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Laser with non-electron plasma #1002

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merged 6 commits into from
Dec 20, 2023
Merged

Laser with non-electron plasma #1002

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465ddf8
Allow laser with non electron plasma
AlexanderSinn Jul 31, 2023
8fcb44d
merge dev
AlexanderSinn Aug 3, 2023
ed0cf73
Merge branch 'development' into Allow_laser_with_non_electron_plasma
AlexanderSinn Sep 13, 2023
9ad2383
remove assert
AlexanderSinn Sep 27, 2023
afcab3a
Merge branch 'development' into Allow_laser_with_non_electron_plasma
AlexanderSinn Dec 6, 2023
8af527d
merge dev
AlexanderSinn Dec 6, 2023
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1 change: 0 additions & 1 deletion src/Hipace.cpp
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Expand Up @@ -335,7 +335,6 @@ Hipace::Evolve ()

if (m_multi_laser.m_use_laser) {
AMREX_ALWAYS_ASSERT(!m_adaptive_time_step.m_do_adaptive_time_step);
AMREX_ALWAYS_ASSERT(m_multi_plasma.GetNPlasmas() <= 1);
}

m_physical_time = step == 0 ? m_initial_time : m_multi_buffer.get_time();
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5 changes: 3 additions & 2 deletions src/particles/deposition/ExplicitDeposition.cpp
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Expand Up @@ -126,16 +126,18 @@ ExplicitDeposition (PlasmaParticleContainer& plasma, Fields& fields, const Multi
amrex::Real Aabssqp = 0._rt;
// Rename variable for NVCC lambda capture to work
[[maybe_unused]] auto laser_arr = a_laser_arr;
[[maybe_unused]] auto laser_fac = a_laser_fac;
if constexpr (use_laser.value) {
// Its important that Aabssqp is first fully gathered and not used
// directly per cell like AabssqDxp and AabssqDyp
doLaserGatherShapeN<depos_order>(xp, yp, Aabssqp, laser_arr,
dx_inv, dy_inv, x_pos_offset, y_pos_offset);
Aabssqp *= laser_fac * q_mass_ratio * q_mass_ratio;
}

// calculate gamma/psi for plasma particles
const amrex::Real gamma_psi = 0.5_rt * (
(1._rt + 0.5_rt * Aabssqp) * psi_inv * psi_inv // TODO: fix units
(1._rt + 0.5_rt * Aabssqp) * psi_inv * psi_inv
+ vx * vx
+ vy * vy
+ 1._rt
Expand Down Expand Up @@ -171,7 +173,6 @@ ExplicitDeposition (PlasmaParticleContainer& plasma, Fields& fields, const Multi
amrex::Real AabssqDxp = 0._rt;
amrex::Real AabssqDyp = 0._rt;
// Rename variables for NVCC lambda capture to work
[[maybe_unused]] auto laser_fac = a_laser_fac;
[[maybe_unused]] auto clight = a_clight;
if constexpr (use_laser.value) {
// avoid going outside of domain
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8 changes: 7 additions & 1 deletion src/particles/deposition/PlasmaDepositCurrent.cpp
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Expand Up @@ -90,6 +90,8 @@ DepositCurrent (PlasmaParticleContainer& plasma, Fields & fields, const MultiLas
const amrex::Real clightinv = 1.0_rt/pc.c;
const amrex::Real charge_invvol = charge * invvol;
const amrex::Real charge_mu0_mass_ratio = charge * pc.mu0 / mass;
const amrex::Real laser_norm = (charge/pc.q_e) * (pc.m_e/mass)
* (charge/pc.q_e) * (pc.m_e/mass);

int n_qsa_violation = 0;
amrex::Gpu::DeviceScalar<int> gpu_n_qsa_violation(n_qsa_violation);
Expand Down Expand Up @@ -199,9 +201,12 @@ DepositCurrent (PlasmaParticleContainer& plasma, Fields & fields, const MultiLas
// calculate charge of the plasma particles
amrex::Real q_invvol = charge_invvol * ptd.rdata(PlasmaIdx::w)[ip];
amrex::Real q_mu0_mass_ratio = charge_mu0_mass_ratio;
[[maybe_unused]] amrex::Real laser_norm_ion = laser_norm;
if constexpr (can_ionize.value) {
q_invvol *= ptd.idata(PlasmaIdx::ion_lev)[ip];
q_mu0_mass_ratio *= ptd.idata(PlasmaIdx::ion_lev)[ip];
laser_norm_ion *=
ptd.idata(PlasmaIdx::ion_lev)[ip] * ptd.idata(PlasmaIdx::ion_lev)[ip];
}

const amrex::Real xmid = (xp - x_pos_offset) * dx_inv;
Expand All @@ -212,11 +217,12 @@ DepositCurrent (PlasmaParticleContainer& plasma, Fields & fields, const MultiLas
if constexpr (use_laser.value) {
doLaserGatherShapeN<depos_order_xy>(xp, yp, Aabssqp, laser_arr,
dx_inv, dy_inv, x_pos_offset, y_pos_offset);
Aabssqp *= laser_norm_ion;
}

