Köln 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 21: Instrumentation VI

HK 21.5: Vortrag

Dienstag, 11. März 2025, 17:00–17:15, SR Exp1B Chemie

Simulation studies of the Forward Conversion Tracker for ALICE 3 — •Cas van Veen for the ALICE Germany collaboration — Physikalisches Institut, Heidelberg, Germany

During the Long Shutdown 4 of the Large Hadron Collider, ALICE will upgrade its complete detector to address new physics cases with unprecedented resolution and higher interaction rates, called ALICE 3. The Forward Conversion Tracker (FCT), located in the forward direction, will measure the photon spectrum predicted by Low’s theorem in proton-proton collisions at √s= 14 TeV to address the long standing "soft-photon puzzle". The focus of this talk will be on the status of the simulation studies of the FCT. The O2 framework of ALICE allows for detailed, full simulations of proton-proton collisions including transportation through the detector setup of ALICE 3. The background bremsstrahlung generated by charged particles passing through material in front of the FCT is a major challenge for this study and strategies to reduce this background will be presented. This can be accomplished by an electron particle identification detector (ePID) behind the FCT in the form of a ring imaging Cherenkov detector (RICH) that provides a veto on the events containing an electron that is not part of the signal electron-positron pair.

Keywords: ALICE 3; Forward conversion tracker; Low's theorem; Soft-photon puzzle