17–22 May 2026
C.I.D
Europe/Zurich timezone

Ultra-low beta* optics proposal with new final doublet and better field quality at ATF2

MOP1087
18 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC1.A03: Linear Lepton Colliders Poster session

Speaker

Lewis Kennedy (European Organization for Nuclear Research)

Description

Achieving nanometre-scale beam sizes at the interaction point (IP) is one of the key challenges for future linear colliders such as CLIC. This places stringent requirements on the Final Focus System (FFS) and the tuning of the IP beta functions. The ATF2 facility at KEK, Japan, provides a unique testbed for developing and validating ultra-low beta optics, with the goal of reaching beam sizes below the nominal design. To date, the smallest vertical beam size achieved at ATF2 is around 40~nm. Recent upgrades to the facility, including the installation of two new quadrupoles with improved field quality, are expected to reduce aberrations, thus improving beta and beam size performance. Ongoing studies focus on exploiting these hardware improvements and developing advanced tuning algorithms to approach the ultra-low beta regime.

In which format do you inted to submit your paper? Other

Author

Lewis Kennedy (European Organization for Nuclear Research)

Co-authors

Conrad Caliari (European Organization for Nuclear Research) Philip Burrows (John Adams Institute) Rogelio Tomas (European Organization for Nuclear Research)

Presentation materials

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