CYCLOTRONS 2010 - List of Authors (Kazarinov, N.Yu.)

Paper

Title

Page

Determination of Isochronous Field Using Magnetic Field Map

135

N.Yu. Kazarinov, O.N. Borisov, V.I. Kazacha
JINR, Dubna, Moscow Region, Russia

In this work a new scheme for calculation of a cyclotron isochronous field using the previously calculated or measured map of the cyclotron magnetic field in its median plane is adduced. The calculating map of the cyclotron magnetic field was set by the matrix having the dimensions 201x181. The flutter part of the magnetic field obtained by subtraction of the zero azimuth harmonic from the magnetic field values were calculated in all net nodes. The magnetic rigidity value in the equation for the particle radius versus the angle was replaced by product of the mean radius and mean along the closed orbit magnetic field. The flutter function was interpolated with the help of the third order Lagrange's polynomials using 16 nodes of the net. At every given radius with the help of the nonlinear simplex method of optimization one can find such value of the isochronous field when the particle path is enclosed with accuracy of 10^-9. The results of the fulfilled calculations for the cyclotron DC-110 and their comparison with results of other calculations are given.

FRM1CIO03

IBA-JINR 400 MeV/u Superconducting Cyclotron for Hadron Therapy

404

N.A. Morozov, V. Aleksandrov, S. Gurskiy, G.A. Karamysheva, N.Yu. Kazarinov, S.A. Kostromin, E. Samsonov, V. Shevtsov, G. Shirkov, E. Syresin, A. Tuzikov
JINR, Dubna, Moscow Region, Russia
M. Abs, A. Blondin, Y. Jongen, W.J.G.M. Kleeven, D. Vandeplassche, S. Zaremba
IBA, Louvain-la-Neuve, Belgium
O. Karamyshev
JINR/DLNP, Dubna, Moscow region, Russia

The compact superconducting isochronous cyclotron C400 [1] has been designed by the IBA-JINR collaboration. It will be the first cyclotron in the world capable of delivering protons, carbon and helium ions for cancer treatment. The cyclotron construction is started this year within the framework of the ARCHADE project [2] (Caen, France). ¹²C⁶⁺ and ⁴He²⁺ ions will be accelerated to 400 MeV/u energy and extracted by the electrostatic deflector, H²⁺ ions will be accelerated to the energy of 265 MeV/u and extracted by stripping. The magnet yoke has a diameter of 6.6 m, the total weight of the magnet is about 700 t. The designed magnetic field corresponds to 4.5 T in the hills and 2.45 T in the valleys. Superconducting coils will be enclosed in a cryostat; all other parts of the cyclotron will be warm. Three external ion sources will be mounted on the switching magnet on the injection line located below the cyclotron. The main parameters of the cyclotron, its design, the current status of the development work on the cyclotron systems are presented.
[1] Y.Jongen et al, 'IBA C400 Cyclotron Project for Hadron Therapy', The 18th International Conference on Cyclotrons and their Applications Cyclotrons 2007, Italy 2007.
[2] http://archade.fr/

Slides FRM1CIO03 [1.996 MB]

Paper	Title	Page
MOPCP042	Determination of Isochronous Field Using Magnetic Field Map	135
	N.Yu. Kazarinov, O.N. Borisov, V.I. Kazacha JINR, Dubna, Moscow Region, Russia
	In this work a new scheme for calculation of a cyclotron isochronous field using the previously calculated or measured map of the cyclotron magnetic field in its median plane is adduced. The calculating map of the cyclotron magnetic field was set by the matrix having the dimensions 201x181. The flutter part of the magnetic field obtained by subtraction of the zero azimuth harmonic from the magnetic field values were calculated in all net nodes. The magnetic rigidity value in the equation for the particle radius versus the angle was replaced by product of the mean radius and mean along the closed orbit magnetic field. The flutter function was interpolated with the help of the third order Lagrange's polynomials using 16 nodes of the net. At every given radius with the help of the nonlinear simplex method of optimization one can find such value of the isochronous field when the particle path is enclosed with accuracy of 10^-9. The results of the fulfilled calculations for the cyclotron DC-110 and their comparison with results of other calculations are given.

FRM1CIO03	IBA-JINR 400 MeV/u Superconducting Cyclotron for Hadron Therapy	404
	N.A. Morozov, V. Aleksandrov, S. Gurskiy, G.A. Karamysheva, N.Yu. Kazarinov, S.A. Kostromin, E. Samsonov, V. Shevtsov, G. Shirkov, E. Syresin, A. Tuzikov JINR, Dubna, Moscow Region, Russia M. Abs, A. Blondin, Y. Jongen, W.J.G.M. Kleeven, D. Vandeplassche, S. Zaremba IBA, Louvain-la-Neuve, Belgium O. Karamyshev JINR/DLNP, Dubna, Moscow region, Russia
	The compact superconducting isochronous cyclotron C400 [1] has been designed by the IBA-JINR collaboration. It will be the first cyclotron in the world capable of delivering protons, carbon and helium ions for cancer treatment. The cyclotron construction is started this year within the framework of the ARCHADE project [2] (Caen, France). ¹²C⁶⁺ and ⁴He²⁺ ions will be accelerated to 400 MeV/u energy and extracted by the electrostatic deflector, H²⁺ ions will be accelerated to the energy of 265 MeV/u and extracted by stripping. The magnet yoke has a diameter of 6.6 m, the total weight of the magnet is about 700 t. The designed magnetic field corresponds to 4.5 T in the hills and 2.45 T in the valleys. Superconducting coils will be enclosed in a cryostat; all other parts of the cyclotron will be warm. Three external ion sources will be mounted on the switching magnet on the injection line located below the cyclotron. The main parameters of the cyclotron, its design, the current status of the development work on the cyclotron systems are presented. [1] Y.Jongen et al, 'IBA C400 Cyclotron Project for Hadron Therapy', The 18th International Conference on Cyclotrons and their Applications Cyclotrons 2007, Italy 2007. [2] http://archade.fr/
	Slides FRM1CIO03 [1.996 MB]