Speaker
Description
FoCal is a high-granularity forward calorimeter to be installed as an ALICE upgrade subsystem during the LHC Long Shutdown 3 and take data during the LHC Run 4. It consists of a compact silicon-tungsten sampling electromagnetic calorimeter (FoCal-E) with pad and pixel longitudinal and transverse segmented readout layers to achieve high spatial resolution for discriminating between isolated photons and decay photon pairs. Its hadronic component (FoCal-H) is constructed from copper capillary tubes filled with scintillator fibers and used for isolation energy measurement and jets.
The FoCal detector extends the ALICE physics programme with the capability, unique at the LHC, to investigate gluon Parton Distribution Functions (PDFs) down to Bjorken-x of ~10^-6 at a momentum transfer Q ~ 4GeV/c, where these are expected to behave non-linearly due to the high gluon densities, with direct photon measurements. Additionally, FoCal allows forward jet measurements in pp and p-Pb collisions, including gamma-jet and jet-jet correlations, but also photo-production of vector mesons such as the J/psi in proton-Pb and Pb-Pb ultra-peripheral collisions.
In this presentation we will discuss the small-x physics potential of the FoCal detector and present projected detector performance studies for its main physics observables.
| What kind of work does this abstract pertain to? | Experimental |
|---|---|
| Which experiment is this abstract related to? | ALICE |
