IBIC2026 - 15th International Beam Instrumentation Conference

Development of a new BPM system for the HL-LHC Inner Triplets

WEP010

2 Sept 2026, 16:00

2h

Ballroom C (Whistler Conference Centre)

Poster Presentation MC03: Beam Position Monitors Wednesday Poster Session 3

Speaker

Chris Hulley (European Organization for Nuclear Research)

Description

As part of the upcoming High Luminosity upgrade (HL-LHC), the LHC will be equipped with novel, large aperture Nb3Sn Inner Triplet magnets around the ATLAS and CMS experiments. Each Inner Triplet region will contain 6 new directional coupler Beam Position Monitors (BPMs) to independently measure both LHC beams circulating in a common vacuum chamber. The BPM signals will be measured and processed by a brand-new data acquisition platform based on nearly-direct digitisation using an RF System-on-Chip (RFSoC). This paper discusses the design of the entire system. Results of the laboratory qualification of the new BPMs are shown. The performance of the new data acquisition platform is compared to the one of the systems currently used operationally in the LHC based on laboratory and beam measurements.