Impurity Injection Experiments on the Alcator C Tokamak 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 Impurity Injection Experiments on the Alcator C Tokamak PDF full book. Access full book title Impurity Injection Experiments on the Alcator C Tokamak by Earl S. Marmar. Download full books in PDF and EPUB format.
Author: Earl S. Marmar
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Get Book Here
Book Description
Author: Earl S. Marmar
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
Get Book Here
Book Description
Author: Michael Anthony Graf
Publisher:
ISBN:
Category :
Languages : en
Pages : 190
Get Book Here
Book Description
Author: Earl S. Marmar
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
Get Book Here
Book Description
Author: G. M. McCracken
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Get Book Here
Book Description
Author: Sanjay Gangadhara
Publisher:
ISBN:
Category :
Languages : en
Pages : 86
Get Book Here
Book Description
The physics of impurity transport in response to a local gas injection in the scrape-off-layer (SOL) of Alcator C-Mod is investigated. Carbon "plumes'' are formed at variable locations in the SOL -- up to the separatrix -- by puffing deuterated ethylene gas (C2D4) through the end of a reciprocating fast-scanning probe. CCD cameras are used to simultaneously record C+1 and C+2 emission patterns from two near-perpendicular views. The plume dispersal patterns are found to yield direct qualitative information about plasma flow, including the direction of VExB near the separatrix. Impurity transport and plasma-surface interaction physics implicit in the 3-D plume structure is explored in detail using a Monte Carlo impurity transport code, with the aim of extracting background plasma-flow quantities. A number of important local effects involving plasma-probe interaction have been identified: a vertical ExB drift near the probe surface, a parallel electric field above the probe tip arising from plasma recycling off the probe surface, and sputtering of a carbon layer that dynamically forms on the probe surface. The emission patterns are also found to yield important information on flows in the SOL: radial electric field (Er) in the near SOL and volume-averaged values of the parallel Mach number in the far SOL. Er values obtained from plume data compare favorably with estimates of Er based on the poloidal propagation velocity of edge plasma fluctuations measured by the scanning probe. Comparisons between parallel Mach numbers obtained from the plume data and probe measurements indicate that the probe over-estimates the parallel flow towards the divertor in the far SOL. This result supports the picture of particle balance in the SOL of Alcator C-Mod being dominated by main-chamber recycling, with weak plasma flow into the divertor.
Author: Herbert Leslie Manning
Publisher:
ISBN:
Category : Tokamaks
Languages : en
Pages : 440
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Controlled fusion
Languages : en
Pages : 100
Get Book Here
Book Description
Author: R. D. Petrasso
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Get Book Here
Book Description
Author: Juan Carlos Moreno
Publisher:
ISBN:
Category :
Languages : en
Pages : 137
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 1144
Get Book Here
Book Description
