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4. The control and data acquisition software for the gamma-ray spectroscopy ATCA sub-systems of the JET-EP2 enhancements

Author

Neto, A, Sousa, J, Carvalho, B, Fernandes, H, Pereira, R, Fernandes, A, Varandas, C, Gorini, G, Tardocchi, M, Gin, D, Shevelev, A, Kneupner, K, NETO, A, SOUSA, J, CARVALHO, B, FERNANDES, H, PEREIRA, R, FERNANDES, A, VARANDAS, C, TARDOCCHI, M, GIN, D, SHEVELEV, A, KNEUPNER, K., GORINI, GIUSEPPE, Neto, A, Sousa, J, Carvalho, B, Fernandes, H, Pereira, R, Fernandes, A, Varandas, C, Gorini, G, Tardocchi, M, Gin, D, Shevelev, A, Kneupner, K, NETO, A, SOUSA, J, CARVALHO, B, FERNANDES, H, PEREIRA, R, FERNANDES, A, VARANDAS, C, TARDOCCHI, M, GIN, D, SHEVELEV, A, KNEUPNER, K., and GORINI, GIUSEPPE

Abstract

A local control and data acquisition (CDAQ) sub-system for gamma-ray spectroscopy diagnostics is being developed for the JET-EP2 enhancements. The Hardware implementation is based on the Advanced Telecommunications Computing ArchitectureTM (ATCATM) and will permit acquisition at a very high count rate (up to few MHz) with digital pulse processing (DPP) on a field programmable gate array (FPGA) performing pulse height analysis (PHA), pulse shape discrimination (PSD) and pile-up rejection (PUR) algorithms. This paper presents the CDAQ software implementation, which is based on the FireSignal platform developed by the Euratom/IST Association. The FireSignal is based on a client/server modular approach, where both the server and the hardware clients are defined by a generic XML description. Its event-driven operation is dynamic thereby permitting continuous control and data acquisition and 'plug-and-play' of clients/hardware. The FireSignal is being extended to interface the diagnostic sub-systems to the JET CODAS HTTP data/event transport layer and to integrate the diagnostics specific requirements including the hardware device drivers, real-time spectroscopy processing and local control operation. © 2007 Elsevier B.V. All rights reserved.

Published
2008

5. Spectral broadening of characteristic γ-ray emission peaks from 12C(3He,pγ)14N reactions in fusion plasmas

Author

Tardocchi, M, Proverbio, I, Kiptily, VG, Blanchard, P, Conroy, S, Grosso, G, Kneupner, K, Lerche, E, Murari, A, Perelli Cippo, E, Pietropaolo, A, Syme, B, Van Eester, D, NOCENTE, MASSIMO, FONTANESI, MARCELLO, GORINI, GIUSEPPE, Tardocchi, M, Nocente, M, Proverbio, I, Kiptily, V, Blanchard, P, Conroy, S, Fontanesi, M, Grosso, G, Kneupner, K, Lerche, E, Murari, A, Perelli Cippo, E, Pietropaolo, A, Syme, B, Van Eester, D, and Gorini, G

Subjects
FIS/01 - FISICA SPERIMENTALE, gamma ray emission, fusion plasmas
Abstract

The spectral broadening of characteristic γ-ray emission peaks from the reaction C12(He3,pγ)N14 was measured in D(He3) plasmas of the JET tokamak with ion cyclotron resonance heating tuned to the fundamental harmonic of He3. Intensities and detailed spectral shapes of γ-ray emission peaks were successfully reproduced using a physics model combining the kinetics of the reacting ions with a detailed description of the nuclear reaction differential cross sections for populating the L1-L8 N14 excitation levels yielding the observed γ-ray emission. The results provide a paradigm, which leverages knowledge from areas of physics outside traditional plasma physics, for the development of nuclear radiation based methods for understanding and controlling fusion burning plasmas. © 2011 American Physical Society.

