Optical modeling of the Jefferson Laboratory IR demo FEL

George R. Neil; Stephen V. Benson; Michelle D. Shinn; Paul C. Davidson; Peter K. Kloeppel

doi:10.1117/12.273666

2 May 1997 Optical modeling of the Jefferson Laboratory IR demo FEL

George R. Neil, Stephen V. Benson, Michelle D. Shinn, Paul C. Davidson, Peter K. Kloeppel

Proceedings Volume 2989, Modeling and Simulation of Higher-Power Laser Systems IV; (1997) https://doi.org/10.1117/12.273666
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

The Thomas Jefferson National Accelerator Facility (formerly known as CEBAF) has embarked on the construction of a 1 kW free-electron laser operating initially at 3 microns that is designed for laser-material interaction experiments and to explore the feasibility of scaling the system in power and wavelength for industrial and Navy defense applications. The accelerator system for this IR demo includes a 10 MeV photocathode-based injector, a 32 MeV CEBAF-style superconducting radio-frequency linac, and single-pass transport which accelerates the beam from injector to wiggler, followed by energy-recovery deceleration to a dump. The electron and optical beam time structure in the design consists of a train of picosecond pulses at 37.425 MHz pulse repetition rate. The initial optical configuration is a conventional near-concentric resonator with transmissive outcoupling. Future upgrades of the system will increase the power and shorten the operating wavelength, and utilize a more advanced resonator system capable of scaling to high powers. The optical system of the laser has been modeled using the GLAD^R code by using a Beer's-law region to mimic the FEL interaction. Effects such as mirror heating have been calculated and compared with analytical treatments. The magnitude of the distortion for several materials and wavelengths has been estimated. The advantages as well as the limitations of this approach are discussed.

Citation Download Citation

George R. Neil, Stephen V. Benson, Michelle D. Shinn, Paul C. Davidson, and Peter K. Kloeppel "Optical modeling of the Jefferson Laboratory IR demo FEL", Proc. SPIE 2989, Modeling and Simulation of Higher-Power Laser Systems IV, (2 May 1997); https://doi.org/10.1117/12.273666

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available