Production of Slow Positrons

W. J. Kossler

S. S. Long

JPos09

2.5mm cube

1cm spacing

1 x 4 x 1 mm

Angle in the y-z plane

Angle in the y-z plane

Moderator is target

Moderator is target

Conclusions Jlab is an ideal test bed for slow e+

production ideas. At 140 MeV and 1 mA, if the estimate is

correct, the yield of 0.9x1011 slow e+/s is higher than anything else in the world.