Related Experiment Video
Updated: Jun 7, 2026
Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
Published on: August 25, 2016
Simulated plasma facing component measurements for an in situ surface diagnostic on Alcator C-Mod
1Plasma Science and Fusion Center, Massachusetts Institute of Technology, 77 Massachusetts Ave., NW17-155, Cambridge, Massachusetts 02139, USA. hartwig@mit.edu
Abstract:
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.
