Draft:Robert Budny

• Comment: You should see WP:REFBEG and improve your referencing technique. Hitro talk 18:02, 16 November 2024 (UTC)

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'Robert Budny is an American physicist known for his contributions to the fields of theoretical elementary particle physics and magnetically confined tokamak fusion.

Early life and education

Budny studied abstract mathematics at the Massachusetts Institute of Technology (MIT) before pursuing theoretical physics at the University of Paris (Faculte des Sciences, Institute Curie) and the University of Maryland. His Ph.D. thesis, supervised by George Snow, focused on deep inelastic neutrino scattering, measured in bubble chambers at particle accelerators such as in CERN (Geneva, Switzerland).

Military service

Budny was commissioned into the U.S. Navy and served at the headquarters of DASA (Defense Atomic Support Agency) in the Pentagon for two years.

Scientific contributions

After completing his PhD, Budny engaged in postdoctoral research and teaching in the Departments of Theoretical Physics at the University of Oxford, Stanford University, Rockefeller University, and Princeton University.

His research in Theoretical elementary particle physics on Electroweak interactions included neutrino scattering.^[1][2] and effects of the W⁰ particles in electron-positron annihilations^{[3][4][5][6][7][8][9][10][11][12][13][14]} Results for the calculated cross sections were used to measure properties of the weakly interacting vector boson W⁰ including its mass, spin, and decay rate.

Exotic weak effects were calculated including Electric-and weak magnetic-dipole-moment effects in in e⁺ – e^– annihilations. The computed possible weak corrections to these annihilations are predicted to be too small to be observed in present day experiments^[14].

An extension of the Standard Model, which includes the observed SU₂ ⊗ U₁ symmetry for weak interactions, was studied. This Standard Model has left-chirality (Vector-Axial-vector) for the weak interactions. The extension to SU_2,L ⊗ SU_2,R ⊗ U₁ symmetry^[15] adds right-chirality (Vector+Axial-vector), becoming left-right symmetric predicting new massive particles, which could be observable at very high energies.

Tokamak plasmas

Exotic weak effects were calculated including Electric-and weak magnetic-dipole-moment effects in in e⁺ - e^– annihilations. The computed possible weak corrections to these annhiliations are predicted to be too small to be observed in present day experiments ^[14].

An extension of the Standard Model, which includes the observed SU₂ ⊗U₁ symmetry for weak interactions, was studied. This Standard Model has left-chirality (Vector-Axial-vector) for the weak interactions. The extension to SU_2,L⊗ SU_2,R⊗U₁ symmetry ^[15] adds right-chirality (Vector+Axial-vector), becoming left-right symmetric predicting new massive particles, which could be observable at very high energies.

Budny joined the Princeton Plasma Physics Laboratory, where his research focused on fusion energy. He participated in experiments and their analysis on the TFTR (Tokamak Fusion Test Reactor). He used the TRANSP computer code^{[16] [17] [18] [19] [20]} to accurately predict the fusion energy production in deuterium-tritium (DT) fusion experiments before the start in these experiments started in 1994. This large code performs integrated modeling combining multiple physics effects to calculate interactions and their synergies. These experiments were the world's first using DT to produce high rates of fusion power^[20] (in the Megawatt range).

Budny collaborated with experiments at other tokamak research facilities, including JET (Joint European Tokamak)^{[20] [21] [22] [23] [24] [25]}. The experiments with DT plasmas in 1997 achieved world record fusion energy production in the core ^[20]. He also collaborated with experiments at other tokamak research facilities including JT-60U (Tokai, Japan), DIII-D (San Diego, CA)^{[26] [27]}, Tore Supra (Cadarache, France) ^{[28] [29]} HL-2A (Chengdu, China) ^[30].

Budny researched predictions of fusion performance for ITER (International Thermonuclear Experimental Reactor) which is currently under construction in the south of France, aimed at demonstrating the feasibility of fusion power on a commercial scale. He performed the first detailed integrated simulations^{[20] [31] [32] [33]} of planned ITER discharges to predict the DT fusion rates. The TRANSP computer code in predictive mode uses reduced theory based models of temperatures. The results suggest that ITER should be capable of achieving its goals for fusion yield if it is built to specifications, and if unknown as long as no as yet unknown physics presents handicaps.

