Abstracts Brochure - CERN

TUPLS075
TUPLS076
TUPLS077
27-Jun-06 16:00 - 18:00 TUPLS — Poster Session
to 5 MW, a repetition rate of the order of 50 Hz and a pulse length of about 1 µs. In this paper a system of 3 staged
FFAG synchrotrons is studied. In Stage 1 the beam is accelearted from 2 MeV up to 250 MeV, stage 2 accelerates fro
250 MeV up to 2 GeV, and stage 3 accelerates from 2 GeV up to 26 GeV. In stage 2 1013 particles per puls within an
emittance of 250 π mm mrad at a repetition rate of 1KHz can be accelerated using a proper injection RFQ. Stage 2 will
end up at 2GeV with beam power of about 5 MW. Stage 3 is designed as an option secondary particle production at
25 GeV. The technical concept will be described and an optimisation of the system in terms of costs is studied.
Design of Flat-top Cavity for the K 800 Superconducting Cyclotron
L.A.C. Piazza, D. Battaglia, L. Calabretta, A.C. Caruso, F. Consoli,
M.M. Maggiore, D. Rifuggiato, A. Spartà (INFN/LNS)
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A 3rd harmonic Flat-top acceleration system
for the K 800 Superconducting Cyclotron operating
at the Laboratori Nazionali del Sud
(LNS) was designed to improve beam qual-
ity by reducing the energy spread of accelerated particles. The superposition of the fundamental and the 3rd harmonic
acceleration voltage allows to obtain a more uniform acceleration voltage. The Flat-top effect is realized by an additional
3rd harmonic coaxial resonator, capacitively coupled to K 800 cavities, that perturbs the EM field in the cavities
by forcing the system to resonate both at 3rd harmonic and at fundamental at the same time. The Flat-top system was
designed and optimized using 3D electromagnetic codes like Ansoft HFSS and CST MicroWave Studio. Calculations
of dissipated power, Dee acceleration voltage and cavities’ coupling are presented.
Beam Extraction of 150MeV FFAG
M. Aiba, Y. Mori, H. Nakayama, K. Okabe, Y. Sakamoto, A. Takagi
(KEK) R. Taki (GUAS/AS) Y. Yonemura (Kyushu University)
A beam extraction from FFAG accelerator
was performed for the first time at KEK
150MeV proton FFAG synchrotron. The purpose
of 150MeV FFAG project is to establish
a working prototype for various applications. The beam extraction is thus one of important goals. The extraction is
based on fast extraction methode using kicker and pulse septum working at 100Hz. A rapid cycling is also our focus
to take advantages of FFAG accelerator. Beam extraction experiment was successful under 100Hz operating. The
details of experiment will be presented in this paper.
Development of the FFAG-ERIT Ring
An intense neutron source with the emit-
K. Okabe, M. Muto (KEK) Y. Mori (KURRI)
tance recovery internal target (ERIT) using
the FFAG accelerator is under development.
The design of the FFAG storage ring for this purpose will be presented.