19–24 May 2024
Music City Center
US/Central timezone

Understanding of the LHC warm vacuum module heating

TUAN3
21 May 2024, 10:10
20m
Room 104 (Music City Center)

Room 104

Music City Center

201 Rep. John Lewis Way S, Nashville, TN 37203, USA
Contributed Oral Presentation MC5.D04 Beam Coupling Impedance Theory, Simulations, Measurements, Code Development TUAN: Beam Dynamics and Electromagnetic Fields (Contributed)

Speaker

Patrick Krkotic (European Organization for Nuclear Research)

Description

During the third run of the Large Hadron Collider in 2023, which had the highest intensity bunch population compared to previous runs, increased losses attributed to pressure spikes within a warm vacuum sector triggered a beam dump. Subsequent inspections revealed localised annealing and plasticisation of the tension spring in the sliding contact radio-frequency finger module, alongside traces of vapour deposition on the various module components with the stainless-steel spring material. A comprehensive analysis involving vacuum and beam impedance studies was conducted to investigate the triggering mechanisms behind the radio-frequency finger module failure. The findings indicate localised beam-induced heating, which could lead to the annealing of the spring with a consequent cascade of effects. Additionally, investigations of potential mitigation measures were performed.

Region represented Europe
Paper preparation format LaTeX

Primary author

Patrick Krkotic (European Organization for Nuclear Research)

Co-authors

Vincent Baglin (European Organization for Nuclear Research) Paolo Chiggiato (European Organization for Nuclear Research) Yannis Papaphilippou (European Organization for Nuclear Research) Giovanni Rumolo (European Organization for Nuclear Research) Chiara Antuono (European Organization for Nuclear Research) Giuseppe Bregliozzi (European Organization for Nuclear Research) Sergio Calatroni (European Organization for Nuclear Research) Elena de la Fuente (European Organization for Nuclear Research) Alessio Galloro (University of Calabria) Lorenzo Giacomel (European Organization for Nuclear Research) Benoit Salvant (European Organization for Nuclear Research) Leonardo Sito (University of Napoli Federico II) Carlo Zannini (European Organization for Nuclear Research) O. Santos

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