CERN Accelerating science

CERN Document Server 6 záznamov nájdených  Hľadanie trvalo 0.58 sekúnd. 
1.
Correlation of H$^{-}$ beam properties to Cs-coverage / Lettry, J (CERN) ; Vnuchenko, A (CERN) ; Bertolo, S (CERN) ; Mastrostefano, C (CERN) ; O'Neil, M (CERN) ; di Lorenzo, F (CERN) ; Coutron, Y (CERN) ; Steyeart, D (CERN) ; Riffaud, B (CERN) ; Thiboud, J (CERN) et al.
A caesiated RF driven source delivers H$^{-}$ ions that, after stripping at the end of the 160 MeV H$^{-}$ linear injector, provides protons to CERN's accelerator complex including LHC, where the protons reached a record energy of 6.8 TeV. In Caesiated RF sources, H$^{-}$ ions are produced via dissociative attachment of electrons onto roto-vibrationally excited H$_{2}$-molecules (volume) and re-emission as negative ions of protons or hydrogen atoms colliding on a low work function caesiated molybdenum plasma electrode (surface). [...]
2023 - 10 p. - Published in : JINST 18 (2023) C06023
In : 8th International symposium on Negative Ions, Beams and Sources (NIBS'22), Padua, Italy, 2 - 7 Oct 2022, pp.C06023
2.
Intruder configurations in $^{29}$Ne at the transition into the island of inversion: Detailed structure study of $^{28}$Ne / Wang, H. (RIKEN (main)) ; Yasuda, M. (Tokyo Inst. Tech.) ; Kondo, Y. (Tokyo Inst. Tech.) ; Nakamura, T. (Tokyo Inst. Tech.) ; Tostevin, J.A. (Tokyo Inst. Tech. ; Surrey U.) ; Ogata, K. (Kyushu U., Fukuoka (main) ; Osaka U., Res. Ctr. Nucl. Phys.) ; Otsuka, T. (CERN ; Nishina Ctr., RIKEN) ; Poves, A. (Madrid, Autonoma U.) ; Shimizu, N. (Tsukuba U.) ; Yoshida, K. (JAEA, Ibaraki) et al.
Detailed $\gamma$-ray spectroscopy of the exotic neon isotope $^{28}$Ne has been performed for the first time using the one-neutron removal reaction from $^{29}$Ne on a liquid hydrogen target at 240~MeV/nucleon. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for $^{28}$Ne and the negative-parity states are identified for the first time. [...]
arXiv:2306.16189.- 2023-06-20 - 11 p. - Published in : Phys. Lett. B 843 (2023) 138038 Fulltext: PDF;
3.
H$^-$ Beam formation simulation in negative ion source for CERN's Linac4 accelerator / Vnuchenko, Anna (CERN) ; Lettry, Jacques (CERN) ; Mochalskyy, Serhiy (Garching, Max Planck Inst. Plasmaphys.) ; Wünderlich, Dirk (Garching, Max Planck Inst. Plasmaphys.) ; Fantz, Ursel (LPGP, Orsay) ; Lindqvist, Max (Garching, Max Planck Inst. Plasmaphys.) ; Revel, Adrien (LPGP, Orsay) ; Minea, Tiberiu (LPGP, Orsay)
The caesiated surface negative ion source is the first element of CERN's LINAC4 a linear injector designed to accelerate negative hydrogen ions to 160 MeV. The IS03 ion source is operated at 35 mA beam intensity and reliably feeds CERN's accelerator chain, H- ions are generated via plasma volume and caesiated molybdenum plasma electrode surface mechanisms. [...]
arXiv:2301.13717.- 2023-08-01 - 9 p. - Published in : JINST 18 (2023) C08001 Fulltext: document - PDF; 2301.13717 - PDF;
4.
Beam Formation Studies on the CERN IS03b H$^-$ Source / Lettry, J (CERN) ; Vnuchenko, A (CERN) ; Bertolo, S (CERN) ; Mastrostefano, C (CERN) ; O’Neil, M (CERN) ; di Lorenzo, F (CERN) ; Coutron, Y (CERN) ; Steyeart, D (CERN) ; Riffaud, B (CERN) ; Thiboud, J (CERN) et al.
An H$^{-}$ ion source is being operated at the new 160 MeV linear injector (Linac4) of the CERN accelerator complex. The source’s plasma is of the Radio Frequency Inductively Coupled Plasma type (RF-ICP), without magnetic cusp and runs with Cs-loss compensation 1 . [...]
2022 - 5 p. - Published in : J. Phys. : Conf. Ser. 2244 (2022) 012036 Fulltext: PDF;
In : 19th International Conference on Ion Sources (ICIS 2021), Vancouver, BC, Canada, 20 - 24 Sep 2021, pp.012036
5.
Simulation of Beam Formation in the CERN Negative Ion Source for the Linac4 Accelerator / Vnuchenko, A (CERN) ; Lettry, J (CERN) ; Mochalskyy, S (Garching, Max Planck Inst. Plasmaphys.) ; Wünderlich, D (Garching, Max Planck Inst. Plasmaphys.) ; Fantz, U (Garching, Max Planck Inst. Plasmaphys.) ; Revel, A (LPGP, Orsay) ; Minea, T (Garching, Max Planck Inst. Plasmaphys.)
Linac4 is the negative hydrogen ion (H$^{-}$) injector of the CERN accelerator complex. Modelling of the beam formation is essential for optimizing the current and emittance of the H$^{-}$ ion source. [...]
2022 - 5 p. - Published in : J. Phys. : Conf. Ser. 2244 (2022) 012042 Fulltext: PDF;
In : 19th International Conference on Ion Sources (ICIS 2021), Vancouver, BC, Canada, 20 - 24 Sep 2021, pp.012042
6.
Preliminary Simulation of CERN’s Linac4 H⁻ Source Beam Formation / Vnuchenko, Anna (CERN) ; Fantz, Ursel (Garching, Max Planck Inst.) ; Lettry, Jacques (CERN) ; Minea, Tiberiu (LPGP, Orsay) ; Mochalskyy, Serhiy (Garching, Max Planck Inst.) ; Revel, Adrien (LPGP, Orsay) ; Wünderlich, Dirk (Garching, Max Planck Inst.)
Linac4 is the new (H⁻) linear injector of CERN’s accelerator complex. This contribution describes the modelling activities required to get insight into H⁻ beam formation processes and their impact on beam properties. [...]
JACoW, 2021 - 4 p. - Published in : JACoW IPAC 2021 (2021) 2947-2950 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2947-2950

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