EmittanceInvariants.H

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/* Copyright 2022-2026 The Regents of the University of California, through Lawrence
 *           Berkeley National Laboratory (subject to receipt of any required
 *           approvals from the U.S. Dept. of Energy). All rights reserved.
 *
 * This file is part of ImpactX.
 *
 * Authors: Marco Garten, Chad Mitchell, Axel Huebl
 * License: BSD-3-Clause-LBNL
 */
#ifndef IMPACTX_EMITTANCE_INVARIANTS
#define IMPACTX_EMITTANCE_INVARIANTS
 
#include "particles/ImpactXParticleContainer.H"
 
#include <AMReX_REAL.H>
#include <AMReX_SmallMatrix.H>
 
#include <string>
#include <tuple>
 
 
namespace impactx::diagnostics
{

    std::tuple<
        amrex::ParticleReal,
        amrex::ParticleReal,
        amrex::ParticleReal
    >
    KineticInvariants (
        amrex::SmallMatrix<amrex::ParticleReal, 6, 6, amrex::Order::F, 1> const & Sigma
    );

    std::tuple<
        amrex::ParticleReal,
        amrex::ParticleReal,
        amrex::ParticleReal
    >
    Eigenemittances (
        amrex::SmallMatrix<amrex::ParticleReal, 6, 6, amrex::Order::F, 1> const & Sigma
    );
 
} // namespace impactx::diagnostics
 
#endif // IMPACTX_EMITTANCE_INVARIANTS