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/* Copyright 2021 Neil Zaim
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#include "ParticleCreationFunc.H"
#include "BinaryCollisionUtils.H"
#include "Particles/MultiParticleContainer.H"
#include "Utils/TextMsg.H"
#include <AMReX_GpuContainers.H>
#include <AMReX_ParmParse.H>
#include <AMReX_Vector.H>
#include <string>
ParticleCreationFunc::ParticleCreationFunc (const std::string collision_name,
MultiParticleContainer const * const mypc)
{
const amrex::ParmParse pp_collision_name(collision_name);
m_collision_type = BinaryCollisionUtils::get_collision_type(collision_name, mypc);
if (m_collision_type == CollisionType::ProtonBoronToAlphasFusion)
{
// Proton-Boron fusion only produces alpha particles
m_num_product_species = 1;
// Proton-Boron fusion produces 3 alpha particles per fusion reaction
m_num_products_host.push_back(3);
#ifndef AMREX_USE_GPU
// On CPU, the device vector can be filled immediatly
m_num_products_device.push_back(3);
#endif
}
else if ((m_collision_type == CollisionType::DeuteriumTritiumToNeutronHeliumFusion)
|| (m_collision_type == CollisionType::DeuteriumDeuteriumToProtonTritiumFusion)
|| (m_collision_type == CollisionType::DeuteriumDeuteriumToNeutronHeliumFusion))
{
m_num_product_species = 2;
m_num_products_host.push_back(1);
m_num_products_host.push_back(1);
#ifndef AMREX_USE_GPU
// On CPU, the device vector can be filled immediatly
m_num_products_device.push_back(1);
m_num_products_device.push_back(1);
#endif
}
else
{
WARPX_ABORT_WITH_MESSAGE("Unknown collision type in ParticleCreationFunc");
}
#ifdef AMREX_USE_GPU
m_num_products_device.resize(m_num_product_species);
amrex::Gpu::copyAsync(amrex::Gpu::hostToDevice, m_num_products_host.begin(),
m_num_products_host.end(),
m_num_products_device.begin());
amrex::Gpu::streamSynchronize();
#endif
}
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