Hartwig Z S, Whyte D G
Plasma Science and Fusion Center, Massachusetts Institute of Technology, 77 Massachusetts Ave., NW17-155, Cambridge, Massachusetts 02139, USA.
Rev Sci Instrum. 2010 Oct;81(10):10E106. doi: 10.1063/1.3478634.
The ideal in situ plasma facing component (PFC) diagnostic for magnetic fusion devices would perform surface element and isotope composition measurements on a shot-to-shot (∼10 min) time scale with ∼1 μm depth and ∼1 cm spatial resolution over large areas of PFCs. To this end, the experimental adaptation of the customary laboratory surface diagnostic--nuclear scattering of MeV ions--to the Alcator C-Mod tokamak is being guided by ACRONYM, a Geant4 synthetic diagnostic. The diagnostic technique and ACRONYM are described, and synthetic measurements of film thickness for boron-coated PFCs are presented.
