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1.
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Hybrid on-axis and off-axis top-up injection at the future circular lepton collider
/ Yue, Sen (CERN) ; Dutheil, Yann (CERN) ; Bartmann, Wolfgang (CERN) ; Johnson, Eliott (CERN) ; Martinek, Petr (CERN)
In order to maximize the integrated luminosity of the future circular lepton collider (FCC-ee), a top-up injection scheme is required. Amongst the four operation modes of FCC-ee, the Z operation mode has the highest stored beam energy in the collider ring with about 20 MJ per beam. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR13
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR13
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2.
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SPS injection kicker system: 2023 operational experience and upgrade proposals for high-luminosity LHC
/ Favia, Giorgia (CERN) ; Zannini, Carlo (CERN) ; Standen, Dylan (CERN) ; Velotti, Francesco (CERN) ; Ducimetière, Laurent (CERN) ; Feliciano, Luis (CERN) ; Barnes, Michael (CERN) ; Diaz Zumel, Miguel (CERN) ; Trubacova, Pavlina (CERN) ; Kramer, Thomas (CERN) et al.
The SPS injection kicker system comprises twelve MKP-S (small aperture) modules and four MKP-L (large aperture) modules. An upgraded MKP-L magnet was installed in the SPS, during December 2022, in view of the higher beam intensity needed in the future for High-Luminosity-LHC. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC38
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC38
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3.
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A new baseline layout for the FCC-hh ring
/ Perez-Segurana, Gustavo (CERN) ; Abramov, Andrey (CERN) ; Zimmermann, Frank (CERN) ; Giovannozzi, Massimo (CERN) ; Benedikt, Michael (CERN) ; Bruce, Roderik (CERN) ; Risselada, Thys (CERN) ; Bartmann, Wolfgang (CERN)
The Future Circular Collider (FCC) study includes two accelerators, a high-energy lepton collider (FCC-ee) and an energy-frontier hadron collider (FCC-hh). Both machines share the same tunnel infrastructure. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPC14
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC14
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4.
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Chapter 19: Injection and Beam Dump Systems
/ Bracco, C (CERN) ; Barnes, M J (CERN) ; Bartmann, W (CERN) ; Calviani, M (CERN) ; Perez, D Carbajo (CERN) ; Carlier, E (CERN) ; Ducimetiere, L (CERN) ; Frankl, M I (CERN) ; Goddard, B (CERN) ; Jowett, J (CERN) et al.
Some of the elements of the LHC injection and extraction systems will be upgraded or replaced to adapt to the increased beam brightness and intensity of the HL-LHC beams [1; 2]. The injection main protection absorber will be replaced with new hardware which will be able to absorb and withstand 288 HL-LHC bunches in case of an injection kicker failure. [...]
2024 - 17 p.
- Published in : Adv. Ser. Direct. High Energy Phys. 31 (2024) 427-443
Fulltext: PDF;
In : The High Luminosity Large Hadron Collider, pp.427-443
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5.
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CERN SPS Dilution Kicker Vacuum Pressure Behaviour under Unprecedented Beam Brightness
/ Velotti, Francesco (CERN) ; Barnes, Michael (CERN) ; Bartmann, Wolfgang (CERN) ; Bartosik, Hannes (CERN) ; Carlier, Etienne (CERN) ; Favia, Giorgia (CERN) ; Karpov, Ivan (CERN) ; Li, Kevin (CERN) ; Magnin, Nicolas (CERN) ; Mether, Lotta (CERN) et al.
The Super Proton Synchrotron (SPS) is the second largest synchrotron at CERN and produces high-brightness beams for the Large Hadron Collider (LHC). Recently, the dilution kicker (MKDH) of the SPS beam dump system (SBDS) has demonstrated unanticipated behaviour under high beam brightness conditions. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 447-450
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.447-450
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6.
