Optics of beam transport in the NSLS uv-FEL

Conference · Mon Jun 01 04:00:00 EDT 1992

OSTI ID:10146869

Zhang, X; Kramer, S L; Wachtel, J

The NSLS-FEL is designed as a single pass FEL to generate radiation 1 mJ per pulse (10 psec) in 10{sup {minus}4} bandwidth, with continuously tunable wavelength in the range 100--300 nm. A superconducting, recirculating linac provides electron beams of energy 20 MeV to 260 MeV at 4{pi} mm mrad normalized rms emittance with less than 0.1% momentum spread and 2 mm rms bunch length. The optics in this machine is seriously restricted by the requirement to not degrade the electron beam quality. We present a lattice design for the transport lines to be used in beam injection, linac focussing and recirculations. These beam lines are tuned to be linearly achromatic and isochronous, to avoid beam breakup in the cavities, and to minimize second order distortions of the emittance. Special transport lines are designed that allow rapid switching of the electron beam to drive two different FEL wigglers. This provides the capability for up to four simultaneous, high power, independently energy tuned laser beam.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10146869
• Report Number(s): BNL--47376; CONF-920315--37; ON: DE92014166
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200
430303
BEAM DYNAMICS, FIELD CALCULATIONS, AND ION OPTICS
BEAM EMITTANCE
BEAM INJECTION
BEAM OPTICS
BEAM TRANSPORT
DESIGN
ELECTRON BEAMS
EXPERIMENTAL FACILITIES AND EQUIPMENT
FREE ELECTRON LASERS
NSLS
SUPERCONDUCTING MAGNETS
WIGGLER MAGNETS