Illustration of the beam gas curtain measurement principle, showing gas curtain formation and the resulting gas jet density distribution.
By Hao Zhang (Cockcroft Institute/University of Liverpool) on Accelerating News
Following a positive evaluation during a review of transverse beam profile monitoring for the HiLumi LHC in September 2025, in February 2026 the BGC monitor was approved as an important addition to the beam instrumentation baseline for the HiLumi era.
“It’s a huge success and vindication of our work together for many years,” said Raymond Veness, who leads the Beam Instrumentation work package of the HiLumi LHC Project, during the 12th BGC collaboration meeting in Darmstadt, Germany. “However, we now need to move ahead rapidly to produce the new instrument for the Long Shutdown 3 schedule.”
This instrument produces two-dimensional images of a charged particle beam using beam-induced fluorescence, which occurs when particles in the beam interact with a thin supersonic curtain of gas introduced by the instrument.