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Low-emittance Tuning for Circular Colliders
/ Charles, Tessa (Melbourne U.) ; Aumon, Sandra (CERN) ; Holzer, Bernhard (CERN) ; Oide, Katsunobu (CERN ; KEK, Tsukuba) ; Tydecks, Tobias (CERN) ; Zimmermann, Frank (CERN)
The 100 km FCC-ee e⁺/e⁻ circular collider requires luminosities in the order of 10³⁵ cm⁻² s⁻¹ and very low emittances of 0.27 nm·prad for the horizontal plane and 1 pm·prad in the vertical. In order to reach these requirements, extreme focusing of the beam is needed in the interaction regions, leading to a vertical beta function of 0.8 mm at the IP. [...]
JACOW, 2019 - 6 p.
- Published in : 10.18429/JACoW-eeFACT2018-TUOAB02
Fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.TUOAB02
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Several Topics on Beam Dynamics in FCC-ee
/ Oide, Katsunobu (KEK, Tsukuba) ; Aumon, Sandra (CERN) ; Charles, Tessa (CERN) ; El Khechen, Dima (CERN) ; Shatilov, Dmitry (Novosibirsk, IYF) ; Tydecks, Tobias (CERN)
The FCC-ee is a double-ring $e^+e^-$ collider to be installed
in a common tunnel of∼ 100km circumference, as a po-
tential first step before the FCC-hh hadron collider. Several
studies on the beam dynamics at FCC-ee: low emittance
tuning, dynamic aperture, beam blowup with/without beam
beam, are introduced in the paper..
JACOW, 2019 - 5 p.
- Published in : 10.18429/JACoW-eeFACT2018-MOYAA01
Fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.MOYAA01
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Overall Injection Strategy for FCC-ee
/ Ogur, Salim (CERN) ; Aiba, Masamitsu (PSI, Villigen) ; Antoniou, Fanouria (CERN) ; Barnyakov, Alexey (Novosibirsk, IYF) ; Chaikovska, Iryna (Orsay, LAL) ; Charles, Tessa (CERN) ; Chehab, Robert (Orsay, LAL) ; Etisken, Ozgur (Ankara U.) ; Furukawa, Kazuro (KEK, Tsukuba) ; Härer, Bastian (CERN) et al.
The Future Circular electron-positron Collider (FCC-ee) requires fast cycling injectors with very low extraction emittances to provide and maintain extreme luminosities at center of mass energy varying between 91.2-385 GeV in the collider. For this reason, the whole injector complex table is prepared by putting into consideration the minimum fill time from scratch, bootstrapping, transmission efficiency as well as store time of the beams in synchrotrons to approach equilibrium emittances. [...]
JACOW, 2019 - 8 p.
- Published in : 10.18429/JACoW-eeFACT2018-TUPAB03
Published fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.TUPAB03
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Updates on alternative pre-booster ring design and wiggler magnet considerations of SPS for the FCC $e^{+}e^{-}$ injector
/ Etisken, Ozgur (Ankara U. ; CERN) ; Antoniou, Fanouria (CERN) ; Çiftçi, Abbas (Izmir U. Economics, Izmir) ; Papaphilippou, Yannis (CERN) ; Tydecks, Tobias (CERN)
The Future Circular $e^{+}e^{−}$ Collider (FCC-$e^{+}e^{−}$) injector complex needs to produce and to transport a high-intensity $e^{+}e^{−}$ beam at a fast repetition rate for topping up the collider at its collision energy. Two different options are under consideration as pre-accelerator before the bunches are transferred to the high-energy booster: using the existing SPS and designing a completely new ring. [...]
CERN-ACC-2019-177.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPTS097
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPTS097
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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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Status of the FCC-ee Top-Up Booster Synchrotron
/ Härer, Bastian (CERN) ; Holzer, Bernhard (CERN) ; Papaphilippou, Yannis (CERN) ; Tydecks, Tobias (CERN)
This contribution presents the status of the top-up booster synchrotron for the FCC electron-positron collider FCC-ee, which is a 100 km electron-positron collider being designed for precision studies and rare decay observations in the range of 90 to 365 GeV centre-of-mass energy. In order to keep the luminosity at a level of the order of 10³⁵ cm⁻²s⁻¹ continuous top-up injection is required, because of the short beam lifetime of less than one hour. [...]
CERN-ACC-2018-111.-
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF059
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF059
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Status of the LHC Schottky Monitors
/ Tydecks, Tobias (CERN) ; Alves, Diogo (CERN) ; Levens, Thomas (CERN) ; Wendt, Manfred (CERN) ; Wenninger, Jorg (CERN)
The Large Hadron Collider (LHC) features four transverse Schottky monitors detecting Schottky noise from the beam. From the Schottky noise signal, beam properties like tune, chromaticity, and bunch by bunch relative emittances, can be extracted. [...]
CERN-ACC-2018-112.-
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF058
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF058
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FCC-ee Dynamic Aperture Studies and Frequency Map Analysis
/ Tydecks, Tobias (CERN) ; Aumon, Sandra (CERN) ; Charles, Tessa (CERN) ; Härer, Bastian (CERN) ; Holzer, Bernhard (CERN) ; Oide, Katsunobu (CERN) ; Papaphilippou, Yannis (CERN) ; Wenninger, Jorg (CERN)
The FCC-ee Lepton Collider will provide e⁺e⁻ collisions in the beam energy range of 45.6 GeV to 182.5 GeV. FCC-ee will be a precision measurement tool for Z, W, H and t physics with expected luminosities of 2.07× 10³⁶ cm⁻² s⁻¹ at the Z-pole and 1.3 × 10³⁴ cm⁻² s⁻¹ at the tt⁻ threshold. [...]
CERN-ACC-2018-113.-
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF057
Fulltext: mopmf057_2 - PDF; mopmf057 - PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF057
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Beam Dynamics Simulations for Operating a Robinson Wiggler at the MLS
/ Li, Ji (Helmholtz-Zentrum, Berlin) ; Feikes, Joerg (Helmholtz-Zentrum, Berlin) ; Ries, Markus (Helmholtz-Zentrum, Berlin) ; Tydecks, Tobias (CERN)
A Robinson wiggler is planned to be installed in the storage ring of the Metrology Light Source (the MLS). The Robison wiggler (RW) is a device consisting of a chain of combined-function magnets (CFMs), intended to manipulate the damping partition numbers and thus adjust the longitudinal emittance. [...]
CERN-ACC-2018-120.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPAF086
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAF086
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