Why a D-D reaction in the Divertor Tokamak Test Facility?

AI Thread Summary
The DTT project proposal focuses on a D-D reaction for the future tokamak in Frascati, Italy, due to its smaller cross section and less energetic neutrons compared to the D-T reaction. This choice impacts heat and particle exhaust on the divertor, as the divertor primarily experiences ion impacts from the plasma, with neutrons playing a minor role. The heat flux on the divertor is expected to change due to these factors, influencing its design and operation. Tritium presents operational challenges, making deuterium a more manageable option for the facility. Overall, the DTT will not engage in significant fusion activities.
Giuliavaleria
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The DTT project proposal talks about a D-D reaction inside the future tokamak that is going to be built in Italy, Frascati. Which is the reason of this choise? The cross section is smaller than the D-T reaction one, and neutrons are less energetic. How this influences heat and particle exhaust on the divertor? and how does the heat flux changes?
Thanks
 
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It is a divertor test facility. The divertor is mainly hit by ions from the plasma. While it is also hit by some neutrons that plays a smaller role. The DTT won't have any relevant fusion as far as I understand.

Tritium is more difficult to work with, unless there is a strong reason to do so operation with deuterium is easier.
 

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