The scattering angles of the pairs can be measured by two sets of double discs
of pixel device at 1 m from IP. The beam aspect ratio can be obtained
from the measurement of the azimuthal angles.
At SLAC, there is a doubt for this possibility because of the huge background
of synchrotron radiations etc. .
pairs
1 m from IP. The beam aspect ratio can be obtained
from the measurement of the azimuthal angles.
At SLAC, there is a doubt for this possibility because of the huge background
of synchrotron radiations etc. .