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He
is mainly engaged in the study
of free electron laser (FEL) and the
accelerator driven sub-critical system (ADS). He joined the study of free
electron laser, a project of ¡°863 Program¡± undertaken by CIAE. While
doing FEL physics, he put forward the phase place model of beam two years
earlier than his foreign colleagues and studied the important phenomena
of high-power FEL oscillator in transverse and longitudinal directions,
such as strong sideband instability and optical guider problems. He was in
charge of the physics design of the injector which
drives the far infrared FEL, studied the impact of accelerator noise on
the beam quality and the FEL oscillator, and built the INEX package for
the integrated numerical simulation experiment of the electron linac.
During
his study of ADS, he analyzed the beam halo and put forward the method of
chaotic theory with which to study the fundamental mode of the unmatched beam
halo in the periodic focusing system. He also put forward a new
accelerator scheme of simultaneously accelerating positive ions and
negative ions. He built the automatic measurement software and the
analysis software for the RF system of the resonant coupling RFQ
accelerator. They were used in the cold model tuning of the RFQ of INFN
with the best results obtained thus far.
He transformed
SLAC¡¯s famous EGUN into ion source program. It was installed in the ion
source hall of HIMAC accelerator for beam test. And it was also applied in
the design of several
ion sources built by the National Institute of Radiological Science and Japanese
Accelerator Engineering Company.
He succeeded in
developing a RF beam chopper for Japanese JHF, which was utilized in an accelerator for the first
time in the world. He accomplished the design of MEBY of JHF
and put forward a new design method to amplify the beam deflection using
quadruples.
His
current research field is high intensity proton accelerator for the application
in ADS and spallation neutron source.
The
key projects he is undertaking include ¡°Study of the Key Physics and
Technological Problems of High Intensity Proton Linac¡±, ¡°Study of
Intense Beam Physics and Design of Accelerator Structure¡± and ¡°Study of
Intermediate Energy and High Intensity Accelerator Physics & Transport
of Strong Beam in Low Energy Accelerating Structure¡±, supported by
"973 Program", etc.
He
has published over 60 papers in foreign and domestic journals since 1984.
E-mail£º
fusn@mail.ihep.ac.cn
Telephone£º£¨010£©68236283
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