HB2025 - the 71st ICFA Advanced Beam Dynamics workshop on High-Intensity and High-Brightness Hadron Beams

Status and future of the Beam Gas Curtain: a non-invasive profile and emittance monitor for high-intensity hadron machines.

THCBB02

Oct 23, 2025, 12:10 PM

20m

room B (conference center)

Contributed Oral Presentation WGE: Beam Instrumentation, beam Interaction and AI technology THCBB WGE contributed oral

Speaker

Hao Zhang (Cockcroft Institute)

Description

High-intensity hadron machines host beams with destructive power, and traditional beam profile monitors, such as scintillating screens and wire scanners, suffer a short lifetime under such severe conditions. The application of the beam gas curtain monitor (BGC) in the LHC, along with 2 years of successful operation, fills the gap in such measurements in a minimally invasive manner for high-intensity hadron machines. By using a supersonic gas curtain with a tailored shape and gas density, the monitor satisfies the requirements of vacuum, resolution, and machine protection. In this contribution, the operational experience of BGC in the LHC will be discussed, as well as the development plan in the phase of HLLHC, and the possible halo monitor for hadron machines.

Funding Agency

This work was supported by the High Luminosity LHC project and by STFC through the HLLHC UK phase II project No. ST/T001925/1, L, and the Cockcroft core grant No. ST/G008248/1.