IBIC2025 - 14th International Beam Instrumentation Conference

UV–VIS Emissions from High Energy Heavy Ions: Mechanisms and Applications to Single-Ion Detection

MOPMO28

8 Sept 2025, 16:00

2h

Mountford Hall, Liverpool Guild of Students

Poster Presentation MC01: Beam Charge and Current Monitors MOPMO

Speaker

Rupeshkumar Ghagi (University of Liverpool, Cockcroft Institute, GSI Helmholtz Centre for Heavy Ion Research)

Description

We investigate two well known ultraviolet–visible (UV–VIS) photon emission processes from highly charged uranium ions with energies of 300- 700 MeV/u. By combining theoretical models with estimates from the literature, we evaluate fluorescence yields from air and transition radiation from surfaces. Experimental studies with slow-extracted (U^{73+}) beam at the high-energy beam transport line at GSI–FAIR confirm the feasibility of single-ion detection, with prototype detectors achieving up to 99.5\% efficiency. These findings establish UV–VIS emission as a robust method for fast, radiation-hard single-particle counting and provide a foundation for further optimization of optical collection and detector design.

Funding Agency

This work is supported by the STFC Liverpool Centre for Doctoral Training for Innovation in Data Intensive Science (LIV.INNO) under grant agreement ST/W006766/1 and GSI/FAIR Innovation Fund for Techno