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50  <h1>Source code for sas.calculator.instrument</h1><div class="highlight"><pre>
51<span class="sd">&quot;&quot;&quot;</span>
52<span class="sd">This module is a small tool to allow user to</span>
53<span class="sd">control instrumental parameters</span>
54<span class="sd">&quot;&quot;&quot;</span>
55<span class="kn">import</span> <span class="nn">numpy</span>
56
57<span class="c"># defaults in cgs unit</span>
58<span class="n">_SAMPLE_A_SIZE</span> <span class="o">=</span> <span class="p">[</span><span class="mf">1.27</span><span class="p">]</span>
59<span class="n">_SOURCE_A_SIZE</span> <span class="o">=</span> <span class="p">[</span><span class="mf">3.81</span><span class="p">]</span>
60<span class="n">_SAMPLE_DISTANCE</span> <span class="o">=</span> <span class="p">[</span><span class="mi">1627</span><span class="p">,</span> <span class="mi">0</span><span class="p">]</span>
61<span class="n">_SAMPLE_OFFSET</span> <span class="o">=</span> <span class="p">[</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">]</span>
62<span class="n">_SAMPLE_SIZE</span> <span class="o">=</span> <span class="p">[</span><span class="mf">2.54</span><span class="p">]</span>
63<span class="n">_SAMPLE_THICKNESS</span> <span class="o">=</span> <span class="mf">0.2</span>
64<span class="n">_D_DISTANCE</span> <span class="o">=</span> <span class="p">[</span><span class="mi">1000</span><span class="p">,</span> <span class="mi">0</span><span class="p">]</span>
65<span class="n">_D_SIZE</span> <span class="o">=</span> <span class="p">[</span><span class="mi">128</span><span class="p">,</span> <span class="mi">128</span><span class="p">]</span>
66<span class="n">_D_PIX_SIZE</span> <span class="o">=</span> <span class="p">[</span><span class="mf">0.5</span><span class="p">,</span> <span class="mf">0.5</span><span class="p">]</span>
67
68<span class="n">_MIN</span> <span class="o">=</span> <span class="mf">0.0</span>
69<span class="n">_MAX</span> <span class="o">=</span> <span class="mf">50.0</span>
70<span class="n">_INTENSITY</span> <span class="o">=</span> <span class="mi">368428</span>
71<span class="n">_WAVE_LENGTH</span> <span class="o">=</span> <span class="mf">6.0</span>
72<span class="n">_WAVE_SPREAD</span> <span class="o">=</span> <span class="mf">0.125</span>
73<span class="n">_MASS</span> <span class="o">=</span> <span class="mf">1.67492729E-24</span>  <span class="c"># [gr]</span>
74<span class="n">_LAMBDA_ARRAY</span> <span class="o">=</span> <span class="p">[[</span><span class="mi">0</span><span class="p">,</span> <span class="mf">1e+16</span><span class="p">],</span> <span class="p">[</span><span class="n">_INTENSITY</span><span class="p">,</span> <span class="n">_INTENSITY</span><span class="p">]]</span>
75
76
77<div class="viewcode-block" id="Aperture"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Aperture">[docs]</a><span class="k">class</span> <span class="nc">Aperture</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
78    <span class="sd">&quot;&quot;&quot;</span>
79<span class="sd">    An object class that defines the aperture variables</span>
80<span class="sd">    &quot;&quot;&quot;</span>
81    <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
82       
83        <span class="c"># assumes that all aligned at the centers</span>
84        <span class="c"># aperture_size [diameter] for pinhole, [dx, dy] for rectangular</span>
85        <span class="bp">self</span><span class="o">.</span><span class="n">sample_size</span> <span class="o">=</span> <span class="n">_SAMPLE_A_SIZE</span>
86        <span class="bp">self</span><span class="o">.</span><span class="n">source_size</span> <span class="o">=</span> <span class="n">_SOURCE_A_SIZE</span>
87        <span class="bp">self</span><span class="o">.</span><span class="n">sample_distance</span> <span class="o">=</span> <span class="n">_SAMPLE_DISTANCE</span>
88       
89<div class="viewcode-block" id="Aperture.set_source_size"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Aperture.set_source_size">[docs]</a>    <span class="k">def</span> <span class="nf">set_source_size</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">size</span><span class="o">=</span><span class="p">[]):</span>
90        <span class="sd">&quot;&quot;&quot;</span>
91<span class="sd">        Set the source aperture size</span>
92<span class="sd">        &quot;&quot;&quot;</span>
93        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">size</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
94            <span class="bp">self</span><span class="o">.</span><span class="n">source_size</span> <span class="o">=</span> <span class="mf">0.0</span>
95        <span class="k">else</span><span class="p">:</span>
96            <span class="bp">self</span><span class="o">.</span><span class="n">source_size</span> <span class="o">=</span> <span class="n">size</span>
97            <span class="n">validate</span><span class="p">(</span><span class="n">size</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
98            </div>
99<div class="viewcode-block" id="Aperture.set_sample_size"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Aperture.set_sample_size">[docs]</a>    <span class="k">def</span> <span class="nf">set_sample_size</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">size</span><span class="o">=</span><span class="p">[]):</span>
100        <span class="sd">&quot;&quot;&quot;</span>
101<span class="sd">        Set the sample aperture size</span>
102<span class="sd">        &quot;&quot;&quot;</span>
