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1.
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Damping ring and transfer lines of FCC-𝑒+𝑒− injector complex
/ Spampinati, Simone (Frascati) ; De Santis, Antonio (Frascati) ; Dutheil, Yann (CERN) ; Etisken, Ozgur (Kirikkale U. ; Frascati) ; Ramjiawan, Rebecca (CERN) ; Milardi, Catia (Frascati)
The Future Circular Collider project is built around two main pillars: the construction of 100 km lepton collider running at increasing energies from the Z-pole to the t-tbar threshold (FCC-ee) followed by a hadron collider in the same tunnel (FCC-hh) to explore unprecedented energy frontier.The realization of FCC-ee relies on a very challenging injector complex that should provide the highest ever realized source of positrons, which will serve the first phase of the collider operations (Z-pole). In this contribution the relevant aspects related to the damping of the high-emittance beam coming from the positron source and the transport of the damped beam within the different LINAC of the injector complex are presented and discussed..
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPA112
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA112
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2.
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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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4.
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Findings of the Physics Beyond Colliders ECN3 Beam Delivery Task Force
/ Ahdida, Claudia (CERN) ; Bartosik, Hannes (CERN) ; Bernhard, Johannes (CERN) ; Brugger, Markus (CERN) ; Calviani, Marco (CERN) ; Colinet, Antoine (CERN) ; Esposito, Luigi Salvatore (CERN) ; Franqueira Ximenes, Rui (CERN) ; Fraser, Matthew Alexander (CERN) ; Gautheron, Fabrice (University of Patras (GR)) et al.
The ECN3 Beam Delivery Task Force was mandated by the PBC Study Group to assess the technical feasibility of increasing the proton beam intensity to the ECN3 hall of the North Area to satisfy the demands of a compelling set of PBC experimental physics proposals. This report summarises the findings of the Task Force that converge on a technically feasible solution with an implementation timeline that could exploit and build upon the investment already foreseen as part of Phase 1 of the NA-CONS project, and take the SPS complex into a new intensity frontier for Fixed Target physics in Run4..
CERN-PBC-REPORT-2023-001.-
Geneva : CERN, 06 - 43.
PBC ECN3 TF Final Report: PDF;
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5.
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Concepts and Considerations for FCC-ee Top-Up Injection Strategies
/ Ramjiawan, Rebecca (CERN) ; Aiba, Masamitsu (PSI, Villigen) ; Bartmann, Wolfgang (CERN) ; Dutheil, Yann (CERN) ; Hofer, Michael (CERN) ; Hunchak, Patrick (PSI, Villigen)
The Future Circular electron-positron Collider (FCC-ee) is proposed to operate in four modes, with beam energies from 45.6 GeV (Z-pole) to 182.5 GeV (tt-bar production) and luminosities up to 4.6×10³⁶ cm²s⁻¹. At the highest energies the beam lifetime would be less than one hour, meaning that top-up injection will be crucial to maximise the integrated luminosity. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2106-2109
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2106-2109
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Simulation Studies of Intra-Train, Bunch-by-Bunch Feedback Systems at the International Linear Collider
/ Ramjiawan, Rebecca (JAI, UK ; CERN) ; Bett, Douglas (JAI, UK ; CERN) ; Bodenstein, Ryan (Jefferson Lab ; JAI, UK) ; Burrows, Philip (JAI, UK) ; Christian, Glenn (Diamond Light Source ; JAI, UK) ; Perry, Colin (JAI, UK)
The International Linear Collider (ILC) is a proposed electron-positron collider targeting collision energies from 250 GeV to 1 TeV. With design luminosities of order 10³⁴ cm²s⁻¹, a beam-based, intra-train feedback system would be required near the Interaction Point (IP) to provide nanometre-level stabilisation of the beam overlap in the collisions. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 861-864
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.861-864
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7.
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The FCCee Pre-Injector Complex
/ Craievich, Paolo (PSI, Villigen) ; Alharthi, Fahad (IJCLab, Orsay) ; Auchmann, Bernhard (PSI, Villigen) ; Bartmann, Wolfgang (CERN) ; Benedikt, Michael (CERN) ; Besana, Maria Ilaria (CERN) ; Bettoni, Simona (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Calviani, Marco (CERN) ; Chaikovska, Iryna (IJCLab, Orsay) et al.
The international FCC study group published in 2019 a Conceptual Design Report for an electron-positron collider with a centre-of-mass energy from 90 to 365 GeV with a beam currents of up to 1.4 A per beam. The high beam current of this collider create challenging requirements on the injection chain and all aspects of the linac need to be carefully reconsidered and revisited, including the injection time structure. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2007-2010
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2007-2010
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Studies on Top-Up Injection into the FCC-ee Collider Ring
/ Hunchak, Patrick (Saskatchewan U., CLS ; Saskatchewan U.) ; Aiba, Masamitsu (PSI, Villigen) ; Bartmann, Wolfgang (CERN) ; Boland, Mark (Saskatchewan U., CLS ; Saskatchewan U.) ; Dutheil, Yann (CERN) ; Hofer, Michael (CERN) ; Ramjiawan, Rebecca (CERN) ; Zimmermann, Frank (CERN)
In order to maximize the luminosity production time in the FCC-ee, top-up injection will be employed. The positron and electron beams will be accelerated to the collision energy in the booster ring before being injected with either a small transverse or longitudinal separation to the stored beam. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1699-1702
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1699-1702
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Overview of the Machine Learning and Numerical Optimiser Applications on Beam Transfer Systems for LHC and Its Injectors
/ Velotti, Francesco (CERN) ; Barnes, Michael (CERN) ; Carlier, Etienne (CERN) ; Dutheil, Yann (CERN) ; Fraser, Matthew (CERN) ; Goddard, Brennan (CERN) ; Magnin, Nicolas (CERN) ; Ramjiawan, Rebecca (CERN) ; Renner, Elisabeth (CERN) ; Van Trappen, Pieter (CERN) et al.
Machine learning and numerical optimisation algorithms are getting more and more popular in the accelerator physics community and, thanks to the computing power available, their application in daily operation more likely. In the CERN accelerator complex, and specifically on the beam transfer systems, many promising exploitation of these numerical tools have been put in place in the last years. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 961-964
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.961-964
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Conceptual Design of the FCC-ee Beam Dumping System
/ Krainer, Alexander (CERN) ; Andreu Muñoz, Pablo (CERN) ; Bartmann, Wolfgang (CERN) ; Calviani, Marco (CERN) ; Dutheil, Yann (CERN) ; Lechner, Anton (CERN) ; Nuiry, Francois-Xavier (CERN) ; Perillo-Marcone, Antonio (CERN) ; Ramjiawan, Rebecca (JAI, UK ; CERN)
The Future Circular electron-positron Collider (FCC-ee) will feature stored beam energies of up to 18 MJ. This is a factor 100 higher than any current or past lepton collider. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1753-1756
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1753-1756
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