// calculate gamma/psi for plasma particles
const amrex::Real gamma_psi = 0.5_rt * (
(1._rt + 0.5_rt * Aabssqp) * psi_inv * psi_inv // TODO: fix units
(1._rt + 0.5_rt * Aabssqp) * psi_inv * psi_inv
+ vx_c * vx_c * clightinv * clightinv
+ vy_c * vy_c * clightinv * clightinv
+ 1._rt
Expand Down
12 changes: 8 additions & 4 deletions src/particles/pusher/PlasmaParticleAdvance.cpp
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Expand Up @@ -77,7 +77,8 @@ AdvancePlasmaParticles (PlasmaParticleContainer& plasma, const Fields & fields,
const auto setPositionEnforceBC = EnforceBCandSetPos<PTileType>(gm[0]);
const amrex::Real dz = gm[0].CellSize(2) / n_subcycles;

const amrex::Real me_clight_mass_ratio = phys_const.c * phys_const.m_e/plasma.m_mass;
const amrex::Real laser_norm = (plasma.m_charge/phys_const.q_e) * (phys_const.m_e/plasma.m_mass)
* (plasma.m_charge/phys_const.q_e) * (phys_const.m_e/plasma.m_mass);
const amrex::Real clight = phys_const.c;
const amrex::Real clight_inv = 1._rt/phys_const.c;
const amrex::Real charge_mass_clight_ratio = plasma.m_charge/(plasma.m_mass * phys_const.c);
Expand Down Expand Up @@ -114,8 +115,11 @@ AdvancePlasmaParticles (PlasmaParticleContainer& plasma, const Fields & fields,
amrex::Real Aabssqp = 0._rt, AabssqDxp = 0._rt, AabssqDyp = 0._rt;

amrex::Real q_mass_clight_ratio = charge_mass_clight_ratio;
amrex::Real laser_norm_ion = laser_norm;
if (can_ionize) {
q_mass_clight_ratio *= ptd.idata(PlasmaIdx::ion_lev)[ip];
laser_norm_ion *=
ptd.idata(PlasmaIdx::ion_lev)[ip] * ptd.idata(PlasmaIdx::ion_lev)[ip];
}

for (int i = 0; i < n_subcycles; i++) {
Expand All @@ -141,9 +145,9 @@ AdvancePlasmaParticles (PlasmaParticleContainer& plasma, const Fields & fields,

Bxp *= clight;
Byp *= clight;
Aabssqp *= 0.5_rt; // TODO: fix units of Aabssqp
AabssqDxp *= 0.25_rt * me_clight_mass_ratio;
AabssqDyp *= 0.25_rt * me_clight_mass_ratio;
Aabssqp *= 0.5_rt * laser_norm_ion;
AabssqDxp *= 0.25_rt * clight * laser_norm_ion;
AabssqDyp *= 0.25_rt * clight * laser_norm_ion;
}

#ifndef HIPACE_USE_AB5_PUSH
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6 changes: 3 additions & 3 deletions src/particles/pusher/PushPlasmaParticles.H
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Expand Up @@ -29,9 +29,9 @@ struct PlasmaMomentumDerivative {
* \param[in] Bx_clight Bx * clight
* \param[in] By_clight By * clight
* \param[in] Bz Bz
* \param[in] Aabssq_norm Aabssqp * 0.5 TODO: fix units of Aabssqp
* \param[in] AabssqDx_norm AabssqDx * 0.25 * clight * m_e / mass
* \param[in] AabssqDy_norm AabssqDy * 0.25 * clight * m_e / mass
* \param[in] Aabssq_norm Aabssqp * 0.5 * (charge / q_e)^2 * (m_e / mass)^2
* \param[in] AabssqDx_norm AabssqDx * 0.25 * clight * (charge / q_e)^2 * (m_e / mass)^2
* \param[in] AabssqDy_norm AabssqDy * 0.25 * clight * (charge / q_e)^2 * (m_e / mass)^2
* \param[in] clight_inv 1 / clight
* \param[in] charge_mass_clight_ratio charge / (mass * clight)
*/
Expand Down
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