Analysis of Free Electron Laser Performance Utilizing the National Bureau of Standards' CW Microtron
Abstract
The CW racetrack microtron (RTM) will be utilized as a driver for a free electron laser (FEL) oscillator. The TRM possesses many exceptional properties of value for the FEL: i) CW operation, ii) energy from 20-185 MeV, iii) small energy spread and emittance, iv) excellent energy stability, and v) high average power. The 1-D FEL gain formula predicts that the FEL would oscillate at the fundamental approximately from 0.25 to 10 micrometers when up- grading the peak current to > or = 2A. This paper presents 3-D self consistent numerical results including several realistic effects, such as emittance, betatron oscillations, diffraction and refraction. The results indicate that the design value of the transverse emittance is small enough that it does not degrade the FEL performance for intermediate to long wavelengths, and only slightly degrades the performance at the shortest wavelength under consideration. Due to the good emittance, the current density is high enough that focusing, or guiding, beings to manifest itself for wavelengths > 2.0 micrometers.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 19, 1988
- Accession Number
- ADA196928
Entities
People
- Cha-Mei Tang
- Phillip A. Sprangle
- Samuel Penner
- Xavier K. Maruyama
Organizations
- National Institute of Standards and Technology