A Numerical Study of Density Limit Mechanisms in Tokamaks PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download A Numerical Study of Density Limit Mechanisms in Tokamaks PDF full book. Access full book title A Numerical Study of Density Limit Mechanisms in Tokamaks by Weston Monroe Stacey. Download full books in PDF and EPUB format.
Author: Weston Monroe Stacey
Publisher:
ISBN:
Category : Controlled fusion
Languages : en
Pages : 33
Get Book Here
Book Description
Author: Weston Monroe Stacey
Publisher:
ISBN:
Category : Controlled fusion
Languages : en
Pages : 33
Get Book Here
Book Description
Author: K. Shimizu
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Controlled fusion
Languages : en
Pages : 160
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 700
Get Book Here
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
DIII-D plasmas at very low density exhibit onset of n=1 error field (EF) penetration (the `low-density locked mode') not at a critical density or EF, but instead at a critical level of runaway electron (RE) intensity. Raising the density during a discharge does not avoid EF penetration, so long as RE growth proceeds to the critical level. Penetration is preceded by non-thermalization of the electron cyclotron emission, anisotropization of the total pressure, synchrotron emission shape changes, as well as decreases in the loop voltage and bulk thermal electron temperature. The same phenomena occur despite various types of optimal EF correction, and in some cases modes are born rotating. Similar phenomena are also found at the low-density limit in JET. These results stand in contrast to the conventional interpretation of the low-density stability limit as being due to residual EFs and demonstrate a new pathway to EF penetration instability due to REs. Existing scaling laws for penetration project to increasing EF sensitivity as bulk temperatures decrease, though other possible mechanisms include classical tearing instability, thermo-resistive instability, and pressure-anisotropy driven instability. Regardless of first-principles mechanism, known scaling laws for Ohmic energy confinement combined with theoretical RE production rates allow rough extrapolation of the RE criticality condition, and thus, the low-density limit to other tokamaks. Furthermore, the extrapolated low-density limit by this pathway decreases with increasing machine size and is considerably below expected operating conditions for ITER. While likely unimportant for ITER, this effect can explain the low-density limit of existing tokamaks operating with small residual EFs.
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 762
Get Book Here
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1114
Get Book Here
Book Description
Author: United States. Energy Research and Development Administration
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 1320
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 724
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1264
Get Book Here
Book Description
