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Slow extracted spill ripple control in the CERN SPS using adaptive Bayesian optimisation
/ Kain, Verena (CERN) ; Effinger, Ewald (CERN) ; Follin, Fabio (CERN) ; Velotti, Francesco (CERN) ; Fraser, Matthew (CERN) ; Schenk, Michael (CERN) ; Madysa, Nico (Darmstadt, GSI) ; Arrutia Sota, Pablo Andreas (CERN)
The CERN Super Proton Synchrotron (SPS) offers slow-extracted, high-intensity proton beams at 400 GeV/c for 3 fixed targets in the CERN North Experimental Area (NA) with a spill length of about 5 seconds. Since first commissioning in the late seventies, the NA has seen a steady increase in users, many of which requiring improved spill quality control. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPS55
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPS55
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2.
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Beam optics modelling of slow-extracted very high-energy heavy ions from the CERN Proton Synchrotron for radiation effects testing
/ Johnson, Eliott (CERN) ; Bilko, Kacper (CERN) ; Delrieux, Marc (CERN) ; Esposito, Luigi Salvatore (CERN) ; Emriskova, Natalia (CERN) ; Fraser, Matthew (CERN) ; Garcia Alia, Ruben (CERN) ; Arrutia Sota, Pablo Andreas (CERN) ; Waets, Andreas (CERN)
Testing of space-bound microelectronics plays a crucial role in ensuring the reliability of electronics exposed to the challenging radiation environment of outer space. This contribution describes the beam optics studies carried out for the run held in November 2023 in the context of the CERN High-Energy Accelerators for Radiation Testing and Shielding (HEARTS) experiment. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPR30
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPR30
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3.
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Empty-bucket techniques for spill-quality improvement at the CERN Super Proton Synchrotron
/ Arrutia Sota, Pablo A (CERN) ; Fraser, Matthew A (CERN) ; Hagmann, Gregoire (CERN) ; Kain, Verena (CERN) ; Papotti, Giulia (CERN) ; Spierer, Arthur (CERN) ; Velotti, Francesco M (CERN) ; Burrows, Philip N (JAI, UK) ; Piandani, Roberto (San Luis Potosi U.)
Synchrotrons can provide long spills of particles by employing resonant extraction where the circulating beam is slowly ejected over thousands to millions of turns by exploiting the amplitude growth caused by a transverse resonance. In the CERN Super Proton Synchrotron (SPS), this method is used to satisfy the experimental requests of the North Area. [...]
2024 - 14 p.
- Published in : Phys. Rev. Accel. Beams 27 (2024) 074001
Fulltext: PDF;
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4.
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Benchmarking simulations of slow extraction driven by RF transverse excitation at the CERN Proton Synchrotron
/ Bass, Thomas (CERN) ; Johnson, Eliott (CERN) ; Fraser, Matthew (CERN) ; Arrutia Sota, Pablo Andreas (CERN) ; Gibson, Stephen (Royal Holloway, U. of London) ; Dutheil, Yann (CERN)
Resonant slow extraction is a beam extraction method which provides a continuous spill over a longer duration than can be achieved with fast single-turn or non-resonant multi-turn extraction. By using transverse excitation to drive the circulating particles onto the resonance, a beam can be delivered to stationary target experiments which require low intensity, long-duration beams.In order to accurately and efficiently simulate the extraction process over a wide range of timescales, new modelling tools and computing platforms must be explored. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) TUPM116
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPM116
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5.
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Fast Spill Monitor Studies for the SPS Fixed Target Beams
/ Roncarolo, Federico (CERN) ; Arrutia Sota, Pablo Andreas (CERN) ; Belohrad, David (CERN) ; Bergamaschi, Michele (CERN) ; Calvo Giraldo, Eva (CERN) ; Effinger, Ewald (CERN) ; Fraser, Matthew (CERN) ; Kain, Verena (CERN) ; Martin Nieto, Miguel (CERN) ; Mazzoni, Stefano (CERN) et al.
At the CERN Super Proton Synchrotron (SPS) the proton beam is supplied to the fixed target experiments in the North Area facility (NA) via a slow extraction process, taking place at 400 GeV. The monitoring of the spill quality during the extraction, lasting 4.8 seconds with the present SPS setup, is of high interest for minimising beam losses and providing the users with uniform proton-on-target rates. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 522-526
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.522-526
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6.
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Feasibility of Slow-Extracted High-Energy Ions From the CERN Proton Synchrotron for CHARM
/ Fraser, Matthew (CERN) ; Arrutia Sota, Pablo Andreas (CERN) ; Biłko, Kacper (CERN) ; Charitonidis, Nikolaos (CERN) ; Danzeca, Salvatore (CERN) ; Delrieux, Marc (CERN) ; Duraffourg, Michel (CERN) ; Emriskova, Natalia (CERN) ; Esposito, Luigi Salvatore (CERN) ; García Alía, Ruben (CERN) et al.
The CHARM High-energy Ions for Micro Electronics Reliability Assurance (CHIMERA) working group at CERN is investigating the feasibility of delivering high energy ion beams to the CHARM facility for the study of radiation effects to electronics components engineered to operate in harsh radiation environments, such as space or high-energy accelerators. The Proton Synchrotron has the potential of delivering the required high energy and high-Z (in this case, Pb) ions for radiation tests over the relevant range of Linear Energy Transfer of ~ 10 - 40 MeV cm²/mg with a > 1 mm penetration depth in silicon, specifically for single event effect tests. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1703-1706
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1703-1706
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7.
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Implementation of a Tune Sweep Slow Extraction with Constant Optics at MedAustron
/ Arrutia Sota, Pablo Andreas (CERN) ; Burrows, Philip (JAI, UK) ; De Franco, Andrea (QST, Rokkasho Fusion Inst.) ; Fraser, Matthew (CERN) ; Goddard, Brennan (CERN) ; Kain, Verena (CERN) ; Kuehteubl, Florian (EBG MedAustron) ; Pivi, Mauro (MedAustron) ; Prokopovich, Dale (MedAustron) ; Velotti, Francesco (CERN)
Conventional slow extraction driven by a tune sweep perturbs the optics and changes the presentation of the beam separatrix to the extraction septum during the spill. The constant optics slow extraction (COSE) technique, recently developed and deployed operationally at the CERN Super Proton Synchrotron to reduce beam loss on the extraction septum, was implemented at MedAustron to facilitate extraction with a tune sweep of operational beam quality. [...]
2022 - 3 p.
- Published in : JACoW IPAC 2022 (2022) 1715-1717
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1715-1717
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8.
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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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10.
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Study of alternative locations for the SPS Beam Dump Facility
/ Aberle, Oliver (CERN) ; Ahdida, Claudia (CERN) ; Arrutia Sota, Pablo Andreas (University of Oxford (GB)) ; Balazs, Kincso (CERN) ; Bernhard, Johannes (CERN) ; Brugger, Markus (CERN) ; Calviani, Marco (CERN) ; Dutheil, Yann (CERN) ; Franqueira Ximenes, Rui (CERN) ; Fraser, Matthew Alexander (CERN) et al.
As part of the main focus of the BDF Working Group in 2021, this document reports on the study of alternative locations and possible optimisation that may accompany the reuse of existing facilities with the aim of significantly reducing the costs of the facility. [...]
CERN-ACC-NOTE-2022-0009 ; CERN-PBC-Notes-2022-002.
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28 Feb 2022.
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