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1 | /* |
2 | <one line to give the program's name and a brief idea of what it does.> | |
3 | Copyright (C) <year> <name of author> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along | |
16 | with this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | */ | |
20 | ||
21 | #include "starlightdpmjet.h" | |
22 | #include "spectrum.h" | |
23 | #include <iostream> | |
24 | #include <spectrumprotonnucleus.h> | |
25 | #include "starlightconfig.h" | |
26 | ||
27 | ||
28 | extern "C" | |
29 | { | |
30 | extern struct | |
31 | { | |
32 | ||
33 | double slpx[200000]; | |
34 | double slpy[200000]; | |
35 | double slpz[200000]; | |
36 | double sle[200000]; | |
37 | double slm[200000]; | |
38 | int slpid[200000]; | |
39 | int slcharge[200000]; | |
40 | ||
41 | } dpmjetparticle_; | |
42 | ||
43 | void dt_produceevent_(float* gammaE, int* nparticles); | |
44 | void dt_getparticle_(int *ipart, int *res); | |
45 | void dt_initialise_(); | |
46 | } | |
47 | ||
48 | starlightDpmJet::starlightDpmJet(beamBeamSystem& beamsystem ) : eventChannel(beamsystem) | |
49 | ,_spectrum(0) | |
50 | ,_doDoubleEvent(true) | |
51 | ,_minGammaEnergy(6.0) | |
52 | ,_maxGammaEnergy(600000.0) | |
53 | ,_protonMode(false) | |
54 | { | |
55 | ||
56 | } | |
57 | ||
58 | int starlightDpmJet::init() | |
59 | { | |
60 | if(_protonMode) | |
61 | { | |
62 | _spectrum = new spectrumProtonNucleus(&_bbs); | |
63 | } | |
64 | else | |
65 | { | |
66 | _spectrum = new spectrum(&_bbs); | |
67 | } | |
68 | ||
69 | _spectrum->setMinGammaEnergy(_minGammaEnergy); | |
70 | _spectrum->setMaxGammaEnergy(_maxGammaEnergy); | |
71 | ||
72 | if(!_doDoubleEvent) | |
73 | { | |
74 | _spectrum->generateKsingle(); | |
75 | } | |
76 | else | |
77 | { | |
78 | _spectrum->generateKdouble(); | |
79 | } | |
80 | ||
81 | return 0; | |
82 | ||
83 | } | |
84 | ||
85 | ||
86 | upcEvent starlightDpmJet::produceEvent() | |
87 | { | |
88 | ||
89 | upcEvent event; | |
90 | ||
91 | if (!_doDoubleEvent) | |
92 | { | |
93 | //int zdirection = (Randy.Rndom()) < 0.5 ? -1 : 1; | |
94 | int zdirection = 1; | |
95 | float gammaE = _spectrum->drawKsingle(); | |
96 | event = produceSingleEvent(zdirection, gammaE); | |
97 | // std::cout << "Gamma energy: " << gammaE << std::endl; | |
98 | } | |
99 | else | |
100 | { | |
101 | event = produceDoubleEvent(); | |
102 | } | |
103 | ||
104 | return event; | |
105 | } | |
106 | ||
107 | upcEvent starlightDpmJet::produceSingleEvent(int zdirection, float gammaE) | |
108 | { | |
109 | ||
110 | upcEvent event; | |
111 | event.addGamma(gammaE); | |
112 | ||
113 | int nParticles = 0; | |
114 | ||
115 | dt_produceevent_(&gammaE, &nParticles); | |
116 | ||
117 | ||
118 | //In which direction do we go? | |
119 | double rapidity = _bbs.beam1().rapidity()*zdirection; | |
120 | ||
121 | for (int i = 0; i < nParticles; i++) | |
122 | { | |
123 | starlightParticle particle(dpmjetparticle_.slpx[i], dpmjetparticle_.slpy[i], zdirection*dpmjetparticle_.slpz[i], dpmjetparticle_.sle[i], dpmjetparticle_.slm[i], dpmjetparticle_.slpid[i], dpmjetparticle_.slcharge[i]); | |
124 | vector3 boostVector(0, 0, tanh(-rapidity)); | |
125 | particle.Boost(boostVector); | |
126 | event.addParticle(particle); | |
127 | } | |
128 | return event; | |
129 | } | |
130 | ||
131 | upcEvent starlightDpmJet::produceDoubleEvent() | |
132 | { | |
133 | upcEvent event; | |
134 | ||
135 | float gammaE1 = 0.0; | |
136 | float gammaE2 = 0.0; | |
137 | ||
138 | _spectrum->drawKdouble(gammaE1, gammaE2); | |
139 | ||
140 | // std::cout << "Gamma1 energy: " << gammaE1 << std::endl; | |
141 | //std::cout << "Gamma2 energy: " << gammaE2 << std::endl; | |
142 | ||
143 | //In which direction do we go? | |
144 | int zdirection = (randyInstance.Rndom()) < 0.5 ? -1 : 1; | |
145 | ||
146 | event = produceSingleEvent(zdirection, gammaE1); | |
147 | ||
148 | zdirection = zdirection *-1; | |
149 | ||
150 | event = event + produceSingleEvent(zdirection, gammaE2); | |
151 | ||
152 | return event; | |
153 | } | |
154 | ||
155 |