Intrabeam Scattering Studies at CesrTA

TL;DR

This paper reports measurements of intrabeam scattering at CesrTA, comparing experimental data with theory, and finds good agreement when applying a tail-cut procedure, relevant for next-generation low-emittance storage rings.

Contribution

It provides experimental validation of IBS theory in lepton machines with strong damping, using measurements at CesrTA with parameters similar to future storage rings.

Findings

Measurements agree with IBS theory when using tail-cut

Data supports IBS models for low-emittance, high-current beams

Results are relevant for designing next-generation storage rings

Abstract

Intrabeam scattering (IBS) limits the emittance and single-bunch current that can be achieved in electron or positron storage ring colliders, damping rings, and light sources. Much theoretical work on IBS exists, and while the theories have been validated in hadron and ion machines, the presence of strong damping makes IBS in lepton machines a different phenomenon. We present the results of measurements at CesrTA of IBS dominated beams, and compare the data with theory. The beams we study have parameters typical of those specified for the next generation of wiggler dominated storage rings: low emittance, small bunch length, and few GeV energy. Our measurements are in good agreement with IBS theory, provided a tail-cut procedure is applied.