Intensity and Tune Measurement Section (IQ)

The BI Intensity and Tune Measurement Section develops and maintains all intensity (number of charged particles) and tune (resonant beam oscillations) measurement systems throughout the CERN accelerator complex. We are a multi-cultural team of electronics technicians, engineers and physicists.
The core competencies of the section’s scientific and technical personnel cover a wide area of expertise, including:	electromagnetic design and simulations, analogue RF circuits, complex high-speed digital and mixed RF systems, low-noise precision electronics, RF measurement techniques, radiation tolerant designs, firmware development, radiation-tolerant designs, beam instrumentation physics, accelerator physics, materials science and mechanical design, simulation and data analysis.
The SY-BI-IQ section is actively involved in large CERN-wide projects and initiatives:	High Luminosity LHC Upgrade (HL-LHC) LHC Injectors Upgrade (LIU) The Advanced Proton Driven Plasma Wakefield Acceleration Experiment (AWAKE) Antimatter factory CERN Accelerator School (CAS)
Video links:	Beam Instrumentation at CERN

Operational Systems

A measure of the number of charged particles, from 10⁷ to 10¹⁴ charges, in CERN beams.

Fast Beam Current Transformers
- Capable of measuring the current of short (picosecond to microsecond) beam pulses
DC Beam Current Transformers
- Capable of measuring the current of DC (i.e. continuous) beams

A crucial measurement that allows machine operators to optimize particle transmission throughout the accelerators in the complex.

A measurement of the frequency and amplitude of resonant beam oscillations. Uses the highly sensitive (in-house developed) BBQ detection concept.

A crucial measurement in terms of beam stability and minimization of losses.