Published
2011

7. High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET4He plasmas

Author

Nocente, M, Tardocchi, M, Kiptily, V, Blanchard, P, Chugunov, I, Conroy, S, Edlington, T, Fernandes, A, Ericsson, G, Johnson, M, Gin, D, Grosso, G, Hellesen, C, Kneupner, K, Lerche, E, Murari, A, Neto, A, Pereira, R, Cippo, E, Sharapov, S, Shevelev, A, Sousa, J, Syme, D, Eester, D, Gorini, G, NOCENTE, MASSIMO, GORINI, GIUSEPPE, Nocente, M, Tardocchi, M, Kiptily, V, Blanchard, P, Chugunov, I, Conroy, S, Edlington, T, Fernandes, A, Ericsson, G, Johnson, M, Gin, D, Grosso, G, Hellesen, C, Kneupner, K, Lerche, E, Murari, A, Neto, A, Pereira, R, Cippo, E, Sharapov, S, Shevelev, A, Sousa, J, Syme, D, Eester, D, Gorini, G, NOCENTE, MASSIMO, and GORINI, GIUSEPPE

Published
2012

8. High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET He-4 plasmas

Author

Nocente, M., Tardocchi, M., Kiptily, V. G., Blanchard, P., Chugunov, I., Conroy, Sean, Edlington, T., Fernandes, A. M., Ericsson, Göran, Gatu Johnson, Maria, Gin, D., Grosso, G., Hellesen, Carl, Kneupner, K., Lerche, E., Murari, A., Neto, A., Pereira, R. C., Cippo, E. Perelli, Sharapov, S., Shevelev, A., Sousa, J., Syme, D. B., Van Eester, D., Gorini, G., Nocente, M., Tardocchi, M., Kiptily, V. G., Blanchard, P., Chugunov, I., Conroy, Sean, Edlington, T., Fernandes, A. M., Ericsson, Göran, Gatu Johnson, Maria, Gin, D., Grosso, G., Hellesen, Carl, Kneupner, K., Lerche, E., Murari, A., Neto, A., Pereira, R. C., Cippo, E. Perelli, Sharapov, S., Shevelev, A., Sousa, J., Syme, D. B., Van Eester, D., and Gorini, G.

Abstract

High-resolution gamma-ray measurements were carried out on the Joint European Torus (JET) in an experiment aimed at accelerating He-4 ions in the MeV range by coupling third harmonic radio frequency heating to an injected He-4 beam. For the first time, Doppler broadening of gamma-ray peaks from the C-12(d, p gamma)C-13 and Be-9(alpha, n gamma)C-12 reactions was observed and interpreted with dedicated Monte Carlo codes based on the detailed nuclear physics of the processes. Information on the confined He-4 and deuteron energy distribution was inferred, and confined He-4 ions with energies as high as 6 MeV were assessed. A signature of MHD activity in gamma-ray traces was also detected. The reported results have a bearing on diagnostics for fast ions in the MeV range in next step fusion devices.

Published
2012
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Author

Tardocchi, M, Nocente, M, Proverbio, I, Kiptily, V, Blanchard, P, Conroy, S, Fontanesi, M, Grosso, G, Kneupner, K, Lerche, E, Murari, A, Perelli Cippo, E, Pietropaolo, A, Syme, B, Van Eester, D, Gorini, G, Kiptily, VG, NOCENTE, MASSIMO, FONTANESI, MARCELLO, GORINI, GIUSEPPE, Tardocchi, M, Nocente, M, Proverbio, I, Kiptily, V, Blanchard, P, Conroy, S, Fontanesi, M, Grosso, G, Kneupner, K, Lerche, E, Murari, A, Perelli Cippo, E, Pietropaolo, A, Syme, B, Van Eester, D, Gorini, G, Kiptily, VG, NOCENTE, MASSIMO, FONTANESI, MARCELLO, and GORINI, GIUSEPPE

Published
2011

10. Spectral Broadening of Characteristic gamma-Ray Emission Peaks from (12)C((3)He, p gamma)(14)N Reactions in Fusion Plasmas

