PPT Slide
Pion target - induced activity, from A. Sullivan, based on measurements at the AA
Proton flux: 3 1015 protons cm-2 s-1 Si old units
After 1 month of use the specific activity
of a heavy metal fixed target (3 ?) would be: = ? 3 1013 Bq g-1
And the total activity: = ? 5 1015 Bq 1.3 105 Ci
For a liquid target the specific activity
would be greatly diluted.
The dose rate at I m from the fixed
target (1 day decay time) = ? 100 Sv h 104 rem h-1
If the target is water cooled then
the from a typical closed-circuit
heat exchanger the equilibrium
dose rate at 1 m would be = ? 1 to 3 Sv h-1 100 to 300 rem h-1
The total activity of volatile spallation
products (e.g. xenon, iodine) would be: = ? 1013 Bq 270 Ci
These would have to be captured in the
target enclosure air/vacuum system