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P.106. A.A.Bondus, V.P.Gorbachev, R.V.Maksimov, V.P.Stepanchuk (Saratov State University, Saratov, Russia)

X-band Microtron in Saratov State University

The problems of mastering of X-band microtrons, achievements in creating of small-size transportable microtrons, are considered. The project of microtron with permanent magnet with compatible microwave and vacuum system is described. Perspectives of decrease of mass and size of X-band microtrons are discussed.

Victor Petrovich Stepanchuk: stepanchukvp@info.sgu.ru

P.107. A.A.Bryazgin, B.L.Factorovich, E.A.Kuper, V.V.Repkov (Budker Institute of Nuclear Physics, Novosibirsk, Russia)

Modulator of electron injector of industrial accelerator ILU-10.

Presented work describes the modulator of electron current of the industrial accelerator ILU-10. The main target of building of the unit is decreasing of energy spectrum and sta- bilization amplitude of the accelerated current. The base of unit is HV linear DC amplifier (up to 5000V) with power (up to 5 A) MOS-FET output stage. It allows to create feed- back and stabilize either current or energy of the beam. Also this unit has mode for tuning any shape of beam current and energy. Unit has microprocessor control circuit which pro- vides useful link with computer control system of accelerator and if needed provides the handle operation and indicates main parameters of electron beam.

Dr. Vladimir Valerevich Repkov: V.V.Repkov@inp.nsk.su

P.108. Evgeny Perepelkin, Alexey Vorozhtsov, Sergey Vorozhtsov and Leonid Onischenko (Joint Institute Nuclear Research /DLNP, LPP Dubna, Moscow Region)

BEAM DYNAMICS CYCLOTRON

SIMULATIONS

FOR

THE

CUSTOMS

The compact isochronous cyclotron is considered as a source of 1.75 MeV protons for the detection of explosives using gamma ray resonant absorption technique. Given the mar- ginal request for the beam intensity and quality H¯ ions were selected for acceleration in the cyclotron aiming at the high efficiency extraction by electrostatic deflector. The track- ing calculations were performed by the CBDA code. The electric and magnetic field maps were obtained by the TOSCA/OPERA3D and MERMAID codes. Internal and external injection regimes were tried to select from. The space charge effects of the ions were taken into account in the calculations. The main criteria, imposed in selecting of the op- erational parameters, were good centering, as high as possible energy gain of the ions in the accelerating gaps, the maximal particles transmission through the machine and the best possible beam quality at the final energy. The overall performance of the facility was optimized by adjusting the corresponding parameters of the cyclotron. Simulation of the interface between the cyclotron and the storage ring was performed in order to provide the required intensity and beam quality for injection to the storage ring.

Dr. Evgeny Evgenevich Perepelkin: pevgeny@mail.ru

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