Author

Tardocchi, M., Nocente, M., Proverbio, I., Kiptily, V. G., Blanchard, P., Conroy, Sean, Fontanesi, M., Grosso, G., Kneupner, K., Lerche, E., Murari, A., Cippo, E. Perelli, Pietropaolo, A., Syme, B., Van Eester, D., Gorini, G., Tardocchi, M., Nocente, M., Proverbio, I., Kiptily, V. G., Blanchard, P., Conroy, Sean, Fontanesi, M., Grosso, G., Kneupner, K., Lerche, E., Murari, A., Cippo, E. Perelli, Pietropaolo, A., Syme, B., Van Eester, D., and Gorini, G.

Abstract

The spectral broadening of characteristic gamma-ray emission peaks from the reaction (12)C((3)He, p gamma)(14)N was measured in D((3)He) plasmas of the JET tokamak with ion cyclotron resonance heating tuned to the fundamental harmonic of (3)He. Intensities and detailed spectral shapes of gamma-ray emission peaks were successfully reproduced using a physics model combining the kinetics of the reacting ions with a detailed description of the nuclear reaction differential cross sections for populating the L1-L8 (14)N excitation levels yielding the observed gamma-ray emission. The results provide a paradigm, which leverages knowledge from areas of physics outside traditional plasma physics, for the development of nuclear radiation based methods for understanding and controlling fusion burning plasmas.

Published
2011
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11. Doppler broadening of gamma ray lines and fast ion distribution in JET plasmas

Author

Kiptily, V, Gorini, G, Tardocchi, M, de Vries, P, Cecil, F, Chugunov, I, Craciunescu, T, Gatu Johnson, M, Gin, D, Goloborod’Ko, V, Hellesen, C, Johnson, T, Kneupner, K, Murari, A, Nocente, M, Perelli Cippo, E, Pietropaolo, A, Pinches, S, Proverbio, I, Sanchez, P, Sharapov, S, Shevelev, A, Syme, B, Yavorskij, V, Zoita, V, JET EFDA, C, Goloborod’ko, V, JET EFDA contributors, GORINI, GIUSEPPE, NOCENTE, MASSIMO, Kiptily, V, Gorini, G, Tardocchi, M, de Vries, P, Cecil, F, Chugunov, I, Craciunescu, T, Gatu Johnson, M, Gin, D, Goloborod’Ko, V, Hellesen, C, Johnson, T, Kneupner, K, Murari, A, Nocente, M, Perelli Cippo, E, Pietropaolo, A, Pinches, S, Proverbio, I, Sanchez, P, Sharapov, S, Shevelev, A, Syme, B, Yavorskij, V, Zoita, V, JET EFDA, C, Goloborod’ko, V, JET EFDA contributors, GORINI, GIUSEPPE, and NOCENTE, MASSIMO

Published
2010

12. Doppler broadening of gamma ray lines and fast ion distribution in JET plasmas

Author

Kiptily, V., Gorini, G., Tardocchi, M., de Vries, P. C., Cecil, E., Chugunov, N., Craciunescu, T., Gatu Johnson, Maria, Gin, D., Goloborod’ko, V., Hellesen, Carl, Johnson, T., Kneupner, K., Murari, A., Nocente, M., Perelli, E., Pietropaolo, A., Pinches, D., Proverbio, I., Sanchez, G., Sharapov, E., Shevelev, E., Syme, B., Yavorskij, V., Zoita, L., Kiptily, V., Gorini, G., Tardocchi, M., de Vries, P. C., Cecil, E., Chugunov, N., Craciunescu, T., Gatu Johnson, Maria, Gin, D., Goloborod’ko, V., Hellesen, Carl, Johnson, T., Kneupner, K., Murari, A., Nocente, M., Perelli, E., Pietropaolo, A., Pinches, D., Proverbio, I., Sanchez, G., Sharapov, E., Shevelev, E., Syme, B., Yavorskij, V., and Zoita, L.

