1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

First proton crabbing at the LHC via head-on beam-beam interaction

WEPS036
4 Jun 2025, 16:00
2h
Exhibiton Hall A _Salmon (TWTC)

Exhibiton Hall A _Salmon

TWTC

Poster Presentation MC5.D10 Beam-Beam Effects Theory, Simulations, Measurements, Code Developments Wednesday Poster Session

Speaker

Andrea Fornara (University of Manchester)

Description

The first experimental observation of a 10 $\mu$m crabbing orbit at 1~$\sigma_z$ induced by head-on collisions with a non-zero crossing angle ($\theta_c$) in a high-energy proton beam at the LHC is presented. This challenging measurement required both the design of a dedicated experiment and a careful calibration and optimization of the beam instrumentation to produce and detect such a subtle effect. By varying the crossing angle from positive to negative values the reversibility of the effect and its dependence on the crossing angle were also demonstrated. Lattice simulations were performed to corroborate the experimental results, showing excellent agreement with the measured crabbing amplitudes. This experiment highlights the potential of the existing wideband beam-position monitors to diagnose crabbing effects, which will be crucial in the HL-LHC upgrade.

Region represented Europe
Paper preparation format LaTeX

Author

Andrea Fornara (University of Manchester)

Co-authors

Georges Trad (European Organization for Nuclear Research) Guido Sterbini (European Organization for Nuclear Research) Michi Hostettler (European Organization for Nuclear Research) Robert Appleby (Cockcroft Institute) Thomas Levens (European Organization for Nuclear Research) Xavier Buffat (European Organization for Nuclear Research)

Presentation materials

There are no materials yet.