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Selected advances in the accelerator design of the Future Circular Electron-Positron Collider (FCC-ee)
/ FCC Collaboration
In autumn 2023, the FCC Feasibility Study underwent a crucial “mid-term review”. We describe some accelerator performance risks for the proposed future circular electron-positron collider, FCC-ee, identified for, and during, the mid-term review. [...]
FERMILAB-CONF-24-0659-AD-PIP2.-
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR14
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR14
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2.
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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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3.
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EuPRAXIA@SPARC_LAB
: Conceptual Design Report
/ Alesini, D (Frascati) ; Anania, M P (Frascati) ; Artioli, M (ENEA, Bologna) ; Bacci, A (INFN, Milan) ; Bartocci, S (Sassari U.) ; Bedogni, R (Frascati) ; Bellaveglia, M (Frascati) ; Biagioni, A (Frascati) ; Bisesto, F (Frascati) ; Brandi, F (CNR, INO, Pisa) et al.
It is widely accepted by the international scientific community that a fundamental milestone towards the realization of a plasma driven future Linear Collider (LC) will be the integration of high gradient accelerating plasma modules in a short wavelength Free Electron Laser (FEL) user facility. [...]
INFN-18-03/LNF.
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2018. - 286 p.
Full text - Fulltext
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4.
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Considerations for a new damping ring design of the FCC-ee pre-injector complex
/ Etisken, O (Kirikkale U. ; Frascati) ; Milardi, C (Frascati) ; Raimondi, P (SLAC ; CERN)
The current injector complex design of the FCC-e+e− project consists of e+/e− linacs, which accelerate the beams up to 6 GeV, a damping ring at 1.54 GeV, a pre-booster ring, accelerating the beam up to 16 GeV and a booster synchrotron ring integrated in the collider tunnel accelerating the beams up to the collision energies. The purpose of the damping ring is to accept the 1.54 GeV beam coming from the linac-1, damp the positron/electron beams and provide the required beam characteristics for the injection into the linac-2. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL175
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL175
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5.
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Collective Effects Estimates for the Damping Ring Design of the FCC-ee
/ Etisken, Ozgur (CERN) ; Antoniou, Fanouria (CERN) ; De Santis, Antonio (Frascati) ; Milardi, Catia (Frascati) ; Zimmermann, Frank (CERN)
The current injector complex design of the FCC-e⁺e⁻ project consists of e⁺/e⁻ linacs, which accelerate the beams up to 6 GeV, a damping ring at 1.54 GeV, a pre-booster ring, accelerating the beam up to 16 GeV and a booster synchrotron ring integrated in the collider tunnel accelerating the beams up to the collision energies. The purpose of the damping ring is to accept the 1.54 GeV beam coming from the linac-1, damp the positron/electron beams and provide the required beam characteristics for the injection into the linac-2. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2435-2438
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2435-2438
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6.
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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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7.
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FCC-ee Operation Model, Availability & Performance
/ Zimmermann, Frank (CERN) ; Apollonio, Andrea (CERN) ; Benedikt, Michael (CERN) ; Brunner, Olivier (CERN) ; Funakoshi, Yoshihiro (KEK, Tsukuba) ; Milardi, Catia (Frascati) ; Myers, Stephen (CERN) ; Niemi, Arto (Tampere U. of Tech.) ; Oide, Katsunobu (KEK, Tsukuba) ; Qin, Qing (Beijing, Inst. High Energy Phys.) et al.
This document discusses the machine parameters and expected luminosity performance for the proposed future circular lepton collider FCC-ee. Particular emphasis is put on availability, physics run time, and efficiency. [...]
JACOW, 2019 - 7 p.
- Published in : 10.18429/JACoW-eeFACT2018-WEPAB03
Fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.WEPAB03
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8.
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EuPRAXIA@SPARC_LAB Design study towards a compact FEL facility at LNF
/ Ferrario, M. (Frascati) ; Alesini, D. (Frascati) ; Anania, M.P. (Frascati) ; Artioli, M. (ENEA, Bologna) ; Bacci, A. (INFN, Milan) ; Bartocci, S. (Sassari U.) ; Bedogni, R. (Frascati) ; Bellaveglia, M. (Frascati) ; Biagioni, A. (Frascati) ; Bisesto, F. (Frascati) et al.
On the wake of the results obtained so far at the SPARC\_LAB test-facility at the Laboratori Nazionali di Frascati (Italy), we are currently investigating the possibility to design and build a new multi-disciplinary user-facility, equipped with a soft X-ray Free Electron Laser (FEL) driven by a $\sim$1 GeV high brightness linac based on plasma accelerator modules. This design study is performed in synergy with the EuPRAXIA design study. [...]
arXiv:1801.08717.-
2018-11-12 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 909 (2018) 134-138
Fulltext: PDF; Preprint: PDF;
In : 3rd European Advanced Accelerator Concepts Workshop, La Biodola, Isola d'Elba, Italy, 24 - 30 Sep 2017, pp.134-138
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9.
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Experimental Measurements of e-Cloud Mitigation Using Clearing Electrodes in the DAФNE Collider
/ Alesini, D (Frascati) ; Drago, A (Frascati) ; Gallo, A (Frascati) ; Guiducci, S (Frascati) ; Milardi, C (Frascati) ; Zobov, M (Frascati) ; De Santis, S (LBNL, Berkeley) ; Demma, Theo (Orsay, LAL) ; Raimondi, P (ESRF, Grenoble)
/DAФNE Collaboration
Recently the DAФNE electron-positron collider has started delivering luminosity to the KLOE-2 experiment. For this run special metallic electrodes were installed in all the dipole and wiggler magnets of the positron ring to cope with the effects induced by the e-cloud formation. [...]
CERN-ACC-2015-0162.-
Geneva : CERN, 2012 - 3 p.
Fulltext: PDF;
In : 3rd International Particle Accelerator Conference, New Orleans, LA, USA, 20 - 25 May 2012, pp.1107-1109
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10.
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DAФNE Operation with Electron-Cloud-Clearing Electrodes
/ Alesini, D (Frascati) ; Drago, A (Frascati) ; Gallo, A (Frascati) ; Guiducci, S (Frascati) ; Milardi, C (Frascati) ; Stella, A (Frascati) ; Zobov, Mikhail (Frascati) ; De Santis, S (LBNL, Berkeley) ; Demma, Theo (Orsay, LAL) ; Raimondi, P (ESRF, Grenoble)
The effects of an electron cloud (e-cloud) on beam dynamics are one of the major factors limiting performances of high intensity positron, proton, and ion storage rings. In the electron-positron collider DAΦNE, namely, a horizontal beam instability due to the electron-cloud effect has been identified as one of the main limitations on the maximum stored positron beam current and as a source of beam quality deterioration. [...]
CERN-ACC-2015-0148.-
Geneva : CERN, 2013 - 6 p.
- Published in : Phys. Rev. Lett. 110 (2013) 124801
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