103        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">size</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
104            <span class="bp">self</span><span class="o">.</span><span class="n">sample_size</span> <span class="o">=</span> <span class="mf">0.0</span>
105        <span class="k">else</span><span class="p">:</span>
106            <span class="bp">self</span><span class="o">.</span><span class="n">sample_size</span> <span class="o">=</span> <span class="n">size</span>
107            <span class="n">validate</span><span class="p">(</span><span class="n">size</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
108            </div>
109<div class="viewcode-block" id="Aperture.set_sample_distance"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Aperture.set_sample_distance">[docs]</a>    <span class="k">def</span> <span class="nf">set_sample_distance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">distance</span><span class="o">=</span><span class="p">[]):</span>
110        <span class="sd">&quot;&quot;&quot;</span>
111<span class="sd">        Set the sample aperture distance</span>
112<span class="sd">        &quot;&quot;&quot;</span>
113        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">distance</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
114            <span class="bp">self</span><span class="o">.</span><span class="n">sample_distance</span> <span class="o">=</span> <span class="mf">0.0</span>
115        <span class="k">else</span><span class="p">:</span>
116            <span class="bp">self</span><span class="o">.</span><span class="n">sample_distance</span> <span class="o">=</span> <span class="n">distance</span>
117            <span class="n">validate</span><span class="p">(</span><span class="n">distance</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
118       
119   </div></div>
120<div class="viewcode-block" id="Sample"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Sample">[docs]</a><span class="k">class</span> <span class="nc">Sample</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
121    <span class="sd">&quot;&quot;&quot;</span>
122<span class="sd">    An object class that defines the sample variables</span>
123<span class="sd">    &quot;&quot;&quot;</span>
124    <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
125       
126        <span class="c"># assumes that all aligned at the centers</span>
127        <span class="c"># source2sample or sample2detector distance</span>
128        <span class="bp">self</span><span class="o">.</span><span class="n">distance</span> <span class="o">=</span> <span class="n">_SAMPLE_OFFSET</span>
129        <span class="bp">self</span><span class="o">.</span><span class="n">size</span> <span class="o">=</span> <span class="n">_SAMPLE_SIZE</span>
130        <span class="bp">self</span><span class="o">.</span><span class="n">thickness</span> <span class="o">=</span> <span class="n">_SAMPLE_THICKNESS</span>
131
132<div class="viewcode-block" id="Sample.set_size"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Sample.set_size">[docs]</a>    <span class="k">def</span> <span class="nf">set_size</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">size</span><span class="o">=</span><span class="p">[]):</span>
133        <span class="sd">&quot;&quot;&quot;</span>
134<span class="sd">        Set the sample size</span>
135<span class="sd">        &quot;&quot;&quot;</span>
136        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">size</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
137            <span class="bp">self</span><span class="o">.</span><span class="n">sample_size</span> <span class="o">=</span> <span class="mf">0.0</span>
138        <span class="k">else</span><span class="p">:</span>
139            <span class="bp">self</span><span class="o">.</span><span class="n">sample_size</span> <span class="o">=</span> <span class="n">size</span>
140            <span class="n">validate</span><span class="p">(</span><span class="n">size</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
141            </div>
142<div class="viewcode-block" id="Sample.set_thickness"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Sample.set_thickness">[docs]</a>    <span class="k">def</span> <span class="nf">set_thickness</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">thickness</span><span class="o">=</span><span class="mf">0.0</span><span class="p">):</span>
143        <span class="sd">&quot;&quot;&quot;</span>
144<span class="sd">        Set the sample thickness</span>
145<span class="sd">        &quot;&quot;&quot;</span>
146        <span class="bp">self</span><span class="o">.</span><span class="n">thickness</span> <span class="o">=</span> <span class="n">thickness</span>
147        <span class="n">validate</span><span class="p">(</span><span class="n">thickness</span><span class="p">)</span>
148    </div>
149<div class="viewcode-block" id="Sample.set_distance"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Sample.set_distance">[docs]</a>    <span class="k">def</span> <span class="nf">set_distance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">distance</span><span class="o">=</span><span class="p">[]):</span>
150        <span class="sd">&quot;&quot;&quot;</span>
151<span class="sd">        Set the sample distance</span>
152<span class="sd">        &quot;&quot;&quot;</span>
153        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">distance</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
154            <span class="bp">self</span><span class="o">.</span><span class="n">distance</span> <span class="o">=</span> <span class="mf">0.0</span>
