# Short Bunch Length Measurements II

- Institution: CERN
- Department: CAS - CERN Accelerator School
- Speaker: Thibaut Lefevre
- Year: 2025
- Level: Graduate
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3027018)
- 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)

These lectures introduce diagnostic techniques for longitudinal bunch profile and bunch length measurement, covering radiative, radio-frequency, and laser-based methods. Radiative techniques analyze beam-induced radiation characteristics. Radio-frequency methods use RF deflecting fields to convert temporal bunch evolution into transverse profiles. Laser-based diagnostics employ either ultra-short laser pulse sampling or electro-optical encoding with birefringent crystals. The lectures detail the principles, performance, and applicability of each technique for short bunch measurement.

00:00:00 Slide 1

00:07:46 Slide 2

00:08:14 Slide 3

00:09:45 Slide 4

00:12:37 Slide 5

00:13:57 Slide 6

00:17:52 Slide 7

00:18:59 Slide 8

00:19:45 Slide 9

00:21:16 Slide 10

00:22:20 Slide 11

00:23:15 Slide 12

00:26:43 Slide 13

00:27:36 Slide 14

00:28:14 Slide 15

00:30:16 Slide 16

00:32:21 Slide 17

00:32:50 Slide 18

00:34:17 Slide 19

00:34:47 Slide 20

00:37:05 Slide 21

00:38:13 Slide 22

00:44:39 Slide 23

00:46:25 Slide 24

00:49:32 Slide 25

00:52:17 Slide 26

00:53:32 Slide 27

## Lectures

1. [Short Bunch Length Measurements II](https://invisiblenetwork.ai/learn/cern/3027018/7e8b567708c4), 54 min (CERN's player)