Tandem mirror thermal barrier experimental program plan Page: 4 of 28
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
mriODUCTION AND summary
Incorporating thermal barriers into tandem mirror reactor
designs improves projected performance and reduces magnet and neutral
beam technology, as shown by Table 1. Thermal barriers can be incorporated
into tandem mirror designs in numerous ways, as illustrated in Fig. 1.
Tht thermal barrier region thermally isolates the electrostatic end
plugs from the reacting adenoid. With such a thermal barrier, electrons
in the end plugs can be heated to temperatures above those in the solenoid.
The potential well, confining central cell ions, is then increased and
center cell ion confinement is increased.
The basic principles involved with the thermal barrier concept can be
calculated on the basis of theoretical models. ’ While many features of
the barrier concept have been experimentally studied in other contexts,
they have not been tested in a compound experimental configuration nor at
thermonuclear temperatures. A report describing technical considerations
for such tandem mirror experiments was written by Drake. ThiB report
presents an experimental plan for the development of the tandem mirror
thermal barrier. The plan presented herein proceeds in parallel with the
construction ' MFTF-B, in which we propose to incorporate thermal barriers.
A summary of the experimental plan to develop the thermal barrier
concept is outlined in Fig. 2. Physics issues can be investigated during
these periods on several University facilities. Also in the near term,
present UK and Phaderous tandem mirrox experiments can investigate, to a
limited extent, certain issues such as barrier filling rates, thermal
insulation, ECRH, and E-beam heating.
A thermal barrier IMX upgrade will allow barrier physics experiments
end a test of a complete thermal barrier system to gain experience before
operation of MFTF-2.
Further improvement in center cell plasma confinement properties can
be gained by using axisymaetric magnetic coils. These experiments will
require replacing the TMX magnet system in 1383.
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Coensgen, F.H.; Drake, R.P. & Simonen, T.C. Tandem mirror thermal barrier experimental program plan, report, January 2, 1980; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc1093594/m1/4/: accessed March 18, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.