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    111. N.I.Alinovsky, A.D.Goncharov, V.F.Klyuev, A.V.Kozhemyakin, A.M.Kryuchkov, V.

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      Parkhomchuk, M.V.Petrichenkov, S.A.Rastigeev, V.B.Reva (Budker Institute of Nu- clear Physics, Novosibirsk, Russia) Status of Accelerator Mass Spectrometer at BINP Present status of the accelerator mass spectrometry (AMS) facility at BINP is described. The AMS facility with additional electric and magnetic analyzers into the terminal of tan- dem accelerator is dedicated for precise analysis of carbon isotopes. The results of ex- periments on ion beams acceleration and stripping are given. Mikhail Vladimirovich Petrichenkov: petrmv@inp.nsk.su

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    112. V.P.Laricheva, A.F.Korotkiy, V.V.Krayushkin, L.A.Smirnova, B.A.Kovalev,

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      P.Chelnakov (Branch of FSUE "Karpov Institute of Physical Chemistry", Obninsk, Russia); Vymorkov N.V., Nikulina I.P. (FSUE ONTPP "TECHNOLOGIYA", Obninsk, Russia)

ELECTRON BEAM TECHNOLOGY FOR MANUFACTURE OF COMPOSITIONS WITH UNIQUE CHARACTERISTICS

Two types of complex solvent-free binders were developed in the course of scientific re- search for radiation-induced technologies used in the manufacture of large-size items. A manufacturing process could be accomplished through a single stage of radiation curing or through a two-stage procedure, which implies radiation manufacture of the long-lived prepregs and subsequent thermo-chemical hardening. The developed binders make it pos- sible to obtain composition materials with high heat stability (glass transition temperature ~260°C) and radiation resistance (>10 MGy).

Dr. Vladimir Vasillyevich Krayushkin: krayushkin@obninsk.ru

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    113. E.Antokhin (Budker Institute of Nuclear Physics, Novosibirsk, Russia); T.Fujisawa,

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      Kumada, T.Matsumoto and S.Wakasa. Magnet system for PET cyclotron based on permanent magnets. The number of positron emission tomography (PET) centers based on proton cyclotron is rapidly growing nowadays worldwide. It actually requests for simple, reliable and cheap proton cyclotron of energy 10-20 MeV to be designed for mass installations. Normally the magnet system for PET cyclotron is made with iron and copper coils. Although the some optimization of conventional "warm" magnet is possible, the another approach could be the magnet system based on permanent magnet, aiming the cost saving due to no needs of electric power during cyclotron life time. The permanent magnet system for 10 MeV PET cyclotron was designed, manufactured and measured. The present paper describes the cy- clotron permanent magnet system as well as beam trajectory analysis in measured mag- netic fields and RF system design. Evgeny Igorevich Antokhin: antokhin@mail.ru

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