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Neutron spectrometry in compact ignition experiments

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Il Nuovo Cimento D

Summary

The role of neutron spectrometry is discussed as a diagnostics of plasmas of compact ignition experiments. The situation with regard to instrumentation (including diagnostic capabilities and limitations) is reviewed on the basis of existing experience and new solutions are proposed as required by compact-plasma observations. Especially, the question of time resolution is addressed and a dedicated spectrometer system is devised to make use of the high neutron fluxes expected for the nuclear-burn phase of compact plasmas. It is shown that a system of three neutron spectrometers can provide adequate data on ion temperature of D and DT plasmas over a range of plasma conditions of interest and with the required accuracy. The diagnostic output from this neutron spectrometer system is presented especially with regard to flash ignition studies.

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References

  1. B. Rose, A. E. Taylor andE. Wood:Nature,181, 1630 (1958).

    Article  Google Scholar 

  2. W. B. Ard, M. C. Becker, R. A. Dandl, H. O. Eason, A. C. England andR. J. Kerr:Phys. Rev. Lett.,10, 87 (1963).

    Article  ADS  Google Scholar 

  3. L. A. Artsimovitch:Nucl. Fusion,12, 215 (1972);Pis’ma Ž. Ėksp. Teor. Fiz.,10, 130 (1969).

    Google Scholar 

  4. J. D. Strachan, P. Colestock, H. Eubank, L. Grisham, J. Hovey, G. Schilling, L. Stewart, W. Stodiek, R. Stooksberry andK. M. Young:Nature,279, 626 (1979).

    Article  ADS  Google Scholar 

  5. F. Wagner, G. Becker, K. Behringer et al.: inPlasma Physics and Controlled Nuclear Fusion Research, Proceedings of the IX IAEA Conference, Baltimore, 1982, Vol.1 (IAEA, 1983), p. 43.

  6. W. A. Fisher, S. H. Chen, D. Gwinn andR. R. Parker:Nucl. Instrum. Methods,219, 179 (1984).

    Article  Google Scholar 

  7. Commission of the European Communities, The JET Project. Scientific and Technical Developments, 1976, Rep. EUR-5791e, CEC, Brussels (1977);P.-H. Rebut andB. E. Keen:Fusion Technol.,11, 13 (1987).

    Google Scholar 

  8. R. J. Hawryluk, V. Arunasalam, M. G. Bell et al.: inPlasma Physics and Nuclear Fusion Research, Proceedings of the XI IAEA Conference, London, 1984, Vol.2 (IAEA, 1985), p. 93.

  9. B. Coppi andF. Pegoraro:Nuovo Cimento D,9, 691 (1987).

    Google Scholar 

  10. F. Engelmann:Comments Plasma Phys. Controlled Fusion,13, 119 (1990).

    Google Scholar 

  11. V. Mukhovatov:Rev. Sci. Instrum,61, 3241 (1990);V. Mukhovatov et al.: to appear inPlasma Physics and Nuclear Fusion Research, Proceedings of the XIII IAEA Conference, Washington, 1990 (IAEA, 1991).

    Article  ADS  Google Scholar 

  12. B. Coppi, M. Nassi andL. E. Sugyiama:Phys. Scripta,45, 112 (1991).

    ADS  Google Scholar 

  13. J. Källne: Uppsala University Neutron Physics Report UU-NF #01/91, Uppsala, Sweden (1991) and NET Physics Memo PM90-003, Garching, Germany (1991).

  14. G. Gamow:Phys. Rev.,53, 598 (1938);L. I. Schiff:Quantum Mechanics (McGraw Hill, New York, N.Y., 1949), p. 117.

    ADS  Google Scholar 

  15. A. Peres:J. Appl. Phys.,50, 569 (1979).

    Article  Google Scholar 

  16. H.-S. Bosh andG. M. Hale: inControlled Fusion and Plasma Heating, Proceedings of the XVII European Conference, Amsterdam, 1990, Vol.14 B, Part II (European Physical Society, 1990), p. 873;G. M. Hale, R. E. Brown andN. Jarmie:Phys. Rev. Lett.,59, 763 (1987).

  17. G. Lehner andF. Pohl:Z. Phys.,207, 38 (1967).

    Google Scholar 

  18. H. Brisk:Plasma Phys.,15, 611 (1973).

    Article  ADS  Google Scholar 

  19. G. Gorini, M. Hone, O. N.Jarvis et al.: inBasic Physical Processes of Toroidal Fusion Plasmas, Proceedings of the Varenna Workshop, 1985, Vol.2 (CEC, Brussels, 1986), p. 699.

    Google Scholar 

  20. M. J. Loughlin: inDiagnostics for Contemporary Fusion Experiments, Proceedings of the Varenna Workshop, 1991, ISPP-9 (Editrice Compositori, Bologna, 1991), p. 1043.

    Google Scholar 

  21. K.-D. Zastrow, H. W. Morsi, M. Danielsson, M. G. von Hellerman, E. Källne, R. König, W. Mandl andH. P. Summers:Deduction of Central Plasma Parameters from Line-of-Sight Averaged Spectroscopic Observations, Rep. JET-P(90)18, JET Joint Undertaking, Abingdon, UK (1990), submitted for publication inPhys. Rev. A;M. Danielsson, M. G. von Hellerman, E. Källne, W. Mandl, H. W. Morsi, H. P. Summers andK.-D. Zastrow:On Comparison of Spectroscopically Deduced Central Ion Temperatures and Plasma Rotation at JET, Rep. JET-P(91)19, JET Joint Undertaking, Abindon, UK (1991), submitted for publication inRev. Sci. Instrum.

