RUPAC2012 - List of Authors (Chesnov, A.)

Paper

Title

Page

Simulation of Beam Dynamics in the Extraction System of the JINR Phasotron

76

S.A. Kostromin, A. Chesnov, S.G. Shirkov
JINR, Dubna, Moscow Region, Russia
L.M. Onischenko
JINR/DLNP, Dubna, Moscow region, Russia

Beam dynamics is studied in the extraction by the regenerative method from the JINR Phasotron (657 MeV, 3 mkA protons) using special complex of computer programs. Parameters of the beam at the deflector entrance are calculated. The beam extraction efficiency is found to be ~40%. The mean movement in the extraction channel is investigated. Calculated beam transverse parameters agree with the experimental ones to accuracy of~20%.

Slides TUBCH02 [2.223 MB]

WEPPC016

Update of Classical Cyclotron U-150 Magnetic System. Simulation and Experiment

478

N.S. Azaryan, Yu.G. Alenitsky, A. Chesnov, O. Lepkina, E. Samsonov, I.M. Sedych, V.L. Smirnov
JINR, Dubna, Moscow Region, Russia
I.R. Gulamov, Z.V. Shukurov, R.A. Umerov, Ya.M. Uzakov
Uzbekistan Academy of Sciences, The Institute of Nuclear Physics, Tashkent, Uzbekistan

Classical cyclotron U-150 located in the Academy of Sciences of the Republic of Uzbekistan, Tashkent, was developed more than 50 years ago in Efremov’s institute for acceleration various particles (p, d, He). For magnetic field re-tuning the current coils are used. Nowadays U-150 is used to accelerate only protons to energy of 15-22 MeV for producing isotopes for medical or industrial applications. In order to save the electrical energy and operating simplification it is proposed to create a decreasing average magnetic field in cyclotron only by means of ferromagnetic parts. To create a negative gradient of the magnetic field steel parts are made and installed in the magnet. Analysis of measurement results showed the possibility of production of the required isotopes in updated U-150 with power economy of about 15%. Experimental irradiation of the target showed that the created field gradient did not provide an achievement of the required proton energy at radius of 64-65 cm. To achieve required energy one correction coil is kept in operation and measured magnetic field showed a satisfactory result. For estimation of possibility of creating the required magnetic field gradient without correction by coils the simulation of the cyclotron magnetic system were done and the results of calculations and its analysis are presented in this paper.

Paper	Title	Page
TUBCH02	Simulation of Beam Dynamics in the Extraction System of the JINR Phasotron	76
	S.A. Kostromin, A. Chesnov, S.G. Shirkov JINR, Dubna, Moscow Region, Russia L.M. Onischenko JINR/DLNP, Dubna, Moscow region, Russia
	Beam dynamics is studied in the extraction by the regenerative method from the JINR Phasotron (657 MeV, 3 mkA protons) using special complex of computer programs. Parameters of the beam at the deflector entrance are calculated. The beam extraction efficiency is found to be ~40%. The mean movement in the extraction channel is investigated. Calculated beam transverse parameters agree with the experimental ones to accuracy of~20%.
	Slides TUBCH02 [2.223 MB]

WEPPC016	Update of Classical Cyclotron U-150 Magnetic System. Simulation and Experiment	478
	N.S. Azaryan, Yu.G. Alenitsky, A. Chesnov, O. Lepkina, E. Samsonov, I.M. Sedych, V.L. Smirnov JINR, Dubna, Moscow Region, Russia I.R. Gulamov, Z.V. Shukurov, R.A. Umerov, Ya.M. Uzakov Uzbekistan Academy of Sciences, The Institute of Nuclear Physics, Tashkent, Uzbekistan
	Classical cyclotron U-150 located in the Academy of Sciences of the Republic of Uzbekistan, Tashkent, was developed more than 50 years ago in Efremov’s institute for acceleration various particles (p, d, He). For magnetic field re-tuning the current coils are used. Nowadays U-150 is used to accelerate only protons to energy of 15-22 MeV for producing isotopes for medical or industrial applications. In order to save the electrical energy and operating simplification it is proposed to create a decreasing average magnetic field in cyclotron only by means of ferromagnetic parts. To create a negative gradient of the magnetic field steel parts are made and installed in the magnet. Analysis of measurement results showed the possibility of production of the required isotopes in updated U-150 with power economy of about 15%. Experimental irradiation of the target showed that the created field gradient did not provide an achievement of the required proton energy at radius of 64-65 cm. To achieve required energy one correction coil is kept in operation and measured magnetic field showed a satisfactory result. For estimation of possibility of creating the required magnetic field gradient without correction by coils the simulation of the cyclotron magnetic system were done and the results of calculations and its analysis are presented in this paper.