Design and measurements of the optical klystron for FEL
Creators
- 1. China Science and Technology Univ., Hefei (China). National Synchrotron Radiation Laboratory
- 2. China Inst. of Atomic energy, Beijing (China)
Description
An optical klystron (OK), which means for harmonic generation FEL, is designed and constructed with NdFeB magnets. The analysis equations for designing the OK are listed. The design result was checked by 3-dimensional electromagnetic computation software, the Opera3d. The buncher of the OK and its induction field in the middle plane of the OK, computed with Opera3d are respectively shown. the measured B-H curve of the magnets used in the computation is given. The computed induction field in the beam axis by Opera3d matches with with the field measured by 0.1 mm x 0.1 mm hall probe. The typical parameters of the optical klystron are listed. The magnet gaps of the three OK undulator sections can be independently adjusted from 40 mm to 140 mm. After the OK spontaneous emission is got at the beam energy of 163 MeV and 200 MeV, it is now being upgraded to coherent harmonic generator
Additional details
Publishing Information
- Journal Title
- High Power Laser and Particle Beams
- Journal Volume
- 13
- Journal Issue
- 2
- Journal Page Range
- p. 164-168
- ISSN
- 1001-4322
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 32024628
- Subject category
- S43: PARTICLE ACCELERATORS;
- Descriptors DEI
- DESIGN; FREE ELECTRON LASERS; HARMONIC GENERATION; KLYSTRONS; MAGNETS; SUPERRADIANCE; THREE-DIMENSIONAL CALCULATIONS
- Descriptors DEC
- ELECTRON TUBES; ELECTRONIC EQUIPMENT; EMISSION; ENERGY-LEVEL TRANSITIONS; EQUIPMENT; FREQUENCY MIXING; LASERS; MICROWAVE EQUIPMENT; MICROWAVE TUBES; PHOTON EMISSION; STIMULATED EMISSION