The Effect of the Configuration Type of Magnetic Magnets and Electric Electrodes on Thomson Ion Mass Spectrometer System

Document Type : Original Article

Authors

Plasma Physics and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute, P.O. Box 14155-1339, Tehran, Iran

10.22052/rsm.2026.257772.1152

Abstract

In this paper, a 3D comparative study of the Thomson ion mass spectrometer system with two different types of deflector configurations by COMSOL software is presented. In this study, two types of separate and common deflectors were used, in which magnetic magnets and electric electrodes were used separately or together, respectively, with same geometric specifications. In this simulation, in magnetic field of 0.248 Tesla and an electric field of 300 kV/m, we will examine the behavior of hydrogen, nitrogen, and carbon ions with energy range of 20 to 60 keV. Considering the parabolic traces at the same distance from the deflector for both cases, the advantages and disadvantages of both types of systems will be examined.

Keywords


  1. H. R. Kaufman, S. R. Raymond. Ion source design for industrial applications. AIAA J. 20 (6) (1982) 745-760.
  2. I. G. Brown. The Physics and Technology of Ion Sources. John Wiley & Sons, 2004.
  3. N. V. Gavrilov, G. A. Mesyats, S. P. Nikulin, G. V. Radkovskii, A. Elkind, A. J. Perry, J. R. Treglio. New broad beam gas ion source for industrial application. J. Vacuum Sci. Techno. A: Vacuum Surfaces Films14 (3) (1996) 1050-1055.
  4. V. V. Zhurin. Industrial Ion Sources: Broadbeam Gridless Ion Source Technology. John Wiley & Sons, 2012.
  5. A. E. Giannakopulos, B. Thomas, A. W. Colburn, D. J. Reynolds, E. N. Raptakis, A. A. Makarov, P. J. Derrick. Tandem time-of-flight mass spectrometer (TOF-TOF) with a quadratic-field ion mirror. Rev. Sci. Instrum. 73 (5) (2002) 2115-2123.
  6. A. Alejo, D. Gwynne, D. Doria, H. Ahmed, D.C. Carroll, R. J. Clarke, D. Neely, G. G. Scott, M. Borghesi, S. Kar. Recent developments in the Thomson Parabola Spectrometer diagnostic for laser-driven multi-species ion sources.J. Instrument. 11 (10) (2016) C10005.
  7. J. A. Cobble, K. A. Flippo, D. T. Offermann, F. E. Lopez, J. A. Oertel, D. Mastrosimone, S. A. Letzring, N. Sinenian. High-resolution Thomson parabola for ion analysis. Rev. Sci. Instrum. 82 (11) (2011).
  8. J. Teng, S. K. He, Z. G. Deng, B. Zhang, W. Hong, Z. M. Zhang, B. Zhu, Y. Q. Gu. A compact high resolution Thomson parabola spectrometer based on Halbach dipole magnets. Nucl. Instrum. Methods Phys. Res. Sec. A: Accelerators, Spectrometers, Detectors and Associated Equipment 935 (2019) 30-34.
  9. M. Salvadori, M. Sciscio, G. Di Giorgio, M. Cipriani, P. L. Andreoli, G. Cristofari, R. De Angelis, D. Giulietti, F. Consoli, D. Margarone. Univocal discrimination of α particles produced by 11B (p, α) 2α fusions in laser-matter experiments by advanced Thomson spectrometry. Laser Particle Beams2023 (2023) e6.
  10. C. Salgado-López, J. I. Apiñaniz, J. L. Henares, J. A. Pérez-Hernández, D. de Luis, L. Volpe, G. Gatti. Angular-resolved Thomson parabola spectrometer for laser-driven ion accelerators. Sensors22 (9) (2022) 3239.
  11. D. Jung, R. Hörlein, D. Kiefer, S. Letzring, D. C. Gautier, U. Schramm, C. Hübsch, R. Öhm, B. J. Albright, J. C. Fernandez, D. Habs. Development of a high resolution and high dispersion Thomson parabola. Rev. Sci. Instrum.82 (1) (2011).
  12. D. Gwynne, S. Kar, D. Doria, H. Ahmed, M. Cerchez, J. Fernandez, R. J. Gray, J. S. Green, F. Hanton, D. A. MacLellan, P. McKenna. Modified Thomson spectrometer design for high energy, multi-species ion sources. Rev. Sci. Instrum.85 (3) (2014).