UXSS 2016 - Dr. Agostino Marinelli

TL;DR

This content provides an overview of free electron lasers (FELs), including their physics, operation, and applications.

Transcript

Stanford University the first lecture of the series is going to be by Agostino Marinelli he is obviously Italian and but he's from Rome also he got his PhD from UCLA in 2012 and he was a postdoc at slacks right after that internship 2012 and he's been working on accelerators and hopefully he will tell us about its various accelerating technologies ... Read More

Key Insights

• 🔆 FELs are the brightest x-ray sources available, with a brightness 10 orders of magnitude higher than synchrotron sources.
• 😁 Microbunching is a key process in FELs, where electrons in the beam are bunched together to create coherent radiation.
• 😁 The FEL instability can be triggered by seeding with an external laser or by utilizing shot noise in the electron beam.

Questions & Answers

Q: What is the key difference between FELs and synchrotrons?

FELs are much brighter than synchrotron sources due to their use of microbunching, which creates coherent radiation.

Q: How can the FEL instability be triggered?

The FEL instability can be triggered by seeding the electron beam with an external laser or by utilizing shot noise in the beam.

Q: What is the role of microbunching in FELs?

Microbunching is the process of bunching together electrons in the beam, which leads to the emission of coherent radiation in FELs.

Q: How does the brightness of FELs compare to that of synchrotrons?

FELs are approximately 10 orders of magnitude brighter than synchrotron sources.

Summary & Key Takeaways

• FELs are the brightest x-ray sources available, with 10 orders of magnitude more brightness than synchrotron sources.

• FELs rely on microbunching, where electron beams are bunched together to create coherent radiation.

• There are two main ways to trigger the FEL instability: seeding with an external laser or using shot noise in the electron beam.