Chromatic Calorimetry -- A Novel Approach to Validate Energy Resolution and Particle Discrimination

2025/09/11 by Divya Arora, Arora, Devanshi
Physics and Astronomy · #Particle physics theoretical and experimental studies #Particle Detector Development and Performance #Radiation Detection and Scintillator Technologies

paper · pdf · doi:10.48550/arxiv.2509.09511

Abstract

Chromatic calorimetry (CCAL) analyses particle detection by utilizing scintillators with distinct emission wavelengths to measure the longitudinal energy deposition of particle showers in high-energy physics, improving particle identification (PID) and energy resolution. By stacking scintillators in order of decreasing emission wavelength, CCAL enables layer-specific energy measurements, analyzed via amplitude fractions (f_i = A_i / ∑_j A_j) and center of gravity (⟨ z_cog ⟩ = ∑_i z_i E_i / ∑_i E_i). This thesis presents results from two CERN Super Proton Synchrotron (SPS) experiments conducted in 2023 and 2024, complemented by GEANT4 simulations of a quantum dot (QD)-based CCAL design, to validate its potential for future colliders such as the Future Circular Collider (FCC).

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