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

Probing the ultimate beta* reach of the LHC

MOP1066
18 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC1.A01: Hadron Colliders Poster session

Speaker

Mattia Stefanelli (European Organization for Nuclear Research)

Description

In 2026, the Large Hadron Collider will conclude its final operational run, before being upgraded to the High-Luminosity Large Hadron Collider during the following long-shutdown. Originally conceived with a nominal beta of 0.55m in both planes, over successive years, its optics design has been steadily pushed beyond those initial goals, with round optics down to 0.25m/0.25m (2018), and flat optics down to 0.6m/0.18m (2025) used in operation. In 2025, dedicated beam-studies were performed to test the viability of controlling beta waist errors at such low-beta, and to explore the viability of squeezing and commissioning the optics even further. Possible operational scenarios for 0.5m/0.15m and 0.4m/0.12m were tested, and optics measurements down to a potential minimum beta of 0.07m achieved. The outcome of these tests will be presented.

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Authors

Ewen Maclean (European Organization for Nuclear Research) Mattia Stefanelli (European Organization for Nuclear Research) Stephane Fartoukh (European Organization for Nuclear Research)

Co-authors

Felix Soubelet (European Organization for Nuclear Research) Joschua Dilly (European Organization for Nuclear Research) Joshua Gray (European Organization for Nuclear Research) Katriya Sabin (European Organization for Nuclear Research) Kyriacos Skoufaris (European Organization for Nuclear Research) Rogelio Tomas (European Organization for Nuclear Research) Sasha Horney (European Organization for Nuclear Research) Weitse Van Goethem (European Organization for Nuclear Research) Yannis Angelis (Aristotle University of Thessaloniki)

Presentation materials

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