The Beam Instrumentation Group is responsible for designing, building and maintaining the instruments that allow observation of the particle beams and the measurement of related parameters for all CERN accelerators, transfer lines and secondary beam lines. (> 10000 instruments)

The Beam Instrumentation Group is also responsible for designing, building and maintaining the DC electron beams that are used for cooling the heavy ions and antiproton beams in LEIR, AD, ELENA as well as the newly approved hollow electron beams that will be used for collimation in HL-LHC.

It is engaged in research and development to improve existing detection techniques and explore new avenues to allow further optimization of the current machines and to meet the challenges associated with future accelerators.

The range of activities undertaken by the Group include: accelerator physics, detector technology, custom built electronics, mechanical and vacuum engineering for detector housings and software engineering.