Abstract

The Doppler broadening of individual γ-ray lines was measured with a high purity germanium detector in JET plasma experiments. High-resolution γ-ray spectrometry of nuclear reactions between energetic D, 3 He and 4 He ions accelerated by ion cyclotron resonance heating and main plasma impurities such as carbon and beryllium has been used. The nuclear reactions giving rise to γ-rays have been identified and an effective temperature of the heated ions has been obtained in JET discharges. This technique could be used for fast ion and fusion alpha-particle studies in ITER.

Published
2010
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13. High resolution gamma-ray spectroscopy observations in JET 4He plasmas with ICRH

Author

Tardocchi, M, Kiptily, V, Nocente, M, Proverbio, I, Chugunov, I, Costa Pereira, R, Edlington, T, Fernandes, A, Ericsson, G, Gatu Johnson, M, Gin, D, Grosso, G, Hellesen, C, Kneupner, K, Murari, A, Neto, A, Perelli Cippo, E, Pietropaolo, A, Sharapov, S, Shevelev, A, Sousa, J, Syme, B, Gorini, G, TARDOCCHI, MARCO, NOCENTE, MASSIMO, GORINI, GIUSEPPE, Tardocchi, M, Kiptily, V, Nocente, M, Proverbio, I, Chugunov, I, Costa Pereira, R, Edlington, T, Fernandes, A, Ericsson, G, Gatu Johnson, M, Gin, D, Grosso, G, Hellesen, C, Kneupner, K, Murari, A, Neto, A, Perelli Cippo, E, Pietropaolo, A, Sharapov, S, Shevelev, A, Sousa, J, Syme, B, Gorini, G, TARDOCCHI, MARCO, NOCENTE, MASSIMO, and GORINI, GIUSEPPE

Published
2010

14. High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET 4He plasmas

Author

Nocente, M., primary, Tardocchi, M., additional, Kiptily, V.G., additional, Blanchard, P., additional, Chugunov, I., additional, Conroy, S., additional, Edlington, T., additional, Fernandes, A.M., additional, Ericsson, G., additional, Johnson, M. Gatu, additional, Gin, D., additional, Grosso, G., additional, Hellesen, C., additional, Kneupner, K., additional, Lerche, E., additional, Murari, A., additional, Neto, A., additional, Pereira, R.C., additional, Cippo, E. Perelli, additional, Sharapov, S., additional, Shevelev, A., additional, Sousa, J., additional, Syme, D.B., additional, Eester, D. Van, additional, and Gorini, G., additional

Published
2012
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15. Spectral Broadening of Characteristicγ-Ray Emission Peaks fromC12(He3,pγ)N14Reactions in Fusion Plasmas

Author

Tardocchi, M., primary, Nocente, M., additional, Proverbio, I., additional, Kiptily, V. G., additional, Blanchard, P., additional, Conroy, S., additional, Fontanesi, M., additional, Grosso, G., additional, Kneupner, K., additional, Lerche, E., additional, Murari, A., additional, Perelli Cippo, E., additional, Pietropaolo, A., additional, Syme, B., additional, Van Eester, D., additional, and Gorini, G., additional

Published
2011
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16. High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET 4He plasmas.

Author

Nocente, M., Tardocchi, M., Kiptily, V. G., Blanchard, P., Chugunov, I., Conroy, S., Edlington, T., Fernandes, A. M., Ericsson, G., Johnson, M. Gatu, Gin, D., Grosso, G., Hellesen, C., Kneupner, K., Lerche, E., Murari, A., Neto, A., Pereira, R. C., Cippo, E. Perelli, and Sharapov, S.

