2024-06-15
11:08 |
Optimizing Resonance Driving Terms Using MAD-NG Parametric Maps
/ Deniau, Laurent (CERN) ; Kostoglou, Sofia (CERN) ; Maclean, Ewen (CERN) ; Paraschou, Konstantinos (CERN) ; Persson, Tobias (CERN) ; Tomás García, Rogelio (CERN)
In 2023, a review of the LHC octupolar resonance driving terms at injection was carried out, motivated by two observations: (i) unwanted losses during the injection process with strongly powered octupoles and (ii) an expected reduction in emittance growth from e-cloud effects in simulations with weaker octupolar resonances. The MAD-NG code was used to simultaneously optimise the main octupolar resonances: 4Qx, 4Qy, and 2Qx-2Qy by adjusting 16 quadrupole families and 16 octupole families, for a total of 32 parameters. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 483-486
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In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.483-486
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2024-06-15
11:08 |
Analysis Tools for Numerical Simulations of Dynamic Aperture with Xsuite
/ Pugnat, Thomas (CERN) ; Di Croce, Davide (Ecole Polytechnique, Lausanne) ; Giovannozzi, Massimo (CERN) ; Van der Veken, Frederik (CERN)
Recently, several efforts have been made at CERN to develop a new tracking tool, Xsuite, which is intended to be the successor to SixTrack. In this framework, analysis tools have also been prepared with the goal of providing advanced post-processing techniques for the interpretation of dynamic aperture simulations. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 551-554
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In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.551-554
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2024-06-15
11:08 |
Challenges of Target and Irradiation Diagnostics of the IFMIF-DONES Facility
/ Torregrosa, Claudio (Granada U.) ; Arbeiter, Frederik (KIT, Karlsruhe) ; Becerril-Jarque, Santiago ; Brenneis, Bjoern (KIT, Karlsruhe) ; Buligins, Leonids (Salaspils, Nucl. Res. Ctr.) ; Castellanos, Jesus (Castilla-La Mancha U.) ; Chauvin, Nicolas (IRFU, Saclay) ; Fiore, Salvatore (CERN) ; Ibarra, Angel ; Jimenez-Rey, David (Madrid, CIEMAT) et al.
IFMIF-DONES will be a first-class scientific infrastructure consisting of an accelerator-driven neutron source delivering 1e17 n/s with a broad peak at 14 MeV. Such neutron flux will be created by impinging a continuous wave 125 mA, 40 MeV, 5 MW deuteron beam onto a liquid Li jet target, circulating at 15 m/s. [...]
2024 - 5 p.
- Published in : JACoW HB 2023 (2024) WEC1C2
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In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.WEC1C2
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2024-06-15
11:08 |
Radiation Environment in the Large Hadron Collider During the 2022 Restart and Related RHA Implications
/ Biłko, Kacper (CERN ; Lab. Hubert Curien, St. Etienne) ; García Alía, Rubén (CERN) ; Aguiar, Ygor (CERN) ; Danzeca, Salvatore (CERN) ; Di Francesca, Diego (CERN) ; Gilardoni, Simone (CERN) ; Girard, Sylvain (ICJ, Lyon ; IUF, Paris) ; Ricci, Daniel (CERN) ; Sebban, Marc (Lab. Hubert Curien, St. Etienne) ; Uznanski, Slawosz (CERN)
In this work, we present the radiation environment of the large hadron collider (LHC), focusing on the year 2022, the first after the Long Shutdown 2 (LS2) (2019–2021). We highlight the most prominent radiation-level changes with respect to the 2018 operation, commenting on the related Radiation Hardness Assurance implications. [...]
2024 - 11 p.
- Published in : IEEE Trans. Nucl. Sci. 71 (2024) 607-617
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2024-06-15
11:07 |
Extraction of LHC Beam Parameters from Schottky Signals
/ Łasocha, Kacper (CERN) ; Alves, Diogo (CERN) ; Lannoy, Christophe (CERN ; Ecole Polytechnique, Lausanne) ; Mounet, Nicolas (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne)
Analysis of Schottky signals provides rich insights into the dynamics of a hadron beam, with well-established methods of deriving the betatron tune and machine chromaticity. In this contribution, we will report on recent developments in the analysis and understanding of the signals measured at the Large Hadron Collider during proton and Pb⁸²⁺ fills. [...]
2024 - 7 p.
