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CERN Document Server 52 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 1.26 δευτερόλεπτα. 
1.
Tail population studies in the CERN Proton Synchrotron / Bozatzis, Miltiadis (Aristotle U., Thessaloniki ; CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Huschauer, Alexander (CERN) ; Lasheen, Alexandre (CERN) ; Maclean, Ewen (CERN) ; Prebibaj, Tirsi (CERN) ; Van Goethem, Wietse (CERN)
The beam quality in terms of the transverse beam profiles from the CERN injectors plays a crucial role for the luminosity production at the LHC. Transverse tails beyond a Gaussian distribution have been observed in all the LHC injectors and efforts to optimize them are ongoing, as they can perturb operations due to large losses at LHC injection. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) THPC15 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPC15
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2.
Beam-cavity interaction in the CERN PS 80 MHz RF systems / Taquet, Mathieu (CERN ; Liege U.) ; Lasheen, Alexandre (CERN) ; Rossi, Carlo (CERN) ; Damerau, Heiko (CERN) ; Redouté, Jean-Michel (Liege U.) ; Morvillo, Michele (CERN) ; Chicarella, Simone (CERN)
The 40 MHz and 80 MHz Radio Frequency (RF) systems in the CERN Proton Synchrotron (PS) are required to perform non-adiabatic bunch shortening before beam ejection. This manipulation allows to fit the bunches into the short RF buckets of the 200 MHz Super Proton Synchrotron (SPS). [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) THPC55 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPC55
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3.
Intensity reach of the barrier-bucket multi-turn transfer for fixed-target proton beam from PS to SPS / Damerau, Heiko (CERN) ; Huschauer, Alexander (CERN) ; Lasheen, Alexandre (CERN) ; Cuvelier, Matis (CERN ; U. Paris-Saclay) ; Vadai, Mihaly (CERN) ; Prebibaj, Tirsi (CERN)
Fixed target beams are extracted in five turns from the Proton Synchrotron (PS) at CERN to fill almost half the circumference of the Super Proton Synchrotron (SPS) with each transfer. To avoid beam loss during the risetime of the extraction kickers a longitudinal gap is generated with an RF barrier-bucket scheme. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) TUPS32 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPS32
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4.
Multi-bunch and Multi-burst Longitudinal Beam Observation in the PS / Krefta, Dawid (Warsaw School of Economics (PL)) ; Huschauer, Alexander (CERN) ; Lasheen, Alexandre (CERN) ; Pahl, Hannes (CERN) ; Trad, Georges (CERN)
A new wall current monitor was installed in the PS during the Year-End Technical Stop 2022-2023 with the aim of using it as a longitudinal beam quality monitor. [...]
CERN-ACC-NOTE-2024-0015. - 2024. - 16 p.
Full text
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5.
Performance of the Ion Chain at the CERN Injector Complex and Transmission Studies During the 2023 Slip Stacking Commissioning / Slupecki, Maciej (CERN) ; Albright, Simon (CERN) ; Alemany-Fernández, Reyes (CERN) ; Angoletta, Maria Elena (CERN) ; Argyropoulos, Theodoros (CERN) ; Bartosik, Hannes (CERN) ; Baudrenghien, Philippe (CERN) ; Bellodi, Giulia (CERN) ; Bozzolan, Michele (CERN) ; Bruce, Roderik (CERN) et al.
The 2023 run has been decisive for the LHC Ion Injector Complex. It demonstrated the capability of producing full trains of momentum slip stacked lead ions in the SPS. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 418-421 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.418-421
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6.
Beam Coupling Impedance of the Main Extraction Kickers in the CERN PS / Neroni, Michela (CERN ; U. Rome La Sapienza (main)) ; Barnes, Michael (CERN) ; Lasheen, Alexandre (CERN) ; Mostacci, Andrea (U. Rome La Sapienza (main)) ; Popovic, Branko (Argonne) ; Vollinger, Christine (CERN)
In view of the High Luminosity (HL) upgrade of the LHC, the beam intensity must be doubled in the injector chain. To perform reliable beam dynamics simulations, the beam coupling impedance in the injectors, such as the Proton Synchrotron (PS), must be followed closely by including all contributing elements into the impedance model. [...]
2024 - 5 p. - Published in : JACoW HB 2023 (2024) 178-182 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.178-182
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7.
Longitudinal Collective Effects at Beam Transfer from PS to SPS at CERN / Lasheen, Alexandre (CERN) ; Damerau, Heiko (CERN) ; Karpov, Ivan (CERN) ; Papotti, Giulia (CERN) ; Vinten, Evin (CERN)
The hardware upgrades of the LHC Injectors Upgrade (LIU) project at CERN were completed during the Long Shutdown 2 (2019-2021) to prepare the injectors for the beams required by the High Luminosity (HL) LHC. Doubling the bunch intensity leads to new challenges due to collective effects. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 587-590 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.587-590
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8.
Beam Performance with the LHC Injectors Upgrade / zannini, C (CERN) ; Wegner, R (CERN) ; Vollinger, C (CERN) ; Veness, R (CERN) ; Velotti, F (CERN) ; Sullivan, M (CERN) ; Steerenberg, R (CERN) ; Spierer, A (CERN) ; Skowronski, P (CERN) ; Sito, L (CERN) et al.
The LHC Injectors Upgrade (LIU) project was put in place between 2010 and 2021 to increase the intensity and brightness in the LHC injectors to match the challenging requirements of the High-Luminosity LHC (HL-LHC) project, while ensuring reliable operation of the injectors complex up to the end of the HL-LHC era (ca. 2040). [...]
2024 - 8 p. - Published in : JACoW HB 2023 (2024) 1-8 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.1-8
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9.
Modelling of the PS Beam Phase and Radial Feedback Loops / Naumenko, Oleksandr (Hamburg University (DE)) ; Lasheen, Alexandre (CERN)
This document describes the current models for the beam phase and the radial feedback loops of the analogue PS longitudinal beam control. [...]
CERN-ACC-NOTE-2024-0011. - 2024. - 18 p.
Full text
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10.
Investigations of losses on the CERN SPS flat bottom with HL-LHC type beams / Lasheen, Alexandre (CERN) ; Bartosik, Hannes (CERN) ; Damerau, Heiko (CERN) ; Demetriadou, Despina (CERN) ; Vinten, Evin (CERN) ; Hermes, Pascal (CERN) ; Kain, Verena (CERN) ; Karpov, Ivan (CERN) ; Papotti, Giulia (CERN) ; Vadai, Mihaly (CERN) et al.
The High-Luminosity LHC (HL-LHC) project at CERN aims at doubling the beam intensity and the brightness. To achieve this unprecedented performance, the LHC injectors were upgraded during the Long Shutdown 2 (2019-2021) to overcome limitations such as space charge and beam instabilities. [...]
2023 - Published in : JACoW IPAC 2023 (2023) TUPA153 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA153
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CERN Document Server : 52 εγγραφές βρέθηκαν   1 - 10επόμενοτέλος  μετάβαση στην εγγραφή:
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18 Lasheen, A
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