CERN Accelerating science

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1.
Design and Optimization of the ASACUSA1 Beam Transport Line / Bojtar, Lajos (CERN) ; Dutheil, Yann (CERN)
The document presents an analysis of beam transport optimization in the ASACUSA1 line at CERN. [...]
CERN-ACC-NOTE-2025-0001.
- 2025
Full text
2.
Dynamic Aperture and Frequency Analysis in ELENA with Electron Cooler Magnetic Field Included / Bojtár, Lajos (CERN)
We present a new tracking algorithm and its implementation called SIMPA. It has the unique feature of long-term tracking of charged particles in arbitrary static electromagnetic fields in a symplectic way. [...]
2024 - 5 p. - Published in : JACoW COOL 2023 (2024) TUPAM1R3 Fulltext: PDF;
In : 14th International Workshop on Beam Cooling and Related Topics (COOL '23), Montreux, Switzerland, 8 - 13 Oct 2023, pp.TUPAM1R3
3.
A review of the 2023 antiproton physics run in the CERN antimatter factory / Bojtar, Lajos (CERN) ; Lefort, Bertrand (CERN) ; Dupuy, Bruno (CERN) ; Gamba, Davide (CERN) ; Joergensen, Lars (CERN) ; Ponce, Laurette (CERN) ; Freyermuth, Pierre (CERN) ; Pasinelli, Sergio (CERN) ; Dutheil, Yann (CERN)
Despite a shorter-than-scheduled physics run due to a hardware problem, the AD/ELENA antiproton complex delivered record beam intensities to the experiments during the 2023 run. This paper reviews the performance of both the CERN Antiproton Decelerator (AD) and the Extra Low ENergy Antiproton (ELENA) decelerator and their associated transfer lines. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) TUPC08 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC08
4.
H- source characterization and transfer line studies with realistic EM fields in the ELENA decelerator at CERN / Bojtar, Lajos (CERN) ; Bencini, Vittorio (CERN) ; Dutheil, Yann (CERN)
A local H- /p source is operated at the CERN Extra Low Energy Antiproton (ELENA) decelerator for commissioning the ring and subsequent electrostatic transfer lines toward the experiments. For proper optics characterization, it is important to have a detailed knowledge of the H- beam parameters at the source. [...]
2024 - 3 p. - Published in : JACoW IPAC 2024 (2024) WEPR53 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR53
5.
ELENA - From Commissioning to Operation / Ponce, Laurette (CERN) ; Bojtár, Lajos (CERN) ; Carli, Christian (CERN) ; Dupuy, Bruno (CERN) ; Dutheil, Yann (CERN) ; Freyermuth, Pierre (CERN) ; Gamba, Davide (CERN) ; Jørgensen, Lars (CERN) ; Lefort, Bertrand (CERN) ; Pasinelli, Sergio (CERN)
In 2021 the Extra Low ENergy Antiproton ring (ELENA) moved from commissioning into the physics production phase providing 100 keV antiprotons to the newly connected experiments paving the way to an improved trapping efficiency by one to two orders of magnitude compared to the AD era. After recalling the major work undertaken during the CERN Long Shutdown 2 (2019-2020) in the antiproton deceleration complex, details will be given on the ELENA ring and the new electrostatic transfer line beam commissioning using an ion source. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 2391-2394 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2391-2394
6.
Efficient Representation of Realistic 3D Static Magnetic Fields for Symplectic Tracking and First Applications for Frequency Analysis and Dynamic Aperture Studies in ELENA / Bojtár, Lajos (CERN)
The algorithm called SIMPA has a new and unique approach to long-term 4D tracking of charged particles in arbitrary static electromagnetic fields. Field values given on the boundary of the region of interest are reproduced by an arrangement of hypothetical magnetic or electric point sources surrounding the boundary surface. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 187-190 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.187-190
7.
ELENA Commissioning / Gamba, Davide (CERN) ; Angoletta, Maria Elena (CERN) ; Belochitskii, P (CERN) ; Bojtár, Lajos (CERN) ; Butin, Francois (CERN) ; Carli, Christian (CERN) ; Dupuy, Bruno (CERN) ; Dutheil, Yann (CERN) ; Eriksson, Tommy (CERN) ; Freyermuth, Pierre (CERN) et al.
The Extra Low ENergy Antiproton storage ring (ELENA) is an upgrade project at the CERN AD (Antiproton Decelerator). ELENA will further decelerate the 5.3 MeV antiprotons coming from the AD down to 100 keV. [...]
2020 - 6 p. - Published in : 10.18429/JACoW-NAPAC2019-WEYBB1 Fulltext: PDF;
In : 3rd North American Particle Accelerator Conference (NAPAC), Lansing, MI, USA, 2 - 6 Sep 2019, pp.626-631
8.
AD/ELENA Electron Cooling Experience During and after CERNs Long Shutdown (LS2) / Gamba, Davide (CERN) ; Bojtár, Lajos (CERN) ; Carli, Christian (CERN) ; Dupuy, Bruno (CERN) ; Frassier, Alexandre (CERN) ; Jørgensen, Lars (CERN) ; Ponce, Laurette (CERN) ; Tranquille, Gerard (CERN)
Electron cooling is a key ingredient of the Antimatter Factory at CERN, now composed of the AD and ELENA rings, both featuring an electron cooler. After the successful commissioning of the ELENA ring and electron cooling with antiprotons in 2018, the facility was shut down for the CERN long shutdown (LS2). [...]
2021 - 6 p. - Published in : JACoW COOL 2021 (2021) 36-41 Fulltext: PDF;
In : International Workshop on Beam Cooling and Related Topics (COOL 2021), Novosibirsk, Russian Federation, 1 - 5 Nov 2021, pp.36-41
9.
ELENA Commissioning and Status / Carli, Christian (CERN) ; Angoletta, Maria Elena (CERN) ; Bartmann, Wolfgang (CERN) ; Bojtár, Lajos (CERN) ; Butin, Francois (CERN) ; Dupuy, Bruno (CERN) ; Dutheil, Yann (CERN) ; Fraser, Matthew (CERN) ; Freyermuth, Pierre (CERN) ; Gamba, Davide (CERN) et al.
The Extra Low ENergy Antiproton ring ELENA is a small synchrotron recently constructed and commissioned to decelerate antiprotons injected from the Antiproton Decelerator AD with a kinetic energy of 5.3 MeV down to 100 keV. Controlled deceleration in the synchrotron, equipped with an electron cooler to reduce losses and generate dense bunches, allows the experiments, typically capturing the antiprotons in traps and manipulating them further, to improve the trapping efficiency by one to two orders of magnitude. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC 2021 (2021) 598-601 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.598-601
10.
Frequency analysis and dynamic aperture studies in a low energy antiproton ring with realistic 3D magnetic fields / Bojtár, Lajos (CERN)
We briefly present recent progress with our algorithm and its implementation called SIMPA described in a previous paper. The algorithm has a new and unique approach to long-term 4D tracking of charged particles in arbitrary static electromagnetic fields. [...]
arXiv:2008.12945.- 2020-10-24 - 12 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 104002 Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;

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