Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apre16008m&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
The next frontier in magnetic fusion should investigate both burning plasma physics and advanced toroidal physics in plasmas with strong self-heating. The coupling of transport, MHD stability and plasma boundary physics with strong self-heating leads to a self-organized plasma state that presents a grand challenge for magnetic fusion science. FIRE, a national design study of a next step experiment is underway to develop and assess near term opportunities for addressing the issues identified above. The emphasis is on exploring and understanding the behavior of plasmas dominated by self-heating (Palpha/Pext ≈ 2) that are sustained for a duration comparable to characteristic plasma time scales (>= 10τ_E, ~ τ_SKIN . The study has focused on the technical evaluation of a compact, high-field, cryogenic-copper-magnet, highly-shaped tokamak with the parameters: Ro = 2.14m, a= 0.595m, double-null-divertor with helium pumping, Bt(Ro) = 10 T, and Ip = 7.7 MA and flat top time ≈ 20 s ( 20 τE and ≈ 1.5 τ_SKIN). The results of the study (http://fire.pppl.gov) including advanced tokamak modes and areas needing additional work will be discussed. Work supported by DOE Contract # DE-AC02-76CH0 3073.
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