# Transverse HI ring beam-instabilities + mitigations II

- Institution: CERN
- Department: CAS - CERN Accelerator School
- Speaker: Xavier Buffat
- Year: 2025
- Level: Graduate
- Language: English
- Subjects: Earth and environment, Astronomy and space
- Source: [CERN](https://videos.cern.ch/record/3023641)
- Licence: [CERN](https://copyright.web.cern)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Several applications of circular hadron accelerators require intense beams, yet the interaction of the charged particles with their surroundings leads to a variety of self-destructing mechanisms, so-called beam instabilities, severly limitating to the performance of the machines. In this lecture, we focus on issues arising in the transverse. We will review the most common instability mechanisms, the existing models as well as current strategies to stabilize them through Landau damping with active feedback systems.

00:00:00 Slide 1

00:00:02 Slide 2

00:03:16 Slide 3

00:05:19 Slide 4

00:08:37 Slide 5

00:10:37 Slide 6

00:11:02 Slide 7

00:12:35 Slide 8

00:12:56 Slide 9

00:13:11 Slide 10

00:13:37 Slide 11

00:13:51 Slide 12

00:14:07 Slide 13

00:14:43 Slide 14

00:15:17 Slide 15

00:16:23 Slide 16

00:16:41 Slide 17

00:17:40 Slide 18

00:20:52 Slide 19

00:23:37 Slide 20

00:24:48 Slide 21

00:25:46 Slide 22

00:26:15 Slide 23

00:26:36 Slide 24

00:27:21 Slide 25

00:27:59 Slide 26

00:28:18 Slide 27

00:28:36 Slide 28

00:28:47 Slide 29

00:29:32 Slide 30

00:30:27 Slide 31

00:31:06 Slide 32

00:31:21 Slide 33

00:31:39 Slide 34

00:32:31 Slide 35

00:33:25 Slide 36

00:34:25 Slide 37

00:36:49 Slide 38

00:37:34 Slide 39

00:39:47 Slide 40

00:40:58 Slide 41

00:42:08 Slide 42

00:45:09 Slide 43

## Lectures

1. [Transverse HI ring beam-instabilities + mitigations II](https://invisiblenetwork.ai/learn/cern/3023641/9acae32b1807), 47 min (CERN's player)
