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Improvement and Development of the JINR Phasotron
for Fundamental and Applied Research

Scientific Programme:

1. Upgrade of the Phasotron and its beam channels to increase the secondary beam intensity by a factor of 510. Construction of a new proton beam channel for the electronuclear process investigation.
2. Development of the Phasotron's medical beam channels.
3. Design of the external injection into the Phasotron aimed at increasing its internal beam intensity up to 50~µA.
4. Design of the 15-MeV isochronous sector cyclotron as an injector of the 1-GeV cyclotron complex.
5. New development of cyclotrons in the JINR Member States (AIC--144 Cracow, RIC--30 Tver).
6. Development of digital and analogue electronic systems for automation of the Phasotron and experimental installations.

• Installation of the forward part of the beam lines of the Phasotron. Conseptual design of the proton channel for electronuclear research.
• Physics grounds for design of proton radiography and Li target.
• Modeling of the beam dynamics with space charge under external injection in the Phasotron. Calculation of the upgraded beam extraction system with extra local magnetic field inhomogeneity.
• Development of software and calculation of dynamics of the high-current beam in the cyclotron-injector. Modeling of the magnetic and HF systems of the accelerator. Choice of the arrangement and properties of the main systems for the request for proposal.
• Adjustment and optimization of the cyclotron AIC-144 together with the accelerator department of INP (Cracow). Shimming of the 1st harmonic of the magnetic field in the cyclotron RIC-30 to improve beam parameters in the central region of the cyclotron.

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