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

Analysis of laser engineered surface structures’ roughness and surface impedance

SUPG087
19 May 2024, 14:00
4h
Bluegrass (MCC Exhibit Hall A)

Bluegrass

MCC Exhibit Hall A

201 Rep. John Lewis Way S, Nashville, TN 37203, USA
Student Poster Presentation MC7.T14 Vacuum Technology Student Poster Session

Speaker

Patrick Krkotic (European Organization for Nuclear Research)

Description

This study examines Laser Engineered Surface Structures (LESS) in the context of their potential application within particle accelerators. These structures are investigated due to their efficient reduction of secondary electron yield to counteract the formation of electron clouds, a phenomenon detrimental to accelerator performance. A critical aspect of their evaluation involves understanding their radio-frequency characteristics to determine their influence on beam impedance.
LESS involves intricate surface modifications, integrating etched grooves and deposited particulates, resulting in a complex surface topology. Measurements are conducted on two distinct surface patterns, from which particulates are then removed with incremental cleaning. Acquired data form the basis for mathematical models elucidating observed results.
Novel approaches are investigated in addition to several established surface roughness models, including analysis of geometrical attributes of the surface topology and the associated electric currents. The aim is to develop a framework that describes roughness's influence across varying scales to assist in selecting appropriate treatment parameters.

Region represented Europe
Paper preparation format LaTeX

Primary author

Tamás Madarász (Budapest University of Technology and Economics)

Co-authors

Marcel Himmerlich (European Organization for Nuclear Research) Patrick Krkotic (European Organization for Nuclear Research) Sergio Calatroni (European Organization for Nuclear Research)

Presentation materials

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