First measurements of energetic protons in Mega Amp Spherical Tokamak Upgrade (MAST-U)
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-08-01 |
| Journal | Review of Scientific Instruments |
| Authors | A. Aboutaleb, S. Allan, W. Boeglin, M. Cecconello, A. Jackson |
| Institutions | Uppsala University, United Kingdom Atomic Energy Authority |
| Citations | 2 |
Abstract
Section titled āAbstractāFirst proton production rates from the d(d,p)t reaction in the Mega Amp Spherical Tokamak Upgrade (MAST-U) are measured. The data were taken during the MAST-U experimental campaign with an upgraded version of the proton detector (PD) previously used in MAST. The new detector array consists of three collimated silicon surface barrier detectors with a depletion depth of 300 Ī¼m and a collimated 120 Ī¼m thick diamond detector, mounted on the MAST-U reciprocating probe arm. This array measures the energies of unconfined energetic 3 MeV protons and 1 MeV tritons mainly produced by beam-thermal DD reactions during neutral beam injection heating. Diamond detectors have the potential to be uniquely suited to detect charged fusion products as they promise to be much more radiation resistant and much less sensitive to temperature variations compared to silicon-based detectors. Using silicon and diamond-based detectors simultaneously allowed us to directly compare the performance of these two detector types. PD particle rates measured during different plasma scenarios are presented and compared to neutron rates measured using the neutron camera upgrade and TRANSP predictions.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2022 - Installation of a solid state neutral particle analyzer array on mega ampere spherical tokamak upgrade [Crossref]