Heavy ion beam loss mechanisms at an electron-ion collider

Abstract

There are currently several proposals to build a high-luminosity electron-ion collider, to study the spin structure of matter and measure parton densities in heavy nuclei, and to search for gluon saturation and new phenomena like the colored glass condensate. These measurements require operation with heavy-nuclei. We calculate the cross-sections for two important processes that will affect accelerator and detector operations: bound-free pair production, and Coulomb excitation of the nuclei. Both of these reactions have large cross-sections, 28-56 mb, which can lead to beam ion losses, produce beams of particles with altered charge:mass ratio, and produce a large flux of neutrons in zero degree calorimeters. The loss of beam particles limits the sustainable electron-ion luminosity to levels of several times $10^{32}/$cm${}^2$/s.

4 pages with 1 figure

References in corpus (3)

• Beam losses from ultra-peripheral nuclear collisions between Pb ions in the Large Hadron Collider and their alleviation
• First observations of beam losses due to bound-free pair production in a heavy-ion collider
• Bound-free pair production cross section in heavy-ion colliders from the equivalent photon approach

Cited by in corpus (5)

• Imaging the nucleus with high-energy photons
• Precision Studies of QCD in the Low Energy Domain of the EIC
• Challenges to the Good-Walker paradigm in coherent and incoherent photoproduction
• Simultaneous Production of Lepton Pairs at Ultra-peripheral Relativistic Heavy Ion Collisions
• Bound-free pair production mechanism in Pb-p collisions at LHC