Subjects
GAMMA ray spectrometry, ION energy, SPECTRAL energy distribution, NUCLEAR reactions, ION accelerators
Abstract

High-resolution &ggr;-ray measurements were carried out on the Joint European Torus (JET) in an experiment aimed at accelerating 4He ions in the MeV range by coupling third harmonic radio frequency heating to an injected 4He beam. For the first time, Doppler broadening of &ggr;-ray peaks from the 12C(d, p&ggr; )13C and 9Be(&agr;, n&ggr; )12C reactions was observed and interpreted with dedicated Monte Carlo codes based on the detailed nuclear physics of the processes. Information on the confined 4He and deuteron energy distribution was inferred, and confined 4He ions with energies as high as 6MeV were assessed. A signature of MHD activity in &ggr;-ray traces was also detected. The reported results have a bearing on diagnostics for fast ions in the MeV range in next step fusion devices. [ABSTRACT FROM AUTHOR]

Published
2012

17. High resolution gamma-ray spectroscopy observations in JET 4He plasmas with ICRH

Author

Tardocchi, M., Kiptily, V. G., Nocente, M., Proverbio, I., Chugunov, I., Costa Pereira, R., Edlington, T., Femandes, A. M., Ericsson, G., Gatu Johnson, M., Gin, D., Grosso, G., Hellesen, C., Kneupner, K., Murari, A., Neto, A., Perelli Cippo, E., Pietropaolo, A., Sharapov, S., Alexander Shevelev, Sousa, J., Syme, B., Gorini, G., Tardocchi, M, Kiptily, V, Nocente, M, Proverbio, I, Chugunov, I, Costa Pereira, R, Edlington, T, Fernandes, A, Ericsson, G, Gatu Johnson, M, Gin, D, Grosso, G, Hellesen, C, Kneupner, K, Murari, A, Neto, A, Perelli Cippo, E, Pietropaolo, A, Sharapov, S, Shevelev, A, Sousa, J, Syme, B, and Gorini, G

Subjects
gamma-ray spectroscopy, high resolution, 4He plasmas

18. Spectral Broadening of Characteristic γ-Ray Emission Peaks from 12C(³He, pγ)14N Reactions in Fusion Plasmas.

Author

Tardocchi, M., Nocente, M., Proverbio, I., Kiptily, V. G., Blanchard, P., Conroy, S., Fontanesi, M., Grosso, G., Kneupner, K., Lerche, E., Murari, A., Cippo, E. Perelli, Pietropaolo, A., Syme, B., Van Eester, D., and Gorini, G.

Subjects
*SPECTRUM analysis, *CYCLOTRONS, *PLASMA gases, *HARMONIC functions, *MATHEMATICAL models
Abstract

The spectral broadening of characteristic γ-ray emission peaks from the reaction 12C(³He, pγ)14N was measured in D(³He) plasmas of the JET tokamak with ion cyclotron resonance heating tuned to the fundamental harmonic of ³He. Intensities and detailed spectral shapes of γ-ray emission peaks were successfully reproduced using a physics model combining the kinetics of the reacting ions with a detailed description of the nuclear reaction differential cross sections for populating the L1-L8 14N excitation levels yielding the observed γ-ray emission. The results provide a paradigm, which leverages knowledge from areas of physics outside traditional plasma physics, for the development of nuclear radiation based methods for understanding and controlling fusion burning plasmas. [ABSTRACT FROM AUTHOR]

Published
2011
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19. High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET 4He plasmas

Author

A. E. Shevelev, V. G. Kiptily, R. C. Pereira, M. Nocente, Jet-Efda Contributors, João M. C. Sousa, I. N. Chugunov, D. B. Syme, Giovanni Grosso, Sean Conroy, Giuseppe Gorini, Andre Neto, S. E. Sharapov, K. Kneupner, P. Blanchard, E. Perelli Cippo, D. B. Gin, E. Lerche, T. Edlington, M. Tardocchi, A. Murari, Göran Ericsson, Ana Fernandes, M. Gatu Johnson, D. Van Eester, Carl Hellesen, Nocente, M, Tardocchi, M, Kiptily, V, Blanchard, P, Chugunov, I, Conroy, S, Edlington, T, Fernandes, A, Ericsson, G, Johnson, M, Gin, D, Grosso, G, Hellesen, C, Kneupner, K, Lerche, E, Murari, A, Neto, A, Pereira, R, Cippo, E, Sharapov, S, Shevelev, A, Sousa, J, Syme, D, Eester, D, and Gorini, G

