Evaluation of shimmed DECY-13 MeV Cyclotron Magnet Using H- Beam Tracking Simulation

Idrus Abdul Kudus, Mirza Satriawan


Abstract Using OPERA3DTM, the magnet poles shimming that provide an isochronous magnetic field in DECY-13 cyclotron was designed and calculated. The shimmed magnet poles as designed were placed in the magnet and the distribution of the magnetic field in the magnet axis direction (Bz) was measured in radial ( x and y) directions using 2 probes covering x=0 to 480 mm for one probe and 481 to 960 mm for the other, and y=0 to 960 mm, all were done at z=0 in 9 hours of scanning at 5 mm steps. This paper describes the interpolation and extrapolation to obtain data for magnetic field components (Bx, By,Bz) at 1 mm resolution and at z?0 as required for beam tracking simulations. The tracking results are used to evaluate the distribution of the shimmed magnetic fields of DECY-13. The program for the interpolation and extrapolation was written and run using a free software Scilab 5.4.1, and tested against OPERA3DTM design data. The beam can reach final energy of 13 MeV when both data was applying in the beam tracking simulation.. However when the measured data was used, the final energy of the beam reached only 3 MeV, meaning that at the place where that energy was reached the magnetic field is no longer is of isochronous and the shimming of the magnetic poles must be improved or redesigned to reach the final beam energy of 13 MeV.

Key words: isochronous, DECY-13 cyclotron, Scilab 5.4.1, interpolation and extrapolation, beam tracking simulation

Full Text:



Silakhudin, S. Santosa, Conceptual Design Study of 13 MeV Proton Cyclotron, Atom Indonesia 38 (2012) 7-14.

Taufik, Design of 13 MeV Proton Cyclotron Magnet using Opera3D Software, Thesis, GadjahMada University (2013).

Taufik, A. Hermanto, P. Anggraita, S. Santosa, Determination of Magnet Specification of 13 MeV Proton Cyclotron Based on Opera 3D, Atom Indonesia 40 (2014) 69-75.

I. A. Kudus, Taufik, K. Wibowo, F. S. Permana, Comparation of Contruction and Simulation Result from Isochronus of Cyclotron Magnet DECY-13, Ganendra Journal of Nuclear Science and Technology 20 (2017) 83-90.

E. Mulyani, Design of Central Region for 13 MeV Proton Cyclotron, Thesis, Gadjah Mada University (2013).

A. Pramudita, E. Mulyani, I.A. Kudus, Simulations of Beam Quality in a 13 MeV PET Cyclotron, Atom Indonesia 41 (2015) 145-149.

D.H. An, J.S. Chai, H.S. Chang, Beam Trajectory Simulations for KIRAMS-13 Cyclotron, Proceedings of the 17thInternational Conference on Cyclotrons and Their Applications, Tokyo 18-22 October 2004 (2005) 447-449.

I.A. Kudus, Magnetic field of DECY-13 from Numerical Extrapolation of the Measurement Result for Beam Trajectory Simulations, Thesis, Gadjah Mada University (2019).

P. Anggraita, B. Santosa, Taufik, E. Mulyani,F.I. Diah, Beam Tracking Simulation in the Central Region of a 13 MeV PET Cyclotron, AIP Conf. Proc.1454 (2012) 178.

Idrus Abdul Kudus, Silahuddin, Pramudita Anggraita, Mitra Satriawan, Magnetic Field of DECY-13 from Numerical Extrapolation of the Measurement Result for Beam Trajectory Simulations in Central Region, IOP Journal of Physics Conference Series 2019 (to be published)

R.H. Landau, M.J. Paez, C.C. Bordeianu, A Survey Computational Physics, Princeton University Press (2010) 178.

DOI: https://doi.org/10.35895/jpsi.v1i2.164


  • There are currently no refbacks.

Copyright (c) 2020 Journal of the Physical Society of Indonesia

In colaboration with:
PSI - Physical Society of Indonesia
Jl. Kembar Mas Barat no. 31 Bandung Indonesia
mail: psi@fisika.or.id