CERN Accelerating science

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1.
An alexandrite laser system for positronium laser cooling / Gusakova, N (CERN ; Norwegian U. Sci. Tech.) ; Camper, A (Oslo U.) ; Caravita, R (Trento U. ; INFN, Trento) ; Penasa, L (Trento U. ; INFN, Trento ; U. Trento (main)) ; Glöggler, L T (CERN) ; Wolz, T (CERN) ; Krumins, V (CERN ; Latvia U.) ; Gustafsson, F P (CERN) ; Huck, S (CERN ; Hamburg U.) ; Volponi, M (CERN ; Trento U. ; INFN, Trento ; U. Trento (main)) et al.
We report on a Q-switched alexandrite based ∼100ns long pulse duration ultra-violet laser system. The central wavelength of the fundamental pulse is set by a Volume Bragg Grating in reflection and can be tuned between 728nm and 742nm. [...]
2024 - 8 p. - Published in : Opt. Laser Technol. 182 (2025) 112097 Fulltext: PDF;
2.
TALOS (Total Automation of LabVIEW Operations for Science): A framework for autonomous control systems for complex experiments / Volponi, M. (CERN ; Trento U. ; INFN, Trento) ; Zielinski, J. (Warsaw U. of Tech.) ; Rauschendorfer, T. (CERN ; Leipzig U.) ; Huck, S. (CERN ; Hamburg U.) ; Caravita, R. (Trento U. ; INFN, Trento) ; Auzins, M. (CERN ; Latvia U.) ; Bergmann, B. (Prague, Tech. U.) ; Burian, P. (Prague, Tech. U.) ; Brusa, R.S. (Trento U. ; INFN, Trento) ; Camper, A. (Oslo U.) et al.
Modern physics experiments are frequently very complex, relying on multiple simultaneous events to happen in order to obtain the desired result. The experiment control system plays a central role in orchestrating the measurement setup: However, its development is often treated as secondary with respect to the hardware, its importance becoming evident only during the operational phase. [...]
arXiv:2409.01058.- 2024-08-01 - 22 p. - Published in : Rev. Sci. Instrum. 95 (2024) 085116 Fulltext: 2409.01058 - PDF; Publication - PDF;
3.
CIRCUS: an autonomous control system for antimatter, atomic and quantum physics experiments / AEgIS Collaboration
A powerful and robust control system is a crucial, often neglected, pillar of any modern, complex physics experiment that requires the management of a multitude of different devices and their precise time synchronisation. The AEgIS collaboration presents CIRCUS, a novel, autonomous control system optimised for time-critical experiments such as those at CERN's Antiproton Decelerator and, more broadly, in atomic and quantum physics research. [...]
arXiv:2402.04637.- 2024-02-15 - 35 p. - Published in : EPJ Quant. Technol. 11 (2024) 10 Fulltext: document - PDF; 2402.04637 - PDF;
4.
Positronium Laser Cooling via the <math display="inline"><mrow><msup><mrow><mn>1</mn></mrow><mrow><mn>3</mn></mrow></msup><mi>S</mi><mtext>-</mtext><msup><mrow><mn>2</mn></mrow><mrow><mn>3</mn></mrow></msup><mi>P</mi></mrow></math> Transition with a Broadband Laser Pulse / AEḡIS Collaboration
We report on laser cooling of a large fraction of positronium (Ps) in free-flight by strongly saturating the $1^3S$-$2^3P$ transition with a broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced in a magnetic and electric field-free environment. [...]
arXiv:2310.08760.- 2024-02-22 - 7 p. - Published in : Phys. Rev. Lett. 132 (2024) 083402 Fulltext: 2310.08760 - PDF; Publication - PDF; External links: Physics Synopsis; Interactions.org article
5.
Pulsed Production of Antihydrogen in AEgIS / AEgIS Collaboration
Cold antihydrogen atoms are a powerful tool to probe the validity of fundamental physics laws, and it's clear that colder atoms, generally speaking, allow an increased level of precision. After the first production of cold antihydrogen ($\bar{H}$) in 2002, experimental efforts have progressed continuously (trapping, beam formation, spectroscopy), with competitive results already achieved by adapting to cold antiatoms techniques previously well developed for ordinary atoms. Unfortunately, the number of $\bar{H}$ atoms that can be produced in dedicated experiments is many orders of magnitude smaller than available hydrogen atoms, which are at hand in large amount, so the development of novel techniques that allow the production of $\bar{H}$ with well defined conditions (and possibly control its formation time and energy levels) is essential to improve the sensitivity of the methods applied by the different experiments. We present here the first experimental results concerning the production of $\bar{H}$ in a pulsed mode where the time when 90\% of the atoms are produced is known with an uncertainty of around 250~ns. [...]
2022 - 7 p. - Published in : PoS DISCRETE2020-2021 (2022) 079 Fulltext: PDF;
In : 7th Symposium on Prospects in the Physics of Discrete Symmetries (DISCRETE 2020-2021), Bergen, Norway, 29 Nov - 3 Dec 2021, pp.079
6.
