Speaker
Description
The Charged Fusion Product Detector (CFPD) is a fast-ion diagnostic employing solid-state detectors to measure energies and production rates of charged fusion products [in particular p (3.02 MeV) and t (1.01 MeV) from D-D fusion] primarily from fast-ion induced reactions. Results obtained during the recent MU04 and MU05 (2024-26) MAST-U campaigns will be presented. The current diagnostic is an advancement from a previous version [1]: with improved signal-to-noise ratio reducing the spectroscopic energy-peak width and allowing lower energy products to be measured.
Radial distributions of fusion-product emissivities measured using a 6-channel, all diamond-detector set-up will be shown. Also, fast-ion populations have been studied using silicon-detectors via spectroscopy of the charged fusion product energy peaks, exploiting line-of-sight motions of reacting fast-ions that affect the energy distribution of the products. Results will be compared with TRANSP/FIDASIM predictions [2,3].
[1] A. Aboutaleb et al. Rev. Sci. Instrum. 95, 083522 (2024)
[2] B. Geiger et al. PPCF 62, 105008 (2020)
[3] W. W. Heidbrink et al. PPCF 63, 055008 (2021)