The fraction of core power generated by the blanket is between 40% and 50% without exceeding the radiation damage constraint of 200 Displacements per Atom (DPA); this fraction increases when the seed is designed to have a smaller CR.
The Seed-and-Blanket (S&B) Sodium-cooled Fast Reactor SFRR) core concept was proposed for generating a significant fraction of the core power from thorium fueled breed-and-burn (B&B) blankets without exceeding the presently verified radiation damage constraint of 200 Displacement per Atom (DPA).
Caliste is especially designed to match astronomical space mission requirements and its design takes into account environmental constraints, radiation environment in particular.
As revealed in [10] and [11], precoder G χ achieves OOB radiation without BER constraint, which could be applied to low cost or fast response scenario.
The paper discusses guidelines to optimize the radiation modes for various constraints.
The extreme, non-uniform radiation environment puts additional constraints on the sensor design.
The use of the VELO in the LHCb trigger together with its operation in a harsh radiation environment puts additional constraints on the design.
We did not prospectively carry out CT in a normal healthy population, nevertheless, we believe our strategy is a reasonable alternative given the ethical constraints with radiation exposure in this age group.
We could not scan the whole lung due to time constraints and radiation exposure, so we chose to limit CT images to a representative lung fraction, from the carina to the diaphragm.
