Author: A. NiemczewskiPublisher:
ISBN:
Category :
Languages : en
Pages : 21
Book Description
Neutral Gas Compression in the Alcator C-Mod Divertor
Author: A. NiemczewskiScientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652
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.
In-situ Conductance and Flow Measurements Through Alcator C-Mod Divertor Structures with and Without Plasma Present
Author: Brian LaBombardPublisher:
ISBN:
Category :
Languages : en
Pages : 80
Book Description
A specialized arrangement of gas-puff capillaries and in-situ pressure gauges has been installed in Alcator C-Mod to allow gas conductances and flows around divertor structures to be measured with or without plasma present in the chamber. Results are presented from a series of dedicated experiments performed during the 1020725 run day (MP#313, "Instrumented Divertor Leakage Experiments"). Gas conductances and flows are compiled in this report with the aim of providing good benchmark points for numerical simulations of gas flow and "plasma plugging" physics in Alcator C-Mod. A strong plasma plugging effect is found at locations where the divertor structure is opened for diagnostics access (the so-called "open-port" locations), as evidenced by a factor of [approx.] 4 reduction in the local gas conductance with plasma present. The effect is most dramatic for locations in the upper chamber region where there is no neutral baffle structure; a factor of [approx.] 5 reduction in the local gas conductance is found there. Gas conductance through an open divertor flap is measured to be a factor of [approx.] 3 lower than that which has been commonly assumed using the area of the open flap. The conductance through the flap is found to be similar with or without plasma present, indicating that there is no "plasma plugging" effect occurring at this location. The gas flow rate through a flap that is adjacent to an "open-port" location is found to be a factor of 2 lower than at a location distant from open ports. The latter result suggests that significant toroidal variations in the pressures exist under the lower divertor modules.
Nuclear Fusion
Author: The Effects of Field Reversal on the Alcator C-Mod Divertor
Author: Ian H. HutchinsonEnergy Research Abstracts
Author: Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 802
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.
Systems Approaches to Nuclear Fusion Reactors
Author: Frederick B. MarcusPublisher: Springer Nature
ISBN: 3031177118
Category : Science
Languages : en
Pages : 484
Book Description
This book offers an overall review, applying systems engineering and architecture approaches, of the design, optimization, operation and results of leading fusion experiments. These approaches provide a unified means of evaluating reactor design. Methodologies are developed for more coherent construction or evaluation of fusion devices, associated experiments and operating procedures. The main focus is on tokamaks, with almost all machines and their important results being integrated into a systems design space. Case studies focus on DIII-D, TCV, JET, WEST, the fusion reactor prototype ITER and the EU DEMO concept. Stellarator, Mirror and Laser inertial confinement experiments are similarly analysed, including reactor implications of breakeven at NIF. The book examines the engineering and physics design and optimization process for each machine, analysing their performance and major results achieved, thus establishing a basis for the improvement of future machines. The reader will gain a broad historical and up-to-date perspective of the status of nuclear fusion research from both an engineering and physics point of view. Explanations are given of the computational tools needed to design and operate successful experiments and reactor-relevant machines. This book is aimed at both graduate students and practitioners of nuclear fusion science and engineering, as well as those specializing in other fields demanding large and integrated experimental equipment. Systems engineers will obtain valuable insights into fusion applications. References are given to associated complex mathematical derivations, which are beyond the scope of this book. The general reader interested in nuclear fusion will find here an accessible summary of the current state of nuclear fusion.
Measurements of Neutral Density Based on H[alpha] Emissivity in the Alcator C-Mod Divertor
![Measurements of Neutral Density Based on H[alpha] Emissivity in the Alcator C-Mod Divertor PDF](https://books.google.com/books/content/images/frontcover/pUVTHAAACAAJ?fife=w80-h100)
Author: Christian KurzThe Alcator C-Mod Divertor Bypass
Author: Charles Spencer PitcherPublisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
Author: James L. Terry