High luminosity interaction region design for collisions with detector solenoid

TL;DR

This paper presents a new high luminosity interaction region design for collider experiments that incorporates a large detector with a solenoidal field, addressing the challenges of beam optics and coupling.

Contribution

It introduces a novel interaction region design that accommodates a large detector with a solenoidal field, improving luminosity while managing beam optics complexities.

Findings

Enhanced luminosity with large crossing angle achieved

Successful adaptation of the design for a detector with solenoidal field

Significant beam optics and coupling control demonstrated

Abstract

An innovatory interaction region has been recently conceived and realized on the Frascati DA{\Phi}NE lepton collider. The concept of tight focusing and small crossing angle adopted until now to achieve high luminosity in multibunch collisions has evolved towards enhanced beam focusing at the interaction point with large horizontal crossing angle, thanks to a new compensation mechanism for the beam-beam resonances. The novel configuration has been tested with a small detector without solenoidal field yielding a remarkable improvement in terms of peak as well as integrated luminosity. The high luminosity interaction region has now been modified to host a large detector with a strong solenoidal field which significantly perturbs the beam optics introducing new design challenges in terms of interaction region optics design, beam transverse coupling control and beam stay clear requirements