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CERN Document Server 2,048 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 0.45 sekunder. 
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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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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
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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
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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
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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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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;
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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
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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;
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Progress in the Bunch-to-Bucket Transfer Implementation for FAIR / Ferrand, Thibault (Darmstadt, Tech. Hochsch.) ; Bachmann, Oliver (Darmstadt, Tech. U.) ; Bai, Jiaoni (Darmstadt, GSI) ; Damerau, Heiko (CERN) ; Klingbeil, Harald (Darmstadt, Tech. Hochsch. ; Darmstadt, GSI)
The transfer of bunched ion beams between various synchrotrons is required for the multi-accelerator complex FAIR, presently under construction at GSI. To avoid a dedicated distribution infrastructure for radiofrequency (RF) signals between each source and destination synchrotron, a new approach has been developed to transmit bunch and bucket phase information using synchronous Ethernet. [...]
CERN-ACC-2017-230.- 2017 - 3 p. - Published in : 10.18429/JACoW-IPAC2017-THPVA041 Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.THPVA041
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Improvement of the Longitudinal Beam Transfer from PS to SPS at CERN / Lasheen, Alexandre (CERN) ; Damerau, Heiko (CERN) ; Repond, Joël (CERN) ; Schwarz, Markus (CERN) ; Shaposhnikova, Elena (CERN)
The beam transfer from the Proton Synchrotron (PS) to the Super Proton Synchrotron (SPS) at CERN is a critical process for the production of beams for the Large Hadron Collider (LHC). A bunch-to-bucket transfer is performed with the main drawback that the rf frequency in the SPS (200 MHz) is five times higher than the one in the PS (40 MHz). [...]
CERN-ACC-2018-173.- 2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-THPAF042 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAF042
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