Observations and Open Questions in Beam-Beam Interaction
A review article on the physics of beam-beam interactions in circular colliders.
physics.acc-ph↗
arXiv subjects
Tanaji Sen
Publications and source records attributed to Tanaji Sen.
Optical Diffraction Radiation from a beam off a circular target
We calculate the optical diffraction radiation generated by a bunch of high energy particles as they pass through a round hole within an annular metallic ring. We derive expressions for the differential angular spectrum in the far-field and the intensities of the horizontal and vertical polarizations. The sensitivity of the spectrum to changes in beam size and position is shown. The total photon yield from the bunch is calculated and used to set limits on the detectable wavelengths.
physics.acc-ph↗
Diffusion due to the Beam-Beam Interaction and Fluctuating Fields in Hadron Colliders
Random fluctuations in the tune, beam offsets and beam size in the presence of the beam-beam interaction are shown to lead to significant particle diffusion and emittance growth in hadron colliders. We find that far from resonances high frequency noise causes the most diffusion while near resonances low frequency noise is responsible for the large emittance growth observed. Comparison of different fluctuations shows that offset fluctuations between the beams causes the largest diffusion for particles in the beam core.
acc-phys↗