Merlin++, a flexible and feature-rich accelerator physics and particle tracking library

TL;DR

Merlin++ is a comprehensive C++ library for simulating and analyzing complex beam dynamics in high energy particle accelerators, supporting long-term tracking with various physics processes and optimized for speed.

Contribution

It introduces a feature-rich, flexible accelerator physics library with advanced physics modeling, optimized for multicore processors, and suitable for detailed beam dynamics studies.

Findings

Supports both linear and circular accelerator simulations

Includes physics processes like RF acceleration, synchrotron radiation, and collimation

Optimized for speed and long-term tracking accuracy

Abstract

Merlin++ is a C++ charged-particle tracking library developed for the simulation and analysis of complex beam dynamics within high energy particle accelerators. Accurate simulation and analysis of particle dynamics is an essential part of the design of new particle accelerators, and for the optimization of existing ones. Merlin++ is a feature-full library with focus on long-term tracking studies. A user may simulate distributions of protons or electrons in either single particle or sliced macro-particle bunches. The tracking code includes both straight and curvilinear coordinate systems allowing for the simulation of either linear or circular accelerator lattice designs, and uses a fast and accurate explicit symplectic integrator. Physics processes for common design studies have been implemented, including RF cavity acceleration, synchrotron radiation damping, on-line physical aperture checks and collimation, proton scattering, wakefield simulation, and spin-tracking. Merlin++ was written using C++ object orientated design practices and has been optimized for speed using multicore processors. This article presents an account of the program, including its functionality and guidance for use.