LINAC2026 - 33rd Linear Accelerator Conference

Beam Loss Measurements with Neutron and Ionization Chamber Monitors during ESS Beam Commissioning to the Tuning Beam Dump

Not scheduled

2h

Daejeon Convention Center

Poster Presentation MC4.A01: Beam diagnostics Poster Session

Speaker

Hooman Hassanzadegan (European Spallation Source)

Description

The European Spallation Source (ESS) employs 266 ionization chamber beam loss monitors (icBLMs) and 76 neutron beam loss monitors (nBLMs). These detectors provide detailed information on beam loss distribution along the ~550 m ESS linac and play a critical role in machine protection and personnel safety. During the second round of beam commissioning to the Tuning Beam Dump in spring 2026, systematic tests were performed with both BLM systems to evaluate their performance, including operational challenges and limitations. The stability of the systems and the readout signals was checked in low- and high-loss scenarios and under different environmental conditions. This paper provides an overview of the BLM system design, including beam loss measurement and machine protection functions, and presents recent results obtained with beam.