10 #ifndef IMPACTX_DRIFT_H 11 #define IMPACTX_DRIFT_H 29 static constexpr
auto name =
"Drift";
43 using BeamOptic::operator();
55 PType& AMREX_RESTRICT p,
56 amrex::ParticleReal & AMREX_RESTRICT px,
57 amrex::ParticleReal & AMREX_RESTRICT py,
58 amrex::ParticleReal & AMREX_RESTRICT pt,
59 RefPart const & refpart)
const {
61 using namespace amrex::literals;
64 amrex::ParticleReal
const x = p.pos(0);
65 amrex::ParticleReal
const y = p.pos(1);
66 amrex::ParticleReal
const t = p.pos(2);
69 amrex::ParticleReal pxout = px;
70 amrex::ParticleReal pyout = py;
71 amrex::ParticleReal ptout = pt;
74 amrex::ParticleReal
const slice_ds =
m_ds /
nslice();
77 amrex::ParticleReal
const pt_ref = refpart.
pt;
78 amrex::ParticleReal
const betgam2 =
pow(pt_ref, 2) - 1.0_prt;
81 p.pos(0) = x + slice_ds * px;
83 p.pos(1) = y + slice_ds * py;
85 p.pos(2) = t + (slice_ds/betgam2) * pt;
102 using namespace amrex::literals;
105 amrex::ParticleReal
const x = refpart.x;
106 amrex::ParticleReal
const px = refpart.px;
107 amrex::ParticleReal
const y = refpart.y;
108 amrex::ParticleReal
const py = refpart.py;
109 amrex::ParticleReal
const z = refpart.z;
110 amrex::ParticleReal
const pz = refpart.pz;
111 amrex::ParticleReal
const t = refpart.t;
112 amrex::ParticleReal
const pt = refpart.pt;
113 amrex::ParticleReal
const s = refpart.s;
116 amrex::ParticleReal
const slice_ds =
m_ds /
nslice();
119 amrex::ParticleReal
const step = slice_ds /
sqrt(
pow(pt,2)-1.0_prt);
122 refpart.x = x + step*px;
123 refpart.y = y + step*py;
124 refpart.z = z + step*pz;
125 refpart.t = t - step*pt;
128 refpart.s = s + slice_ds;
135 #endif // IMPACTX_DRIFT_H
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE void operator()(PType &AMREX_RESTRICT p, amrex::ParticleReal &AMREX_RESTRICT px, amrex::ParticleReal &AMREX_RESTRICT py, amrex::ParticleReal &AMREX_RESTRICT pt, RefPart const &refpart) const
Definition: Drift.H:54
Drift(amrex::ParticleReal const ds, int const nslice)
Definition: Drift.H:37
Definition: ImpactX.cpp:31
Definition: beamoptic.H:134
amrex::ParticleReal pt
energy deviation, normalized by rest energy
Definition: ReferenceParticle.H:39
static constexpr auto name
Definition: Drift.H:29
#define AMREX_FORCE_INLINE
#define AMREX_GPU_HOST_DEVICE
Particle< NStructReal, NStructInt > ParticleType
Thick(amrex::ParticleReal const ds, int const nslice)
Definition: thick.H:30
Definition: ReferenceParticle.H:29
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE GpuComplex< T > pow(const GpuComplex< T > &a_z, const T &a_y) noexcept
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::ParticleReal ds() const
Definition: thick.H:50
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE int nslice() const
Definition: thick.H:40
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE GpuComplex< T > sqrt(const GpuComplex< T > &a_z) noexcept
amrex::ParticleReal m_ds
Definition: thick.H:56