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CERN Document Server 11 Datensätze gefunden  1 - 10nächste  gehen zum Datensatz: Die Suche hat 1.33 Sekunden gedauert. 
1.
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
2.
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
3.
RF techniques for spill quality improvement in the SPS / Sota, P A Arrutia (CERN ; JAI, UK) ; Fraser, M A (CERN) ; Velotti, F M (CERN) ; Burrows, P N (JAI, UK) ; Kain, V (CERN) ; Papotti, G (CERN) ; Piandani, R (CERN ; San Luis Potosi U.) ; Roncarolo, F (CERN) ; Spierer, A (CERN) ; Vadai, M (CERN)
The CERN Super Proton Synchrotron (SPS) aims at providing stable proton spills of several seconds to the North Area (NA) fixed target experiments via third-integer resonant slow extraction. However, low-frequency power converter ripple (primarily at 50 and 100 Hz) and high-frequency structures (mainly at harmonics of the revolution frequency) modulate the extracted intensity, which can compromise the performance of the data acquisition systems of the NA experiments. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) MOPA116 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA116
4.
Implementation of RF Channeling at the CERN PS for Spill Quality Improvements / Arrutia Sota, Pablo Andreas (CERN) ; Burrows, Philip (JAI, UK) ; Damerau, Heiko (CERN) ; Fraser, Matthew (CERN) ; Vadai, Mihaly (CERN) ; Velotti, Francesco (CERN)
Resonant slow extraction from synchrotrons aims at providing constant intensity spills over timescales much longer than the revolution period of the machine. However, the extracted intensity is undesirably modulated by noise on the machine’s power converters with a frequency range of between 50 Hz and a few kHz. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 2114-2117 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2114-2117
5.
Implementation of synchronised PS-SPS transfer with barrier buckets / Vadai, M. (CERN) ; Damerau, H. (CERN) ; Giovannozzi, M. (CERN) ; Huschauer, A. (CERN) ; Lasheen, A. (CERN)
For the future intensity increase of the fixed-target beams in the CERN accelerator complex, a barrier-bucket scheme has been developed to reduce the beam loss during the 5-turn extraction from the PS towards the SPS, the so-called Multi-Turn Extraction. [...]
arXiv:2210.05416 ; LLRF2022/33.
- 2022. - 7 p.
Fulltext
6.
Barrier bucket gymnastics and transversely split proton beams: Performance at the CERN Proton and Super Proton Synchrotrons / Vadai, M (CERN ; Queen Mary, U. of London) ; Alomainy, A (Queen Mary, U. of London) ; Damerau, H (CERN) ; Giovannozzi, M (CERN) ; Huschauer, A (CERN)
During the 2018 proton run, a new radio-frequency beam manipulation has been studied and successfully implemented at the CERN Proton Synchrotron (PS) for the first time. This technique is used to deplete a well-defined fraction of a continuous longitudinal beam distribution by creating a so-called barrier bucket. [...]
2022 - 12 p. - Published in : Phys. Rev. Accel. Beams 25 (2022) 050101 Fulltext: PDF;
7.
Beam Loss Reduction by Barrier Buckets in the CERN Accelerator Complex / Vadai, Mihaly
For a future intensity increase of the fixed-target beam in the accelerator complex at CERN, new techniques to reduce beam loss are required [...]
CERN-THESIS-2021-043 -

Full text
8.
Barrier bucket and transversely split beams for loss-free multi-turn extraction in synchrotrons / Vadai, M (CERN ; Queen Mary, U. of London (main)) ; Alomainy, A (Queen Mary, U. of London (main)) ; Damerau, H (CERN) ; Gilardoni, S (CERN) ; Giovannozzi, M (CERN) ; Huschauer, A (CERN)
A special radio-frequency manipulation has been studied and successfully implemented at the CERN Proton Synchrotron for the first time. This technique aims at depleting a well-defined fraction of a continuous longitudinal beam distribution by creating a so-called barrier bucket. [...]
2019 - 7 p. - Published in : EPL 128 (2019) 14002 Fulltext: PDF;
9.
Beam manipulations with barrier buckets in the CERN PS / Vadai, Mihaly (Queen Mary, U. of London (main) ; CERN) ; Alomainy, Akram (Queen Mary, U. of London (main)) ; Damerau, Heiko (CERN) ; Gilardoni, Simone (CERN) ; Giovannozzi, Massimo (CERN) ; Huschauer, Alexander (CERN)
A barrier bucket scheme is being considered to reduce losses during the Multi-Turn Extraction from the CERN Proton Synchrotron to the Super Proton Synchrotron for the fixed-target physics programme. For effective loss reduction, the extraction kicker has to be triggered during the gap at the time of the longitudinal barrier. [...]
CERN-ACC-2019-094.- 2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPTS107 Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPTS107
10.
Barrier bucket studies in the CERN PS / Vadai, Mihaly (Queen Mary, U. of London (main) ; CERN) ; Alomainy, Akram (Queen Mary, U. of London (main)) ; Damerau, Heiko (CERN)
Part of the residual beam loss during the Multi-Turn Extraction (MTE) of fixed target beams from the CERN Proton Synchrotron (PS) can be attributed to kicker magnets switching while the beam is coasting with the main radio frequency (RF) systems off before extraction. Generating a barrier bucket to deplete the longitudinal line density of the coasting beam during the kicker rise time can reduce these losses. [...]
CERN-ACC-2019-095.- 2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPTS106 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPTS106

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