- Published in : JACoW HB 2023 (2024) 382-388
Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.382-388
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2024-06-15
11:07 |
The CompactLight Design Study
/ D'Auria, G (Sincrotrone Trieste) ; Adli, E (Oslo U.) ; Aicheler, M (Helsinki Inst. of Phys.) ; Aksoy, A (Ankara U.) ; Alesini, D (Frascati) ; Apsimon, R (Daresbury ; Lancaster U.) ; Arnsberg, J (KIT, Karlsruhe) ; Auchettl, R (ASP, Melbourne) ; Bainbridge, A (Daresbury) ; Balazs, K (CERN) et al.
CompactLight is a Design Study funded by the European Union under theHorizon 2020 research and innovation funding programme, with Grant Agreement No. 777431.CompactLight was conducted by an International Collaboration of 23 internationallaboratories and academic institutions, three private companies, and five third parties.The project, which started in January 2018 with a duration of 48 months, aimed to designan innovative, compact, and cost-effective hard X-ray FEL facility complemented by asoft X-ray source to pave the road for future compact accelerator-based facilities. [...]
2024 - 208 p.
- Published in : Eur. Phys. J. Spec. Top. 233 (2024) 1-208
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2024-06-15
11:07 |
Performance of the CERN Proton Synchrotron internal dump: numerical simulation studies and comparison with beam measurements
/ Niang, S (CERN) ; Pugnat, T (CERN) ; Domange, D (Brussels U.) ; Esposito, L S (CERN) ; Giovannozzi, M (CERN) ; Gnacadja, E (Brussels U.) ; Hernalsteens, C (CERN) ; Huschauer, A (CERN) ; Tesse, R (Brussels U.)
In the framework of the LHC Injector Upgrade project, a newinternal dump for the CERN Proton Synchrotron (PS) ring has beendesigned, installed, and successfully commissioned. This device isdesigned to move rapidly into the beam and stop charged particlesover several thousand turns to provide protection to PS hardwareagainst beam-induced damage. [...]
2024 - 21 p.
- Published in : JINST 19 (2024) T06002
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In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.T06002
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2024-06-15
11:07 |
Performance of thin-RPC detectors for high rate applications with eco-friendly gas mixtures
/ RPC ECOGas@GIF++ Collaboration
In the last few years, an intense R &D; activity on particle detectors for future HEP applications has been carried on with the aim of developing new techniques as well as studying the performance of already existing detectors when operated in a high rate environment. As for Resistive Plate Chamber detectors, the main challenges to face are the improvement of their detection capabilities and longevity at very high-rates, and the search for new eco-friendly gasmixtures free from greenhouse components. [...]
2024 - 11 p.
- Published in : Eur. Phys. J. C 84 (2024) 605
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2024-06-15
11:07 |
ALICE ITS3: A truly cylindrical vertex detector based on bent, wafer-scale stitched CMOS sensors
/ Liu, Jian (Liverpool U.)
/ALICE Collaboration
The new inner tracking system (ITS2) of the ALICE experiment at the LHC, upgraded during the LHC Long Shutdown 2 (2019–2021) with CMOS monolithic active pixel sensors (ALPIDE), is currently taking data and demonstrating excellent performance in the LHC Run 3. A replacement of the three innermost layers of the ITS2, called ITS3, is foreseen during the LHC Long Shutdown 3 (2026–2028) to further improve its tracking precision and efficiency, particularly at very low transverse momentum down to pT = 0.1 GeV/c. [...]
2024 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1064 (2024) 169355
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In : 13th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors, Vancouver, Canada, 3 - 8 Dec 2023, pp.169355
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2024-06-15
11:07 |
Simulations of a cryogenic, buffer-gas filled Paul trap for low-emittance ion bunches
/ Lechner, S (CERN ; Vienna, Tech. U. ; McGill U.) ; Sels, S (CERN) ; Belosevic, I (TRIUMF) ; Buchinger, F (McGill U.) ; Fischer, P (Greifswald U.) ; Kanitz, C (Erlangen - Nuremberg U.) ; Lagaki, V (CERN ; Greifswald U.) ; Maier, F M (CERN ; Greifswald U.) ; Plattner, P (CERN ; Innsbruck U.) ; Schweikhard, L (Greifswald U.) et al.
Many experiments with pulsed ion beams benefit from or even require ion bunches with both small temporal width as well as small energy spread. To achieve optimal ion-beam preparation, a buffer-gas filled cryogenic Paul trap is being developed in the context of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS). [...]
2024 - 13 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1065 (2024) 169471
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