Abstract:
In this paper we present current status of the Booster
Synchrotron for the Duke FEL storage ring. The Booster will
provide full energy injection into the storage ring at
energy from 0.25 to 1.2 GeV. The Duke storage ring FEL (SR
FEL) operates in lasing mode with 193-700 nm wavelength
range. This range will be extended into VUV in near future.
The geometry of the Duke SR FEL provides for interacting
head-on collision of e-beam and FEL photons. This mode of
operation is used to generate intense beams of -rays from 2
MeV to about 200 MeV (currently from 2 MeV to 58 MeV).
Generation of -rays with energy exceeding 20 MeV causes the
loss of electrons, which will be replaced by injection from
the Booster operating in a top-off mode. The Booster has a
robust FODO lattice. The paper presents the design of the
magnetic elements and their 3D simulations using MERMAID 3D
code. We also present design and parameters of fast
extraction kicker with 10 nS pulse duration. The elements of
the magnetic system, vacuum system, injection and extraction
kickers will be designed and fabricated by Budker Institute
of Nuclear Physics, Novosibirsk, Russia.