The 27th International Conference on Accelerators and Beam Utilizations

Transverse Phase Space Characterization and Benchmarking Studies Using Multi-Diagnostic Techniques at the KOMAC Beam Test Stand

Nov 13, 2025, 11:55 AM

15m

5F Grand Hall (LAHAN Hotel)

Oral Working group 2: Beam physics, diagnostics and novel techniques

Speaker

Mr Emre Cosgun (UNIST, KAERI)

Description

We characterize the space charge-dominated 1 MeV/nucleon proton beam at the Beam Test Stand (BTS) of the Korea Multipurpose Accelerator Complex (KOMAC) through comprehensive transverse beam diagnostics and phase space analysis. A suite of diagnostic tools, including a conventional pepper-pot (PP), virtual pepper-pot (VPP), Allison scanner, and multi-slit system, is employed to measure the beam distributions under varying space charge conditions. The dynamics and optimization of space charge compensation (SCC) in the Low Energy Beam Transport (LEBT) line are investigated through time-resolved measurements. Experimental benchmarking between the VPP and conventional pepper-pot methods demonstrates strong agreement, validating the accuracy of the multi-diagnostic approach. Furthermore, by utilizing the generative phase space reconstruction algorithm based on neural networks and differentiable simulations, we investigate the phase space reconstruction by considering both the matrix calibration and self-consistent beam propagation.