Alfv'en Cascade modes in NSTX: fast-ion transport and MHD spectroscopy

Details Alfv'en Cascade modes in NSTX: fast-ion transport and MHD spectroscopy Alfv'en Cascade modes in NSTX: fast-ion transport and MHD spectroscopy

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aps..dppnp6096c&link_type=abstract

American Physical Society, 50th Annual Meeting of the Division of Plasma Physics, November 17-21, 2008, abstract #NP6.096

Physics

Plasma Physics

Scientific paper

Alfv'en Cascades (AC) occur in reverse shear plasmas and can transport fast-ions (e.g. fusion α's, beam ions or RF-accelerated ions), impacting plasma performance. This transport is studied with neutral particle analyzers, a scintillator fast lost ion probe and a fast-ion D alpha (FIDA) spectrometer. AC structure measurements via reflectometery and interferometery, in conjunction with structure calculations by the NOVA-K eigenmode code and orbit calculations by the ORBIT code, are employed to study how ACs transport fast-ions. ACs also enable MHD spectroscopy, the determination of qmin from AC frequency. In spherical tori, this requires understanding the influence of acoustic coupling and pressure gradients on AC frequency, which is studied by changing species (He and D) and density (0.5 -- 1.5 x 10^19 m-3), and modifying Te with high harmonic fast wave heating. Comparisons are made with NOVA-K.

Affiliated with

Also associated with

No associations

Rating

Alfv'en Cascade modes in NSTX: fast-ion transport and MHD spectroscopy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Alfv'en Cascade modes in NSTX: fast-ion transport and MHD spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alfv'en Cascade modes in NSTX: fast-ion transport and MHD spectroscopy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1842603