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Lattice design and beam optics calculations for the new large-scale electron-positron collider FCC-ee

Härer, Bastian

Abstract (englisch):
Following the recommendations of the European Strategy Group for High Energy Physics, CERN launched the Future Circular Collider Study (FCC) to investigate the feasibility of large-scale circular colliders for future high energy physics research.
This thesis presents the considerations taken into account during the design process of the magnetic lattice in the arc sections of the electron-positron version FCC-ee.
The machine is foreseen to operate at four different centre-of-mass energies in the range of 90 to 350$\,$GeV.
Different beam parameters need to be achieved for every energy, which requires a flexible lattice design in the arc sections.
Therefore methods to tune the horizontal beam emittance without re-positioning machine components are implemented.
In combination with damping and excitation wigglers a precise adjustment of the emittance can be achieved.
A very first estimation of the vertical emittance arising from lattice imperfections is performed.
Special emphasis is put on the optimisation of the chromaticity correction scheme based on a multi-family sextupole scheme in the arcs.
In order to obtain a momentum acceptance of $\pm2\,\%$, which is required because of the severe energy loss due to beamstrahlung, it is not sufficient to correct only the linear chromaticity.
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DOI: 10.5445/IR/1000071240
Cover der Publikation
Zugehörige Institution(en) am KIT Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Publikationstyp Hochschulschrift
Publikationsjahr 2017
Sprache Englisch
Identifikator urn:nbn:de:swb:90-712408
KITopen-ID: 1000071240
Verlag KIT, Karlsruhe
Umfang XIV, 168 S.
Art der Arbeit Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Prüfungsdatum 10.02.2017
Referent/Betreuer Prof. A.-S. Müller
Schlagwörter accelerator physics, lattice design, collider, fcc, cern, future circular collider study, beam optics, lepton collider
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
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