RUPAC2012 - List of Authors (Samsonov, E.)

Paper

Title

Page

Development of the IBA-JINR Cyclotron C235-V3 for Dimitrovgrad Hospital Center of the Proton Therapy

221

S.A. Kostromin, S. Gurskiy, G.A. Karamysheva, M.Y. Kazarinov, S.A. Korovkin, S.P. Mokrenko, N.A. Morozov, A.G. Olshevsky, V.M. Romanov, E. Samsonov, N.G. Shakun, G. Shirkov, S.G. Shirkov, E. Syresin
JINR, Dubna, Moscow Region, Russia
P. Cahay, Y. Jongen, Y. Paradis
IBA, Louvain-la-Neuve, Belgium

The Dimitrovgrad project, the first Russian hospital center of the proton therapy, was approved in 2010. The JINR-IBA collaboration developed and constructed the C235-V3 proton cyclotron for this center. The assembly and the beam tests of the machine were done in 2011-2012 in special experimental hall in JINR. This cyclotron is a substantially modified version C235-V3 of the IBA C235 serial cyclotron. C235-V3 has the improved extraction system which was constructed and tested. This system allows raise the extraction efficiency up to 77% from 50% in comparison with serial C235. Special mapping system (for Br-component) of the magnetic field was developed and constructed by JINR for the shimming of the Br-field in the middle plane of the cyclotron. Tests with accelerated and extracted beam were performed in August 2012 in JINR. Beam vertical motion in the cyclotron is in the acceptable limits (ΔZbeam≤3 mm). Transmission from r=300mm to 10³⁰ is 72% without beam cutting diaphragms. This allows reduce irradiation dose of the machine elements in comparison with serial C235. Extraction efficiency is 62%. Total efficiency of the machine is 45%. Recommendations are formulated to modify the magnetic system and reduce sensitivity of the machine to the magnetic field imperfections. Most of changes concerned with the increasing of the vertical focusing at the final radii.

Slides FRBCH01 [6.282 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
FRBCH01	Development of the IBA-JINR Cyclotron C235-V3 for Dimitrovgrad Hospital Center of the Proton Therapy	221
	S.A. Kostromin, S. Gurskiy, G.A. Karamysheva, M.Y. Kazarinov, S.A. Korovkin, S.P. Mokrenko, N.A. Morozov, A.G. Olshevsky, V.M. Romanov, E. Samsonov, N.G. Shakun, G. Shirkov, S.G. Shirkov, E. Syresin JINR, Dubna, Moscow Region, Russia P. Cahay, Y. Jongen, Y. Paradis IBA, Louvain-la-Neuve, Belgium
	The Dimitrovgrad project, the first Russian hospital center of the proton therapy, was approved in 2010. The JINR-IBA collaboration developed and constructed the C235-V3 proton cyclotron for this center. The assembly and the beam tests of the machine were done in 2011-2012 in special experimental hall in JINR. This cyclotron is a substantially modified version C235-V3 of the IBA C235 serial cyclotron. C235-V3 has the improved extraction system which was constructed and tested. This system allows raise the extraction efficiency up to 77% from 50% in comparison with serial C235. Special mapping system (for Br-component) of the magnetic field was developed and constructed by JINR for the shimming of the Br-field in the middle plane of the cyclotron. Tests with accelerated and extracted beam were performed in August 2012 in JINR. Beam vertical motion in the cyclotron is in the acceptable limits (ΔZbeam≤3 mm). Transmission from r=300mm to 10³⁰ is 72% without beam cutting diaphragms. This allows reduce irradiation dose of the machine elements in comparison with serial C235. Extraction efficiency is 62%. Total efficiency of the machine is 45%. Recommendations are formulated to modify the magnetic system and reduce sensitivity of the machine to the magnetic field imperfections. Most of changes concerned with the increasing of the vertical focusing at the final radii.
	Slides FRBCH01 [6.282 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.