Development of a detector for inertial sensing of positronium at AEḡIS (CERN) / AEgIS Collaboration
The primary goal of the AEgIS collaboration at CERN is to measure the gravitational acceleration on neutral antimatter. Positronium (Ps), the bound state of an electron and a positron, is a suitable candidate for a force-sensitive inertial measurement by means of deflectometry/interferometry. [...]
2022 - 4 p. - Published in : J. Phys. : Conf. Ser. 2374 (2022) 012037 Fulltext: PDF;
In : International Conference on Technology and Instrumentation in Particle Physics (TIPP 2021), Online, Canada, 24 - 29 May 2021, pp.012037
7.
Control system for ion Penning traps at the AEgIS experiment at CERN / Nowicka, D (Warsaw U. of Tech.) ; Bergmann, B (Prague, Tech. U.) ; Bonomi, G (Brescia U. ; INFN, Brescia ; INFN, Pavia) ; Brusa, R S (TIFPA-INFN, Trento ; Trento U.) ; Burian, P (Prague, Tech. U.) ; Camper, A (Oslo U.) ; Caravita, R (TIFPA-INFN, Trento ; Trento U.) ; Castelli, F (Milan U. ; INFN, Milan) ; Cheinet, P (LAC, Orsay) ; Comparat, D (LAC, Orsay) et al.
The AEgIS experiment located at the Antiproton Decelerator at CERN aims to measure the gravitational fall of a cold antihydrogen pulsed beam. The precise observation of the antiatoms in the Earth gravitational field requires a controlled production and manipulation of antihydrogen. [...]
2022 - 5 p. - Published in : J. Phys. : Conf. Ser. 2374 (2022) 012038 Fulltext: PDF;
In : International Conference on Technology and Instrumentation in Particle Physics (TIPP 2021), Online, Canada, 24 - 29 May 2021, pp.012038
8.
Development of a Position-Sensitive Detector for Positronium Inertial Sensing Measurements / Mariazzi, S (Trento U. ; TIFPA-INFN, Trento) ; Caravita, R (TIFPA-INFN, Trento) ; Glöggler, L (CERN ; Berlin, Tech. U.) ; Povolo, L (Trento U. ; TIFPA-INFN, Trento) ; Penasa, L (Trento U. ; TIFPA-INFN, Trento) ; Sharma, S (TIFPA-INFN, Trento ; Jagiellonian U. ; Jagiellonian U. (main)) ; Moskal, P (Jagiellonian U. ; Jagiellonian U. (main)) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento)
In the last twenty years, both free fall and interferometry/deflectometry experiments have been proposed for the measurement of the gravitational acceleration on positronium, which is a purely leptonic matter-antimatter atom formed by an electron and its antiparticle (positron). Among the several challenges posed by these experiments is the development of position-sensitive detectors to measure the deflection of positronium in the Earth's gravitational field. [...]
2022 - 5 p. - Published in : Acta Phys. Pol. A 142 (2022) 319-323 Fulltext: PDF;
In : 4th Jagiellonian Symposium on Advances in Particle Physics and Medicine, Kraków, Poland, 10 - 15 Jul 2022, pp.319-323
9.
AE$\overline{g}$IS latest results / Guatieri, F (TIFPA-INFN, Trento ; Trento U.) ; Aghion, S (Milan, Polytech. ; Bern U., LHEP) ; Amsler, C (Stefan Meyer Inst. Subatomare Phys.) ; Angela, G (Bern U., LHEP) ; Bonomi, G (Norwegian U. Sci. Tech. ; INFN, Pavia ; Pavia U.) ; Brusa, R S (TIFPA-INFN, Trento ; Trento U.) ; Caccia, M (U. Brussels (main) ; Milan U. ; INFN, Brescia) ; Caravita, R (Genoa U. ; INFN, Genoa) ; Castelli, F (U. Brussels (main) ; Milan U.) ; Cerchiari, G (Heidelberg, Max Planck Inst.) et al.
The validity of the Weak Equivalence Principle (WEP) as predicted by General Relativity has been tested up to astounding precision using ordinary matter. The lack hitherto of a stable source of a probe being at the same time electrically neutral, cold and stable enough to be measured has prevented highaccuracy testing of the WEP on anti-matter. [...]
2018 - 7 p. - Published in : EPJ Web Conf. 181 (2018) 01037 Fulltext: PDF;
In : International Conference on Exotic Atoms and Related Topics (EXA 2017), Vienna, Austria, 11 - 15 Sep 2017, pp.01037
10.
Experiments with mid-heavy antiprotonic atoms in AE$\overline{g}$IS / AEgIS Collaboration
ments which provide the most precise data on the strong interaction between protons and antiprotons and of the neutron skin of many nuclei thanks to the clean annihilation signal. In most of these experiments, the capture process of low energy antiprotons was done in a dense target leading to a significant suppression of specific transitions between deeply bound levels that are of particular interest. [...]
2022 - 6 p. - Published in : PoS PANIC2021 (2022) 446 Fulltext: PDF;
In : 22nd Particles and Nuclei International Conference (PANIC 2021), Lisbon, Portugal, 5 - 10 Sep 2021, pp.446

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