On measurement of the isotropy of the speed of light
  Three experimental concepts investigating possible anisotropy of the speed of light are presented. They are based on i) beam deflection in a 180 degree magnetic arc, ii) narrow resonance production in an electron-positron collider, and iii) the ratio of magnetic moments of an electron and a positron moving in opposite directions. 
B. Wojtsekhowski
physics.ins-det gr-qc physics.space-ph