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FCC-ee $e^+e^-$ Injection and Booster rRng
/ Ramjiawan, Rebecca (CERN) ; Barnes, Michael (CERN) ; Bartmann, Wolfgang (CERN) ; Borburgh, Jan (CERN) ; Chancé, Antoine (Saclay) ; Dalena, Barbara (IRFU, Saclay) ; Dutheil, Yann (CERN) ; Hofer, Michael (CERN) ; Howling, Emily (Royal Holloway, U. of London) ; Hunchak, Patrick (Saskatchewan U.)
The Future Circular electron-positron Collider (FCC-ee) is a proposal for a 91.17 km collider, which would operate in four modes with energies ranging from 45.6 GeV (Z-pole) to 182.5 GeV (ttbar-production). At high energies the beam lifetime could be as low as 6 minutes, requiring the beam to be continuously topped up to reach a high integrated luminosity. [...]
2023 - 9 p.
- Published in : JACoW eeFACT 2022 (2023) 227-235
Fulltext: PDF;
In : 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+ e- Colliders (eeFACT2022), INFN, Frascati, Italy, 12 - 16 Sep 2022, pp.227-235
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7.
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Operational experience of a low beam coupling impedance injection kicker magnet for the CERN SPS ring
/ Barnes, M J (CERN) ; Bartmann, W (CERN) ; Díaz, M (CERN) ; Ducimetière, L (CERN) ; Favia, G (CERN) ; Feliciano, L (CERN) ; Kramer, T (CERN) ; Namora, V (CERN) ; Standen, D (CERN) ; Stadlbauer, T (CERN) et al.
The CERN SPS injection kicker magnets (MKP) were developed in the 1970's, before beam power deposition was considered an issue. There are two types of these magnets in the SPS: MKP-S (small aperture) and MKP-L (large aperture) versions. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPA164
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPA164
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8.
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Design of a new CERN SPS injection system via numerical optimisation
/ Waagaard, E (CERN) ; Barnes, M J (CERN) ; Bartmann, W (CERN) ; Bencini, V (CERN) ; Borburgh, J (CERN) ; Ducimetière, L S (CERN) ; Kramer, T (CERN) ; Stadlbauer, T (CERN) ; Trubacova, P (CERN) ; Velotti, F M (CERN)
The Super Proton Synchrotron (SPS) injection system plays a fundamental role to preserve the quality of injected high-brightness beams for the Large Hadron Collider (LHC) physics program and to maintain the maximum storable intensity. The present system is the result of years of upgrades and patches of a system not conceived for such intensities and beam qualities. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPA097
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA097
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9.
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Recent updates of the layout of the lattice of the CERN hadron-hadron Future Circular Collider
/ Abramov, A (CERN) ; Bartmann, W (CERN) ; Benedikt, M (CERN) ; Bruce, R (CERN) ; Giovannozzi, M (CERN) ; Perez Segurana, G (CERN) ; Risselada, T (CERN) ; Zimmermann, F (CERN)
The Future Circular Collider (FCC) study comprises two accelerators, namely a high-energy lepton collider (FCC-ee) and an energy-frontier hadron collider (FCC-hh). Both rings share the same tunnel infrastructure, analogous to LEP and LHC. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL033
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL033
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10.
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Mitigation of High Voltage Breakdown of the Beam Screen of a CERN SPS Injection Kicker Magnet
/ Barnes, Michael (CERN) ; Bartmann, Wolfgang (CERN) ; Díaz Zumel, Miguel (CERN) ; Ducimetière, Laurent (CERN) ; Feliciano, Luis (CERN) ; Kramer, Thomas (CERN) ; Namora, Vasco (CERN) ; Stadlbauer, Tobias (CERN) ; Standen, Dylan (CERN) ; Trubacova, Pavlina (CERN) et al.
The SPS injection kicker magnets (MKP) were developed in the 1970’s, before beam induced power deposition was considered an issue. These magnets are very lossy from a beam impedance perspective: this is expected to be an issue during SPS operation with the higher intensity beams needed for HL-LHC. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2868-2871
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2868-2871
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