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DTSTART;TZID=Europe/Paris:20241125T090000
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DTSTAMP:20241106T154240Z
CREATED:20241106T153701Z
LAST-MODIFIED:20241106T154240Z
UID:2991-1732525200-1732536000@fcppn.in2p3.fr
SUMMARY:Defense of Zhandong ZHANG's  IHEP- UPSay co-tutored thesis
DESCRIPTION:Title: Interaction region optics design of a monochromatization scheme for direct s-channel Higgs production at FCC-ee \nAbstract: \nThe FCC-ee offers the potential to measure the electron Yukawa coupling via direct s-channel Higgs production at a centre-of-mass (CM) energy of about 125 GeV. This measurement is significantly facilitated if the CM energy spread of electron-positron collisions can be reduced to a level comparable to the Standard Model Higgs boson’s natural width of 4.1 MeV without substantial loss in luminosity. Achieving this reduction in collision-energy spread is possible through the “monochromatization” concept. The basic idea consists of creating opposite correlations between spatial position and energy deviation within the colliding beams\, which can be accomplished in beam-optics terms by introducing a nonzero dispersion function with opposite signs for the two beams at the interaction point. Since the first proposal in 2016\, the monochromatization implementation at the FCC-ee has been continuously improved\, starting from preliminary parametric studies. In this thesis\, a detailed study of the interaction region optics design has been conducted for this newly proposed collision mode\, exploring different potential configurations and their implementation in the FCC-ee global lattice\, along with beam dynamics simulations and performance evaluations including the “beamstrahlung” impact. \nPhD Student: Zhandong ZHANG\nSupervisors: Dr. Angeles Faus-Golfe (IJCLab)\, Dr. Frank Zimmermann (CERN)\, Prof. Yunlong Chi (IHEP) and Dr. Zusheng Zhou (IHEP) \nCotutelle IHEP-UPSay \nFunding: China Scholarship Council (CSC) and University of Chinese Academy of Sciences (UCAS). \nDefence date: 25 November 2024 9:00 CET (16:00 CST) \nDefence place: #2 Hall\, Institute of High Energy Physics\, Chinese Academy of Sciences\, 19B Yuquan Road\, Shijingshan District\, 100049 Beijing\, China \nPublic ZOOM link: https://ijclab.zoom.us/j/95216232666?pwd=Fc1CSq8BDUbYqWlc9ywXd0lP0mDno0.1
URL:https://fcppn.in2p3.fr/event/co-tutored-ihep-upsay-thesis-defense-on-interaction-region-optics-design-of-a-monochromatization-scheme-for-direct-s-channel-higgs-production-at-fcc-ee/
LOCATION:#2 Hall\, IHEP\, CAS\, #2 Hall\, IHEP\, CAS\, 19B Yuquan Road\, Beijing\, Shijingshan District\, 100049\, China
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