Subjects
Physics, Nuclear and High Energy Physics, Jet (fluid), Range (particle radiation), NEUTRON EMISSION, Astrophysics::High Energy Astrophysical Phenomena, 52.50.Qt Plasma heating by radio-frequency field, Joint European Torus, Plasma, Condensed Matter Physics, OF-FLIGHT SPECTROMETER, Ion, FUSION PLASMAS, Nuclear physics, LIGHT-NUCLEI, FIS/01 - FISICA SPERIMENTALE, Deuterium, ICR, ICP, helicon, Gamma spectroscopy, ALPHA-PARTICLE DIAGNOSTICS, 52.65.Pp Monte Carlo method, Atomic physics, 52.70.La X-ray and gamma-ray measurement, 52.55.Pi Fusion products effects (e.g., alpha-particles, etc.), fast particle effects, Doppler broadening
Abstract

High-resolution γ-ray measurements were carried out on the Joint European Torus (JET) in an experiment aimed at accelerating 4He ions in the MeV range by coupling third harmonic radio frequency heating to an injected 4He beam. For the first time, Doppler broadening of γ-ray peaks from the 12C(d, pγ)13C and 9Be(α, nγ)12C reactions was observed and interpreted with dedicated Monte Carlo codes based on the detailed nuclear physics of the processes. Information on the confined 4He and deuteron energy distribution was inferred, and confined 4He ions with energies as high as 6 MeV were assessed. A signature of MHD activity in γ-ray traces was also detected. The reported results have a bearing on diagnostics for fast ions in the MeV range in next step fusion devices.

Published
2012
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20. Doppler broadening of gamma ray lines and fast ion distribution in JET plasmas

Author

S. E. Sharapov, K. Kneupner, M. Gatu Johnson, Massimo Nocente, I.N. Chugunov, F. E. Cecil, Thomas Johnson, Teddy Craciunescu, Vasile Zoita, A. E. Shevelev, P.G. Sanchez, A. Pietropaolo, P. de Vries, E. Perelli, Andrea Murari, Vasily Kiptily, Giuseppe Gorini, Jet-Efda Contributors, Carl Hellesen, V.A. Yavorskij, V. Goloborod'ko, M. Tardocchi, S. D. Pinches, D. Gin, I. Proverbio, D. B. Syme, Kiptily, V, Gorini, G, Tardocchi, M, de Vries, P, Cecil, F, Chugunov, I, Craciunescu, T, Gatu Johnson, M, Gin, D, Goloborod’Ko, V, Hellesen, C, Johnson, T, Kneupner, K, Murari, A, Nocente, M, Perelli Cippo, E, Pietropaolo, A, Pinches, S, Proverbio, I, Sanchez, P, Sharapov, S, Shevelev, A, Syme, B, Yavorskij, V, Zoita, V, and JET EFDA, C

Subjects
Nuclear reaction, Nuclear and High Energy Physics, Jet (fluid), Materials science, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, chemistry.chemical_element, Plasma, equipment and supplies, Condensed Matter Physics, Ion, FIS/01 - FISICA SPERIMENTALE, ___, chemistry, gamma ray, JET, Physics::Plasma Physics, High Energy Physics::Experiment, Beryllium, Atomic physics, Nuclear Experiment, Ion cyclotron resonance, Doppler broadening
Abstract

The Doppler broadening of individual γ-ray lines was measured with a high purity germanium detector in JET plasma experiments. High-resolution γ-ray spectrometry of nuclear reactions between energetic D, 3He and 4He ions accelerated by ion cyclotron resonance heating and main plasma impurities such as carbon and beryllium has been used. The nuclear reactions giving rise to γ-rays have been identified and an effective temperature of the heated ions has been obtained in JET discharges. This technique could be used for fast ion and fusion alpha-particle studies in ITER.

Published
2010
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