# NC Modelling & measurement of non-linear effects

- Institution: CERN
- Department: CAS - CERN Accelerator School
- Speaker: Marco Buzio
- Year: 2023
- Level: Graduate
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3014004)
- Licence: [CERN](https://copyright.web.cern)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

This lecture concerns the techniques to measure and model mathematically non-linear effects in iron-dominated magnets, with the aim to control the magnetic field with a high precision, 100 ppm or better, as typically required in particle accelerators. The topics covered include a review of the physical phenomenology of magnetic saturation, hysteresis and eddy currents in material samples and accelerator magnets, as well of the most popular models to represent them; a discussion on the available instrumentation and measurement techniques; and a survey of open-loop and closed-loop (feedback-based) magnetic field control methods, with a critical comparison about their cost and effectiveness.

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## Lectures

1. [NC Modelling & measurement of non-linear effects](https://invisiblenetwork.ai/learn/cern/3014004/c66223b53a97), 44 min (CERN's player)