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The SPES Laser Ion Source: Time Structure and Laser Enhancement Measurements with Sm$^{+}$ beam
/ Khwairakpam, O S (Siena U. ; INFN, Legnaro) ; Mancheva, R (CERN ; KU Leuven, Dept. Phys. Astron.) ; Au, M (CERN) ; Bernerd, C (CERN ; KU Leuven, Dept. Phys. Astron.) ; Centofante, L (INFN, Legnaro) ; Chrysalidis, K (CERN) ; Crepieux, B (CERN) ; Fedosseev, V N (CERN) ; Heinke, R (CERN) ; Marchi, T (INFN, Legnaro) et al.
A two-step resonance photo-ionization scheme has been used to ionize samarium atoms in the SPES tantalum hot-cavity ion source. The effect of the ion load on the ion beam time structure and the laser enhancement of the ion yield has been studied at different ion source temperatures. [...]
2024 - 6 p.
- Published in : J. Phys. : Conf. Ser. 2743 (2024) 012066
Fulltext: PDF;
In : 20th International Conference on Ion Sources (ICIS 2023), Victoria, BC, Canada, 17 - 22 Sep 202, pp.012066
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Stable 500 kW average power of infrared light in a finesse 35 000 enhancement cavity
/ Lu, X -Y (IJCLab, Orsay ; Tsinghua U., Beijing, Dept. Eng. Phys.) ; Chiche, R (IJCLab, Orsay) ; Dupraz, K (IJCLab, Orsay) ; Johora, F (IJCLab, Orsay) ; Martens, A (IJCLab, Orsay) ; Nutarelli, D (IJCLab, Orsay) ; Peinaud, Y (IJCLab, Orsay) ; Soskov, V (IJCLab, Orsay) ; Stocchi, A (IJCLab, Orsay) ; Zomer, F (IJCLab, Orsay) et al.
Advances in laser technology over the past 25 years have been impressive, in particular, for the Ytterbium technology where, nowadays, kilowatt-class laser systems are available. This technology also led to the possibility to provide hundreds of kilowatts of laser power by the use of enhancement cavities. [...]
2024 - 7 p.
- Published in : Appl. Phys. Lett. 124 (2024) 251105
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Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN
/ Jajčišinová, E (Geel, JRC ; Leuven U.) ; Dockx, K (Leuven U.) ; Au, M (CERN) ; Bara, S (Leuven U.) ; Cocolios, T E (Leuven U.) ; Chrysalidis, K (CERN) ; Farooq‑Smith, G J (Leuven U. ; Edinburgh U.) ; Fedorov, D V (Unlisted) ; Fedosseev, V N (CERN) ; Flanagan, K T (Manchester U.) et al.
The presented paper discusses the production of radioactive ion beams of francium, radium, and actinium from thick uranium carbide (UC$_{x}$) targets at ISOLDE, CERN. This study focuses on the release curves and extractable yields of francium, radium and actinium isotopes. [...]
2024 - 9 p.
- Published in : Sci. Rep. 14 (2024) 11033
Fulltext: PDF;
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CERN-MEDICIS: Operational indicators to support the production of new medical radionuclides by mass-separation
/ Stora, T (CERN) ; Duchemin, C (CERN) ; Andreazza, W (CERN) ; Aubert, E (CERN) ; Bernerd, C (CERN ; Leuven U.) ; Cocolios, T (Leuven U.) ; Deschamps, M (CERN) ; Dorsival, A (CERN) ; Duraffourg, M (CERN) ; Fedosseev, V (CERN) et al.
CERN-MEDICIS is an isotope mass separation facility for biomedical R&D; located in a class A laboratory, receiving up to 50% of the 1.4GeV PSB protons. It was commissioned with radioactive ion beams in 2017. [...]
2023 - 6 p.
- Published in : J. Phys. : Conf. Ser.: 2687 (2024) , no. 8, pp. 082039
- Published in : JACoW IPAC: 2023 (2023) , pp. WEPM125
Fulltext: PublicationJACoW - PDF; PublicationIOP - PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.082039
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Benchmark evaluation of a single frequency continuous wave OPO seeded pulsed dye amplifier for high-resolution laser spectroscopy
/ Urquiza-González, M (Unlisted, DE) ; Au, M (CERN ; Mainz U.) ; Bernerd, C (Leuven U.) ; Bissell, M (Manchester U.) ; van den Borne, B (Leuven U.) ; Chrysalidis, K (CERN) ; Cocolios, T E (Leuven U.) ; Fedosseev, V N (CERN) ; Flanagan, K T (Manchester U.) ; Garcia Ruiz, R G (MIT) et al.
The study of the atomic spectrum via resonant laser excitation provides access to underlying effects caused by the nuclear structure, which is of special interest in short-lived radioisotopes produced at Isotope Separator On-Line (ISOL) facilities. Current implementations of resonant laser ionization techniques often limit the extraction of the nuclear observables due to the low spectral resolution of the pulsed laser systems deployed. [...]
2023
- Published in : Proc. SPIE 12399 (2023) 123990M
In : 26th Solid State Lasers XXXII: Technology and Devices (SPIE LASE), San Fancisco, CA, USA, 28 Jan - 3 Feb 2023, pp.123990M
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Hot electron enhanced photoemission from laser fabricated plasmonic photocathodes
/ Martinez-Calderon, Miguel (CERN) ; Groussin, Baptiste (CERN) ; Bjelland, Victoria (CERN ; Norwegian U. Sci. Tech.) ; Chevallay, Eric (CERN) ; Fedosseev, Valentin N (CERN) ; Himmerlich, Marcel (CERN) ; Lorenz, Pierre ; Manjavacas, Alejandro ; Marsh, Bruce A (CERN) ; Neupert, Holger (CERN) et al.
Photocathodes are key elements in high-brightness electron sources and ubiquitous in the operation of large-scale accelerators, although their operation is often limited by their quantum efficiency and lifetime. Here, we propose to overcome these limitations by utilizing direct-laser nanostructuring techniques on copper substrates, improving their efficiency and robustness for next-generation electron photoinjectors. [...]
2023 - 9 p.
- Published in : 10.1515/nanoph-2023-0552
Fulltext: PDF;
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