Abstracts Brochure - CERN

WEPCH — Poster Session 28-Jun-06 16:00 - 18:00
The Performance of Double-grid O-18 Water Target for FDG Production
The main stream of our study about the target
is increasing the lifetime of the target windows.
Mainly we conduct our study to increase
the cooling performance and secondly
H.B. Hong, J.-S. Chai, M.G. Hur, H.S. Jang, J. Kang (KIRAMS) C.H.
Cho, K.M. Kim (Yonsei University)
about the structural design of the targets and target window foils. We already develop and publish the results of our
research about O-18 double-grid water target, which had installed on our 13 MeV cyclotron KIRAMS-13. The beam
size of the accelerated proton was 9*18 mm 2 (9 by 18 square millimeter). The double-grid target shows relatively low
pressure during irradiation and good yield of F-18. The average yield of F-18 after irradiation was more than 1 Ci at
12.5 MeV , 30 µA. Additionally, we are conducting new research for new techniques to increase the performance of
low energy double-grid target and a new state-of-the-art pleated double foil target.
Design of Tandem Target for F-18 and C-11 Production
F-18 and C-11 are most commonly produced
positron emitting nuclide at hospital which
has own cyclotron and useful isotope for
development of radio-pharmaceuticals for
imaging tumors with PET. Generally, it is
necessary to build up two separate target sys-
M.G. Hur, D.H. An, J.-S. Chai, H.B. Hong, S.S. Hong, W.T. Hwang,
H.S. Jang, I.S. Jung, J. Kang, J.H. Kim, Y.-S. Kim, M.Y. Lee, T.K. Yang
(KIRAMS) S.W. Kim, S.D. Yang (Advanced Radiation Technology
Institute, Korea Atomic Energy Research Institute)
tem to produce F-18 and C-11 and has to bombard either using different beam line or beam time as a general rule. In
this research, the tandem target for simultaneous production of C-11 and F-18 has been designed. The withdrawal
system has been divided into two parts to collect [C-11] methane gas and [F-18]fluoride ion simultaneously after
bombarding. The grid supported mid foil for separate C-12 gas and O-18 water. 30MeV for incident energy for whole
target, 13.9MeV for C-11 and 7.6MeV for F-18 were used. After irradiation, 300 ± 50 mCi of C-11 and 600 ± 50 mCi of
F-18 were simultaneously produced with proton beam current of 20 uA for one hour.
Design of 12 MEV RTM for Multiple Applications
Design of a compact 12 MeV race-track microtron
(RTM) is described. The results
of operating wavelength choice, accelerating
structure and end magnets optimization and
A.V. Poseryaev, V.I. Shvedunov (MSU) M.F. Ballester, Yu.A.
Kubyshin (UPC)
beam dynamics simulation are represented. Use of a C-band linac and rare earth permanent magnet end magnets
permit to design RTM, which is more compact and more effective as compared with the same energy circular microtron
or linac. Electron beam with energy 4-12 MeV in 2 MeV step can be extracted from RTM. The estimated pulsed
RF power required for feeding the linac is about 800 kW, total mass of accelerator is less than 40 kg and its dimensions
are about 500x200x110 mm3.
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