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Tytuł artykułu

Modelling of ionization in a spherical hot cavity source

Autorzy
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A Monte Carlo method-based model of hot cavity surface ion source with spherically shaped ionizer is presented. A numerical code enables studies of ion source efficiency as function of extraction voltage, geometry of the ionizer and its temperature, the size of extraction aperture and many other factors. A novel configuration of surface ion source is proposed and discussed – the efficiency of the modified ion source could be much higher than that of currently used sources. In order to take advantage of multiprocessor computer or cluster the code has been made parallel. Two different strategies of parallelization are considered. Results of hard and weak scaling tests are presented, showing very good scalability of the code up to 16 CPUs.
Rocznik
Tom
Strony
179--192
Opis fizyczny
. Bibliogr. 34 poz., rys.
Twórcy
autor
  • Institute of Physics, Maria Curie Sklodowska University in Lublin
Bibliografia
  • [1] Wolf B. (ed.) Handbook of Ion Sources. CRC Press Inc. 1995.
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  • [5] Kirchner R. Review of ISOL target–ion-source systems. Nucl. Instrum. and Meth. B 204, 2003, pp. 179-190
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  • [9] Alton G.D., Welton R. F., Cui B., Murray S. N., Mills G.D. A New Concept of Positive (Negative) Surface Ionization Surface Equipped with a High Porosity Ionizer. Nucl. Instrum. and Meth B 142, 1998, pp. 578-591
  • [10] Alton G. D., Liu Y., Murray S. N., Mills G. D. and Zaim H. Efficient negative-ion sources for radioactive ion beam applications, Rev. Sci. Instrum. 73, 2003, p. 796
  • [11] Alton G.D., Liu Y., Zaim H. and Murray S. N. An efficient negative surface ionization source for RIB generation. Nucl. Instr. and Meth. B 211, 2003, pp. 425-435
  • [12] Latuszyński A., Raiko V.I. Studies of the ion source with surface-volume ionization, Nucl. Instrum. Meth. 125, 1975, pp. 61-66
  • [13] Afanas’ev V.P., Obukhov V.A., Raiko V.I., Thermoionization efficiency in the ion source cavity. Nucl. Instrum. and Meth. 145, 1977, pp. 533-536
  • [14] Kirchner R. Progress in ion source development for on-line separators. Nucl. Instrum. and Meth. 186, 1981, pp. 275-293
  • [15] Huyse M. Ionization in a hot cavity. Nucl. Instrum. and Meth. 215, 1983, pp. 1-5
  • [16] Kirchner R. On the thermoionization in hot cavities. Nucl. Instrum. Meth. A 292, 1990, pp. 203-208
  • [17] Zhang Y., Alton G.D. Monte-Carlo simulation of complex vapor-transport systems for RIB applications. Nucl. Instr. and Meth. B 241, 2005, pp. 947-952
  • [18] Mustapha B., Nolen J.A. Simulations of effusion from ISOL target/ion source systems. Nucl. Instr. and Meth. A 521, 2004, pp. 59-64
  • [19] Latuszyński A., Pyszniak K., Droździel A., Turek M., Mączka D., Meldizon J. Atom ionization process in the thermoionization ion source. Vacuum 81, 2007, pp. 1150-1153
  • [20] Turek M., Pyszniak K., Drozdziel A. Influence of electron impact ionization on the efficiency of thermoemission ion source. Vacuum 83, 2009, pp. S260-S263
  • [21] MPI Manual [online] www.mcs.anl.gov/mpi/ [access:2010]
  • [22] Brown I.G. (ed.) The Physics and Technology of Ion Sources, Wiley-VCH, 2004
  • [23] Avdienko A., Malev M.D. Poisoning of LaB6 cathodes. Vacuum 27, 1977, pp. 583-588
  • [24] Alton G.D., Johnson M.T., Mills G.D. A simple positive/negative surface ionization source. Nucl. Instr. and Meth. A 328, 1993, pp. 154-159
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  • [26] Menna M., Catherall R., Lettry J., Noah E., Stora T., and the ISOLDE collaboration. R&D for the development of negative ion beams of halogens. Nucl. Instrum. and Meth. B 266, 2008, pp. 4391-4393
  • [27] Southon J.R., Roberts M.L. Ten years of sourcery at CAMS/LLNL – Evolution of a Cs ion source. Nucl. Instr. and Meth. 172, 2000, pp. 257-261
  • [28] Brown T.A., Roberts M.L., Southon J.R. Ion-source modeling and improved performance of the CAMS high-intensity Cs-sputter ion source. Nucl. Instr. and Meth. B 172, 2000, pp. 344-349
  • [29] Han B.X., Southon J.R., Roberts M.L., von Reden K.F. Computer simulation of MCSNICS for performance improvements. Nucl. Instr. and Meth. B 261, 2007, pp. 588-593.
  • [30] Hockney R., Eastwood J. Computer Simulation Using Particles, Mir, 1987
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  • [32] Latuszyński A., Mączka D. High temperature cavity thermo-ionizer. Vacuum 51, 1998, pp. 109-112
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  • [34] Amdahl G. The validity of the single processor approach to achieving large scale computing capabilities. AFIPS Conference Proceedings 30, 1967, pp. 483-485
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPS3-0022-0073
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