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The status of the energy calibration, polarization and monochromatization of the FCC-ee
/ Bauche, Jeremie (CERN) ; Blondel, Alain (CERN) ; Ciarma, Andrea (Frascati) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Bogomyagkov, Anton (Novosibirsk, IYF) ; Martens, Aurélien (IJCLab, Orsay) ; Gaskell, David (Jefferson Lab) ; Sagan, David (Cornell U.) ; Barber, Desmond (New Mexico U.) ; Shatilov, Dmitry (CERN) et al.
The Future Circular electron-positron Collider, FCC- ee, is designed for unprecedented precision for particle physics experiments from the Z-pole up to above the top-pair-threshold, corresponding to a beam energy range from 45.6 to 182.5 GeV. Performing collisions at various particle-physics resonances requires precise knowledge of the centre-of-mass energy (ECM) and collision boosts at all four interaction points. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL059
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL059
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2.
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Simulations of synchrotron-radiation-induced electron production in the CESR vacuum chamber wall
/ Crittenden, J A (Cornell U., CLASSE) ; Poprocki, S (Cornell U., CLASSE) ; Rubin, D L (Cornell U., CLASSE) ; Sagan, D (Cornell U., CLASSE)
We report on calculations of electron production by synchrotron radiation absorbed in the vacuum chamber walls of the Cornell Electron Storage Ring (CESR). These photo-electrons are the source of electron clouds which limit the performance of storage rings by causing betatron tune shifts, instabilities and emittance growth. [...]
2020 - 12 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.183-194 (CERN-2020-007)
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3.
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Polarization and Centre-of-mass Energy Calibration at FCC-ee
/ Blondel, Alain (Geneva U. ; CERN ; Paris U., VI-VII) ; Janot, Patrick (CERN) ; Wenninger, Jörg (CERN) ; Aßmann, Ralf (DESY) ; Aumon, Sandra (CERN) ; Azzurri, Paolo (INFN, Pisa) ; Barber, Desmond P. (DESY) ; Benedikt, Michael (CERN) ; Bogomyagkov, Anton V. (Novosibirsk, IYF) ; Gianfelice-Wendt, Eliana (Fermilab) et al.
The first stage of the FCC (Future Circular Collider) is a high-luminosity electron-positron collider (FCC-ee) with centre-of-mass energy ranging from 88 to 365 GeV, to study with high precision the Z, W, Higgs and top particles, with samples of $5 \times 10^{12}$ Z bosons, $10^8$ W pairs, $10^6$ Higgs bosons and $10^6$ top quark pairs. [...]
arXiv:1909.12245 ; FERMILAB-PUB-19-495-APC.
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2019. - 107 p.
Fermilab Library Server (fulltext available) - Fulltext - Fulltext
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4.
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Examining mitigation schemes for synchrotron radiation in high-energy hadron colliders
/ Guillermo, G (Merida, IPN ; CERN) ; Sagan, D (Cornell U., CLASSE) ; Zimmermann, F (CERN)
At high proton-beam energies, beam-induced synchrotron radiation is an important source of heating, of beam-related vacuum pressure increase, and of primary photoelectrons, which can give rise to an electron cloud. We use the synrad3d code developed at Cornell to simulate the photon distributions in the arcs of several existing, planned, or proposed highest-energy hadron colliders to analyze the efficiency of several techniques developed, or proposed, to mitigate the negative effects of synchrotron radiation, such as a sawtooth surface and slots in the beam screen..
2018 - 7 p.
- Published in : Phys. Rev. Accel. Beams 21 (2018) 021001
Fulltext: PDF;
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5.
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Comparing Behaviour of Simulated Proton Synchrotron Radiation in the Arcs of the LHC with Measurements
/ Guillermo Cantón, Gerardo (CERN) ; Ady, Marton (CERN) ; Angelucci, Marco (Frascati) ; Cimino, Roberto (Frascati) ; Kersevan, Roberto (CERN) ; La Francesca, Eliana (Frascati) ; Sagan, David (Cornell U., CLASSE) ; Zimmermann, Frank (CERN)
In previous work it was shown that at high proton-beam energies, synchrotron radiation is an important source of beam-screen heating, of beam-related vacuum pressure increase, and of primary photoelectrons, which can contribute to electron cloud formation. We have used the Synrad3D code developed at Cornell to simulate the photon distributions in the arcs of the LHC, HL-LHC, and FCC-hh. [...]
CERN-ACC-2017-209.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPVA011
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA011
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6.
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Simulating Proton Synchrotron Radiation in the Arcs of the LHC, HL-LHC, and FCC-hh
/ Guillermo Cantón, Gerardo (Merida, IPN) ; Sagan, David (Cornell U.) ; Zimmermann, Frank (CERN)
At high proton-beam energies, beam-induced synchrotron radiation is an important source of heating, of beam-related vacuum pressure increase, and of primary photoelectrons, which can give rise to an electron cloud. We use the Synrad3D code developed at Cornell to simulate the photon distributions in the arcs of the LHC, HL-LHC, and FCC-hh. [...]
CERN-ACC-2016-0079.-
Geneva : CERN, 2016
- Published in : 10.18429/JACoW-IPAC2016-WEOCA03
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEOCA03
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7.
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8.
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Synchrotron-Radiation Photon Distribution for Highest Energy Circular Colliders
/ Maury Cuna, GHI (Merida, IPN) ; Sagan, D (Cornell U., CLASSE) ; Dugan, G (Cornell U., CLASSE) ; Zimmermann, F (CERN)
At high energies, beam-induced synchrotron radiation is an important source of heating, beam-related vacuum pressure increase, and primary photoelectrons, which can give rise to an electron cloud. The photon distribution along the beam pipe wall is a key input to codes such as ECLOUD and PyECLOUD, which model the electron cloud build-up. [...]
CERN-ACC-2013-0128.-
Geneva : CERN, 2013 - 3 p.
Fulltext: PDF;
In : 4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013, pp.1340
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9.
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10.
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Electron Cloud at Low Emittance in CesrTA
/ Palmer, Mark (Cornell U., CLASSE) ; Alexander, James (Cornell U., CLASSE) ; Billing, Michael (Cornell U., CLASSE) ; Calvey, Joseph (Cornell U., CLASSE) ; Conolly, Christopher (Cornell U., CLASSE) ; Crittenden, James (Cornell U., CLASSE) ; Dobbins, John (Cornell U., CLASSE) ; Dugan, Gerald (Cornell U., CLASSE) ; Eggert, Nicholas (Cornell U., CLASSE) ; Fontes, Ernest (Cornell U., CLASSE) et al.
The Cornell Electron Storage Ring (CESR) has been reconfigured as a test accelerator (CesrTA) for a program of electron cloud (EC) research at ultra low emittance. The instrumentation in the ring has been upgraded with local diagnostics for measurement of cloud density and with improved beam diagnostics for the characterization of both the low emittance performance and the beam dynamics of high intensity bunch trains interacting with the cloud [...]
2010
External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.TUYMH02
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