Molybdenum Sources and Transport in Alcator C-Mod PDF Download
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Author: B. Lipschultz
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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Author: B. Lipschultz
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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Author: Dominic Anthony Pappas
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Category :
Languages : en
Pages : 16
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Author: B. Lipschultz
Publisher:
ISBN:
Category :
Languages : en
Pages : 27
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We present a characterization of molybdenum sources, GMo, core Mo content, NMo, and their dependencies on Alcator C-Mod operational regimes. The primary impurity source locations are the divertor, the inner wall and the ICRF antenna limiters. Boronization is used to coat the first-wall surfaces with a thin layer of B which greatly reduces the Mo sources for a period of time, eroding away with an e-folding period of 15-50 discharges. The penetration of molybdenum into the core plasma under different conditions is analyzed using the concept of penetration factors, PF=NMo /GMo (seconds). In general the inner wall Mo source is large (%7E1018/sec) but is found to be relatively uncorrelated with the core Mo content in diverted plasmas. The outer divertor source is of similar order to that from the inner wall and has a penetration factor in the range 10-5 - 2x10-3 seconds depending on density and confinement mode. The antenna limiter Mo sources are typically smaller, but with higher penetration factors of 10-3 - 2x10-2 seconds. The behavior of the antenna limiter sources is consistent with physical sputtering due to the influence of RF sheath rectification. Measurements of the plasma potential on field lines connected to the antenna are very high when the antennas are energized, often reaching hundreds of volts.
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Category :
Languages : en
Pages : 28
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Author: Martin Greenwald
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Category :
Languages : en
Pages : 23
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Category : Electronic journals
Languages : en
Pages : 504
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Author: Martin Greenwald
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Category :
Languages : en
Pages : 26
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Author: George Neilson
Publisher: Woodhead Publishing
ISBN: 0081003269
Category : Science
Languages : en
Pages : 634
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Magnetic Fusion Energy: From Experiments to Power Plants is a timely exploration of the field, giving readers an understanding of the experiments that brought us to the threshold of the ITER era, as well as the physics and technology research needed to take us beyond ITER to commercial fusion power plants. With the start of ITER construction, the world's magnetic fusion energy (MFE) enterprise has begun a new era. The ITER scientific and technical (S&T) basis is the result of research on many fusion plasma physics experiments over a period of decades. Besides ITER, the scope of fusion research must be broadened to create the S&T basis for practical fusion power plants, systems that will continuously convert the energy released from a burning plasma to usable electricity, operating for years with only occasional interruptions for scheduled maintenance. - Provides researchers in academia and industry with an authoritative overview of the significant fusion energy experiments - Considers the pathway towards future development of magnetic fusion energy power plants - Contains experts contributions from editors and others who are well known in the field
Author: Gianfranco Federici
Publisher:
ISBN:
Category : Fusion reactors
Languages : en
Pages : 342
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Author: B. Lipschultz
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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