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Scenario for Precision Beam Energy Calibration in FCC-ee
/ Koop, I A (Novosibirsk, IYF)
The resonance depolarization method was very successfully used in the experiments at LEP, where the mass of the Z-boson was determined with the relative uncertainty [1, 2]. In the future FCC-ee circular electron-positron collider the luminosity at Z-peak (beam energy 45.5 GeV) is expected be 4-5 orders of magnitude higher and one goal is to perform the same experiments as at LEP, but with much greater accuracy, approaching the level of [3]. [...]
CERN-ACC-2015-0081.-
Geneva : CERN, 2015
Fulltext: PDF;
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3.
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Probing FCC-ee energy calibration through resonant depolarization at KARA
/ Zimmermann, Frank (CERN) ; Keintzel, Jacqueline (CERN) ; Mueller, Anke-Susanne (KIT, Karlsruhe) ; Haerer, Bastian (KIT, Karlsruhe) ; Blomley, Edmund (KIT, Karlsruhe) ; Huttel, Erhard (KIT, Karlsruhe) ; Steinmann, Johannes (KIT, Karlsruhe) ; Gethmann, Julian (KIT, Karlsruhe) ; Ruprecht, Robert (KIT, Karlsruhe) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) et al.
The FCC-ee collider physics program requires a precise determination of the center-of-mass energy. The average energies of the two colliding beams can be measured by resonant depolarization (RDP) of polarized electron and positron bunches. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR20
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR20
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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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FCC-ee Energy Calibration and Polarization
/ Keintzel, Jacqueline (CERN) ; Benedikt, Michael (CERN) ; Blondel, Alain (CERN) ; Koop, Ivan (CERN) ; Tomas, Rogelio (CERN) ; Wenninger, Jorg (CERN) ; Wilkinson, Guy (CERN) ; Zimmermann, Frank (CERN)
/FCC-ee Collaboration
The Future Circular electron-positron Collider, FCC-ee, is designed for unprecedented precision for particle physics experiments from the Z-pole to above the top-pair-threshold. This demands a precise knowledge of the centre-of-mass energy (ECM) and collision boosts at all four interaction points and all operation energies. [...]
2022 - 6 p.
- Published in : PoS: ICHEP2022, pp. 048
Fulltext: PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.048
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FCC-ee: Energy calibration
/ Koratzinos, M. (Geneva U.) ; Blondel, A. (Geneva U.) ; Gianfelice-Wendt, E. (Fermilab) ; Zimmermann, F. (CERN)
The FCC-ee aims to improve on electroweak precision measurements, with goals of 100 keV on the Z mass and width, and a fraction of MeV on the W mass. Compared to LEP, this implies a much improved knowledge of the centre-of-mass energy when operating at the Z peak and WW threshold. [...]
arXiv:1506.00933; IPAC-2015-TUPTY063; FERMILAB-CONF-15-273-AD; TUPTY063; CERN-ACC-2015-371.-
2015-06 - 4 p.
- Published in : 10.18429/JACoW-IPAC2015-TUPTY063
Fulltext: tupty063 - PDF; arXiv:1506.00933 - PDF; External links: Fermilab Library Server (fulltext available); Full-text at JACoW Server
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.TUPTY063
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The FCC-ee design study: luminosity and beam polarization
/ Koratzinos, M. (Geneva U.)
The FCC-ee accelerator is considered within the FCC design study as a possible first step towards the ultimate goal of a 100 TeV hadron collider. It is a high luminosity e+e- storage ring collider, designed to cover energies of around 90, 160, 240 and 350GeV ECM (for the Z peak, the WW threshold, the ZH and ttbar cross-section maxima respectively) leading to different operating modes. [...]
arXiv:1511.01021.-
SISSA, 2016-03-01 - 11 p.
- Published in : PoS EPS-HEP2015 (2015) 518
Fulltext: PDF; Preprint: PDF; External link: Preprint
In : European Physical Society Conference on High Energy Physics 2015, Vienna, Austria, 22 - 29 Jul 2015, pp.518
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Beam Dynamics Challenges for FCC-ee
/ Zimmermann, Frank (CERN) ; Benedikt, Michael (CERN) ; Oide, Katsunobu (KEK, Tsukuba) ; Bogomyagkov, Anton (Novosibirsk, IYF) ; Levichev, Evgeny (Novosibirsk, IYF) ; Migliorati, Mauro (INFN, Rome ; Roma U.) ; Wienands, Uli (CERN)
The goals of FCC-ee include reaching luminosities of up to a few 1036 cm-2s-1 per interaction point at the Z pole or some 1034 cm-2s-1 at the ZH production peak, and pushing the beam energy up to ≥175 GeV, in a ring of 100 km circumference, with a total synchrotron-radiation power not exceeding 100 MW. A parameter baseline as well as high-luminosity crab-waist options were described in [1] and [2], respectively. [...]
CERN-ACC-2015-0113.-
Geneva : CERN, 2015 - 9 p.
- Published in : ICFA Beam Dyn. Newsl.: 67 (2015) , pp. 93-100
Fulltext: CERN-ACC-2015-113 - PDF; challenges-FCC-ee-July2015-v9 - DOCX;
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