    Google Scholar 

  22. J. Scheffel:Nucl. Instrum. Methods A,224, 519 (1984).

    Article  Google Scholar 

  23. W. W. Heidbrink:Nucl. Instrum. Methods A,236, 380 (1985).

    Article  ADS  Google Scholar 

  24. D. Slaughter:Rev. Sci. Instrum.,57, 1751 (1986);60, 552 (1989).

    Article  ADS  Google Scholar 

  25. S. Shalev andJ. Cuttler:Trans. Am. Nucl. Soc.,14, 373 (1971).

    Google Scholar 

  26. M. J. Loughlin, J. M. Adams, N. Hawkes et al.:Nucl. Instrum. Methods A,281, 184 (1989).

    Article  ADS  Google Scholar 

  27. O. N. Jarvis, S. Corti, G. Gorini et al.: inControlled Fusion and Plasma Heating, Proceedings of the XIV European Conference, Madrid, Spain, 1987, Vol.11D, Part III (European Physical Society, 1987), p. 1220.

  28. H. Franz, W. Rudolph, H. Ohm et al.:Nucl. Instrum Methods,144, 253 (1977).

    Article  Google Scholar 

  29. J. B. Marion andJ. L. Fowler:Fast Neutron Physics, part 1 (Interscience Publ., 1963).

  30. T. Elevant, D. Aronsson, P. van Belle, G. Grosshoeg, M. Hoek, M. Olsson andG. Sadler:The JET Time-of-Flight Spectrometer, Rep. JET-P(89)76, JET Joint Undertaking, Abingdon, UK (1989).

    Google Scholar 

  31. G. Bracco, S. Corti, V. Zanza et al.:First Results from JET Neutral Particle Analyser (NPA), Rep. JET-IR(84)04, JET Joint Undertaking, Abingdon, UK (1984).

    Google Scholar 

  32. R. Bartiromo, F. Bombarda, R. Giannella, S. Mantovani, L. Panaccione andG. Pizzicaroli:Rev. Sci. Instrum.,60, 237 (1989).

    Article  ADS  Google Scholar 

  33. H. Eubank, R. J. Goldston, V. Arunasalam et al.: inPlasma Physics and Controlled Nuclear Fusion Research, Proceedings of the VII IAEA Conference, Innsbruck, 1979, Vol.1 (International Atomic Energy Agency, 1979), p. 167.

  34. H. Weisen, M. von Hellermann, A. Boileau, L. D. Horton, W. Mandl andH. P. Summers:Nucl. Fusion,29, 2187 (1989).

    Google Scholar 

  35. G. Grosshög, D. Aronsson, K.-H. Beimer, R. Rydz, N. G. Sjöstrand, L. O. Pekkari andÖ. Skeppstedt:Nucl. Instrum. Methods A,249, 468 (1986).

    Article  ADS  Google Scholar 

  36. O. N. Jarvis: inDiagnostics for Contemporary Fusion Experiments, Proceedings of Varenna Workshop, 1991, ISPP-9 (Editrice Compositori, Bologna, 1991), p. 541.

    Google Scholar 

  37. G. Grosshög, D. Aronsson, K.-H. Beimer et al.: TANSY-a Neutron Spectrometer for Fusion Plasma Diagnostics, Chalmers University of Technology Report CTH-RF(1985) ISSN 0281-9775;G. Grosshög, D. Aronsson, K.-H. Beimer et al.: inProceedings of the III JET Workshop on Neutron and Charged Particle Diagnostics, Rep. JET-IR(86)04, 54, JET Joint Undertaking, Abingdon, UK (1985).

  38. J. Källne:Comments Plasma Phys. Controlled Fusion,12, 235 (1989);J. Kallne:Neutron Measurements in the Study of Fusion Plasma Physics with Tokamaks, Rep. PTP 88/11, Massachusetts Institute of Technology, Cambridge, Massachusetts (1988).

    Google Scholar 

  39. J. Källne, G. Gorini, O. N. Jarvis, G. Martin, V. Merlo, G. Sadler andP. van Belle:Phys. Scripta, T16, 160 (1987);J. Källne andTh. Elevant:Neutron Time-of-Flight Spectrometer for Diagnostics of D-T Fusion Plasma, Rep. JET-P(85)03, JET Joint Undertaking, Abingdon, UK (1985).

    Google Scholar 

  40. J. Källne, H. A. Thiessen andA. Obst:Scintillators and Photomultipliers-Some Tests for EPICS Tune-Up, Rep. LA-6536-MS, Los Alamos Scientific Laboratory, Los Alamos, New Mexico (1976).

    Google Scholar 

  41. G. Gorini, J. Källne andS. Rollet: inControlled Fusion and Plasma Heating, Proceedings of the XVII European Conference, Amsterdam, 1990, Vol.14B, Part IV (European Physical Society, 1990), p. 1652.

  42. G. Gorini andN. Gottardi:Nuovo Cimento D,13, 319 (1990).

    Google Scholar 

  43. J. Källne andG. Gorini:α-Particle Information on Burning DtPlasmas from Neutron Measurements, accepted for publication inFusion Technol. (1991).

  44. J. Källne, G. Gorini andP. Batistoni:Rev. Sci. Instrum.,62, 2871 (1991).

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Dipartimento di Fisica dell’Università, I-20133, Milano, Italia

    G. Gorini

  2. Institutionen för Neutronforskning, Uppsala Universitet, S-75121, Uppsala, Sweden

    J. Källne

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  1. G. Gorini
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  2. J. Källne
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Gorini, G., Källne, J. Neutron spectrometry in compact ignition experiments. Il Nuovo Cimento D 14, 1115–1143 (1992). https://doi.org/10.1007/BF02456764

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