Speaker
Description
Many EIC physics goals are based on precise measurements of absolute
cross sections, for this a determination of the integrated luminosity
is crucial. The design goal for the EIC is to have an uncertainty
in the luminosity measurement of about 1%.
In this talk a first study of the EIC luminosity monitoring system will be presented.
The design is based on detecting Bethe-Heitler bremsstrahlung photons,
emitted by the electron beam interacting with proton or nuclear beams.
The photons will be detected in a zero degree photon calorimeter
and in a pair spectrometer for electron-positron pairs generated in photon
conversions on an aluminum exit window in the photon beam.
The presentation will describe a dedicated event generator
for bremsstrahlung photons, and a GEANT-4 model of the luminosity system
and its performance characteristics will be shown.