References

1. R. Budny, (1971) "Highly Inelastic Neutrino-Nucleon Scattering", Physics Review D, 7, 1271
2. R. Budny, (1977) "Reconciliation of deep-inelastic neutrino and antineutrino measurements with the four-flavor parton model", Physical Review D 15, 3227
3. R. Budny, (1975) "Detailed W⁰ effects in ⁺ e^–", Physics Letters B 55, 227
4. R. Budny, (1975) "Hadronic vacuum polarization effects in Bhabha and Moller scattering", Physics Letters B 59, 168
5. R. Budny and A. McDonald, (1974) "W⁰ effects in inclusive e⁺ e^– annihilation", Physics Letters B 48, 423
6. R Budny (1975) "Weak effects in e^– e^– → e^– e^–", Physics Letters B 58 338
7. R. Budny, A McDonald (1974) "W⁰ effects in Bhabha scattering and beam polarization", Physical Review D 10, 3107 ^
8. R. Budny, (1979) "W⁰ effects in electron-positron collisions on l- resonances" Physical Review D 20 2763
9. R. Budny, (1977) "Reconciliation of deep-inelastic neutrino and antineutrino measurements with the four-flavor parton model", Physical Review D, 15(11), 3227
10. R. Budny, A. McDonald, (1977) "Can couplings of charged heavy leptons to the W⁰ be measured?", Physical Review D 16 3150
11. R. Budny, (1973) "Tests for general models of deep inelastic lepton scattering" Il Nuovo Cimento A 15 173
12. R. Budny and T. Hagiwara, (1978) "Deep-inelastic neutral-current cross sections", Physical Review D 17 1758.
13. R. Budny, (1974) "Effects of the W⁰ in high energy annihilation", Proceedings of the sixth international symposium on electron and photon interactions.
14. R. Budny, B. Kayser, and J. Primack (1997), "Electric-and weak magnetic-dipole-moment effects in e⁺ e^– → l⁺ l^–", Physical Review D 15 1222
15. M.A.B. Beg, R. Budny, R. Mohapatra, A. Sirlin, (1977) "Manifest left-right symmetry and its experimental consequences", Physical Review Letters, 38 1252
16. R. Budny, (1994) "A standard DT supershot simulation", Nuclear Fusion 34 1247.
17. R. Budny, (1995) "Simulations of alpha parameters in a TFTR DT supershot with high fusion power", Nuclear Fusion 35 1497.
18. R. Budny, (2011) "Comment on Li pellet conditioning in TFTR", Physics of Plasmas 18 092506.
19. R. Budny, (1992) "Particle Balance in a TFTR supershot", Journal of Nuclear Materials 196–198 462.
20. R. Budny, J.G. Cordey and TFTR Team and JET Contributors, (2016) "Core fusion power gain and alpha heating in JET, TFTR, and ITER", Nuclear Fusion 56 056002.
21. R. Budny and JET contributors, (2016) "Alpha heating and isotopic mass effects in JET plasmas with sawteeth", Nuclear Fusion Vol 56 036013.
22. R. Budny and JET Contributors, (2018) "Alpha heating, isotopic mass, and fast ion effects in deuterium-tritium experiments", Nuclear Fusion 58 096011.
23. R. Budny, B. Alper, D.N. Borba, et. al., (2002) "Local physics basis of confinement degradation in JET ELMy H mode plasmas and implications for tokamak reactors", Nuclear Fusion 42 66.
24. R. Budny, et. al., (2000) "Local transport in JET ELMy H-mode discharges with H, D, DT, and T isotopes", Physics of Plasmas 7 5038.
25. R. Budny, R. Andre, A. Becoulet,et. al., (2002) "Microturbulence and flow shear in high-performance JET ITB plasma", Plasma Physics and Controlled Fusion 44 1215.
26. M. Okabayashi, G. Matsunaga, et. al., (2011) "Off-axis fishbone-like instability and excitation of resistive wall modes in JT-60U and DIII-D", Physics of Plasmas 18 056112.
27. W. M. Solomon, et. al. (2009) "Advances in understanding the generation and evolution of the toroidal rotation profile on DIII-D, Nuclear Fusion 49 085005.
28. G.T. Hoang et al., (2001) "Experimental Determination of Critical Threshold in Electron Transport in Tore Supra", Physical Review Letters 87 4593.
29. GT Hoang et al., (1994) "Improved confinement in high Li lower hybrid driven steady state plasmas in TORE SUPRA", Nuclear Fusion 34 75.
30. Q.D. Gao, R. Budny, F. Li and J. Zhang, (2003) "Predictive study of high performance scenarios in HL-2A tokamak", Nuclear Fusion 43 982.
31. "Predictions of H-mode performance in ITER R", Budny, R. Andre, G. Bateman", et. al., (2008) Nuclear Fusion 48 075005.
32. R. Budny, L. Berry, R. Bilato, et al., (2012) "Benchmarking full-wave ICRH solvers for ITER", Nuclear Fusion 52 023023.
33. R. Budny (2012) "Alpha heating in ITER L-mode and H-mode plasmas", Nuclear Fusion 52 013001.