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Author : S. J. Zweben
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (713 download)
Download or read book Measurements of DT Alpha Particle Loss Near the Outer Midplane of TFTR. written by S. J. Zweben and published by . This book was released on 1995 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. J. Zweben
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (713 download)
Download or read book Measurements of DT Alpha Particle Loss Near the Outer Midplane of TFTR. written by S. J. Zweben and published by . This book was released on 1995 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alpha Particle Loss in the TFTR DT Experiments written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Alpha particle loss was measured during the TFTR DT experiments using a scintillator detector located at the vessel bottom in the ion grad-B drift direction. The DT alpha particle loss to this detector was consistent with the calculated first-orbit loss over the whole range of plasma current I=0.6-2.7 MA. In particular, the alpha particle loss rate per DT neutron did not increase significantly with fusion power up to 10.7 MW, indicating the absence of any new ''collective'' alpha particle loss processes in these experiments.
Author : A. C. England
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (81 download)
Download or read book A Technique for Measuring the Losses of Alpha Particles to the Wall in TFTR written by A. C. England and published by . This book was released on 1984 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. V. Budny
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (713 download)
Download or read book Alpha Particle Loss in the TFTR DT Experiments written by R. V. Budny and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (683 download)
Download or read book Measurements of Escaping Alphas in the TFTR DT Experiments written by and published by . This book was released on 1995 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alpha particle loss to the wall of TFTR has been measured during the initial TFTR DT run period. These measurements were made with the same lost alpha scintillator detector system used previously for DD fusion products, except for a switch of the scintillator material from zinc sulfide (P31) to yttrium aluminate (P46) to insure a linear response up to the maximum alpha flux expected in DT. The alpha loss signals in DT are (almost equal to) 100 times larger than the DD fusion product loss signals, as expected from the neutron rates and the relative sensitivity to DT vs. DD fusion products.
Download or read book Диалектика, теория познания written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sawtooth Mixing of Alpha Particles in TFTR D-T Plasmas written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Radially resolved confined alpha particle energy and density distributions are routinely measured on TFTR using two diagnostics: PCX and[alpha]-CHERS. The Pellet Charge-eXchange (PCX) diagnostic uses the ablation cloud formed by an impurity pellet (Li or B) for neutralization of the alphas followed by analysis of the escaping helium neutrals. PCX detects deeply trapped alpha particles in the energy range 0.5 - 3.8 MeV. The[alpha]-CHERS technique, were the alpha signal is excited by charge-exchange between alphas and the deuterium atoms of one of the heating beams and appears as a wing on the He[sup+] 468.6 nm line, detects mainly passing alphas in the range of 0.15 - 0.7 MeV. Studies of alpha losses during DT experiments on TFTR have also been conducted using lost alpha detectors located on the walls of the plasma chamber. All of these diagnostics were used for investigating the influence of sawtooth crashes on alphas in high power D-T discharges in TFTR. Both PCX and[alpha]-CHERS measurements show a strong depletion of the alpha core density and transport of trapped alphas radially outwards well beyond q= 1 surface after a sawtooth crash. Lost alpha detectors measure bursts of alpha loss of the previously confined alphas (
Download or read book Technique for Measuring the Losses of Alpha Particles to the Wall in TFTR. written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is proposed to measure the losses of alpha particles to the wall in the Tokamak Fusion Test Reactor (TFTR) or any large deuterium-tritium (D-T) burning tokamak by a nuclear technique. For this purpose, a chamber containing a suitable fluid would be mounted near the wall of the tokamak. Alpha particles would enter the chamber through a thin window and cause nuclear reactions in the fluid. The material would then be transported through a tube to a remote, low-background location for measurement of the activity. The most favorable reaction suggested here is /sup 10/B(.cap alpha., n)/sup 13/N, although /sup 14/N(.cap alpha., .gamma.)/sup 18/F and others may be possible. The system, the sensitivity, the probe design, and the sources of error are described.
Author : George R. McKee
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (89 download)
Download or read book Confined Nonthermal Alpha Distribution and Transport Measurements in D-T Plasmas on TFTR written by George R. McKee and published by . This book was released on 1995 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : TFTR Team
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (713 download)
Download or read book TF Ripple Loss of Alpha Particles in TFTR DT Experiments written by TFTR Team and published by . This book was released on 1995 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (683 download)
Download or read book Alpha Particle Loss in TFTR Deuterium-tritium Plasmas with Reversed Magnetic Shear written by and published by . This book was released on 1997 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The confinement and loss of fusion alpha particles are examined for reversed magnetic shear plasmas in TFTR. Such plasmas, with high central q and non-monotonic q profiles can exhibit remarkably reduced energy and particle transport of the thermal ions. However, these same conditions are theoretically predicted to produce high levels of stochastic ripple loss of suprathermal particles, which may reduce the efficiency of plasma heating by the alpha particles and other heating schemes involving fast ions. This paper presents calculations of guiding-center code alpha particle orbit loss from deuterium-tritium (DT) simulations of TFTR deuterium-only experiments. They are compared to results of measurements made in DT reversed shear plasmas of both the confined alpha particle distribution and the alpha particles lost from the plasma. Large fast particle losses have also been found in reversed shear ITER simulations (up to 20%) and from measurements of triton burnup in reversed shear experiments on JT-60U (12%).
Author : M. H. Redi
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (713 download)
Download or read book Alpha Particle Loss in TFTR Deuterium-tritium Plasmas Wit Reversed Magnetic Shear written by M. H. Redi and published by . This book was released on 1997 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zuoyang Chang
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (713 download)
Download or read book First Observation of Alpha Particle Loss Induced by Kinetic Ballooning Modes in TFTR DT Experiments written by Zuoyang Chang and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. H. Redi
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (713 download)
Download or read book Modelling TF Ripple Loss of Alpha Particles in TFTR DT Experiments written by M. H. Redi and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark Christopher Herrmann
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (713 download)
Download or read book Alpha Particle Losses from Tokamak Fusion Test Reactor Deuterium-tritium Plasmas written by Mark Christopher Herrmann and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : TFTR Team
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (713 download)
Download or read book TF Ripple Loss of Alpha Particles in TFTR DT Experiments written by TFTR Team and published by . This book was released on 1995 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
