,

Laatiaoui,

Raeder

2020

Preprint

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The interest to perform laser spectroscopy in the heaviest elements arises from the strong impact of relativistic effects, electron correlations and quantum electrodynamics on their atomic structure. Once this atomic structure is well understood, laser spectroscopy also provides access to nuclear properties such as spins, mean square charge radii and electromagnetic moments in a nuclear-model independent way. This is of particular interest for the heaviest actinides around N = 152, a region of shell-stabilized deformed nuclei. The experimental progress of laser spectroscopy in this region benefitted from continuous methodological and technical developments such as the introduction of buffer-gas-stopping techniques that enabled the access to ever more exotic nuclei far-off stability. The key challenges faced in this endeavor are small yields, nuclides with rather short half-lives and the need to search for atomic transitions in a wide spectral range guided by theoretical predictions. This paper describes the basics of the most common experimental methods and discusses selected recent results on the atomic and nuclear properties of the actinides up to nobelium where pioneering experiments were performed at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany.

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“…1. It is an EIBT setup originally described in [20] which has been modified for the purpose of collinear laser spectroscopy [3].…”

Section: Experimental Apparatusmentioning

confidence: 99%

“…However, in order to access the most exotic nuclides produced with very low yields at radioactive ion beam facilities, methods with higher sensitivity have to be developed. To this end, the novel Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS) [3] is currently being built at ISOLDE/CERN [4]. It aims to combine the high spectral resolution of conventional collinear laser spectroscopy (based on the detection of the photons after resonant excitation) with high experimental sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps

et al. 2019

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In the development towards the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS), an optical detection region for the observation of fluorescent light is added to an electrostatic ion beam trap (EIBT). In addition to its use for highly sensitive collinear laser spectroscopy, this fluorescence detection is introduced as a diagnostics tool for the study of the ion dynamics inside an EIBT. First measurements of collision-induced fluorescence in an EIBT demonstrate the technique's diagnostics power by tracking the evolution of an ion bunch's temporal width over its storage time inside the ion trap. Thereby, the time-focus point of the ion bunch can be determined and the influence of space-charge effects in the EIBT can be investigated. Good qualitative agreement is obtained between the measured trend of temporal widths and the simulations of the ions' trajectories in the trap. Particularly, the observation of self-bunching on the ion-bunch structure for many simultaneously stored ions is reproduced.

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First steps in the development of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy

Cited by 16 publications

References 36 publications

PUMA, antiProton unstable matter annihilation

PUMA, antiProton unstable matter annihilation

Recent progress in laser spectroscopy of the actinides

Fluorescence detection as a new diagnostics tool for electrostatic ion beam traps

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