155        <span class="k">else</span><span class="p">:</span>
156            <span class="bp">self</span><span class="o">.</span><span class="n">distance</span> <span class="o">=</span> <span class="n">distance</span>
157            <span class="k">if</span> <span class="n">distance</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">!=</span> <span class="mf">0.0</span><span class="p">:</span>
158                <span class="n">validate</span><span class="p">(</span><span class="n">distance</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
159       
160 </div></div>
161<div class="viewcode-block" id="Detector"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Detector">[docs]</a><span class="k">class</span> <span class="nc">Detector</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
162    <span class="sd">&quot;&quot;&quot;</span>
163<span class="sd">    An object class that defines the detector variables</span>
164<span class="sd">    &quot;&quot;&quot;</span>
165    <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
166       
167        <span class="c"># assumes that all aligned at the centers</span>
168        <span class="c"># source2sample or sample2detector distance</span>
169        <span class="bp">self</span><span class="o">.</span><span class="n">distance</span> <span class="o">=</span> <span class="n">_D_DISTANCE</span>
170        <span class="bp">self</span><span class="o">.</span><span class="n">size</span> <span class="o">=</span> <span class="n">_D_SIZE</span>
171        <span class="bp">self</span><span class="o">.</span><span class="n">pix_size</span> <span class="o">=</span> <span class="n">_D_PIX_SIZE</span>
172
173   
174       
175<div class="viewcode-block" id="Detector.set_size"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Detector.set_size">[docs]</a>    <span class="k">def</span> <span class="nf">set_size</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">size</span><span class="o">=</span><span class="p">[]):</span>
176        <span class="sd">&quot;&quot;&quot;</span>
177<span class="sd">        Set the detector  size</span>
178<span class="sd">        &quot;&quot;&quot;</span>
179        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">size</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
180            <span class="bp">self</span><span class="o">.</span><span class="n">size</span> <span class="o">=</span> <span class="mi">0</span>
181        <span class="k">else</span><span class="p">:</span>
182            <span class="bp">self</span><span class="o">.</span><span class="n">size</span> <span class="o">=</span> <span class="n">size</span>
183            <span class="n">validate</span><span class="p">(</span><span class="n">size</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
184            </div>
185<div class="viewcode-block" id="Detector.set_pix_size"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Detector.set_pix_size">[docs]</a>    <span class="k">def</span> <span class="nf">set_pix_size</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">size</span><span class="o">=</span><span class="p">[]):</span>
186        <span class="sd">&quot;&quot;&quot;</span>
187<span class="sd">        Set the detector pix_size</span>
188<span class="sd">        &quot;&quot;&quot;</span>
189        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">size</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
190            <span class="bp">self</span><span class="o">.</span><span class="n">pix_size</span> <span class="o">=</span> <span class="mi">0</span>
191        <span class="k">else</span><span class="p">:</span>
192            <span class="bp">self</span><span class="o">.</span><span class="n">pix_size</span> <span class="o">=</span> <span class="n">size</span>
193            <span class="n">validate</span><span class="p">(</span><span class="n">size</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
194    </div>
195<div class="viewcode-block" id="Detector.set_distance"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Detector.set_distance">[docs]</a>    <span class="k">def</span> <span class="nf">set_distance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">distance</span><span class="o">=</span><span class="p">[]):</span>
196        <span class="sd">&quot;&quot;&quot;</span>
197<span class="sd">        Set the detector distance</span>
198<span class="sd">        &quot;&quot;&quot;</span>
199        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">distance</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
200            <span class="bp">self</span><span class="o">.</span><span class="n">distance</span> <span class="o">=</span> <span class="mi">0</span>
201        <span class="k">else</span><span class="p">:</span>
202            <span class="bp">self</span><span class="o">.</span><span class="n">distance</span> <span class="o">=</span> <span class="n">distance</span>
203            <span class="n">validate</span><span class="p">(</span><span class="n">distance</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
204
205            </div></div>
206<div class="viewcode-block" id="Neutron"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron">[docs]</a><span class="k">class</span> <span class="nc">Neutron</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
207    <span class="sd">&quot;&quot;&quot;</span>
208<span class="sd">    An object that defines the wavelength variables</span>
209<span class="sd">    &quot;&quot;&quot;</span>
210    <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
211       
212        <span class="c"># neutron mass in cgs unit</span>
213        <span class="bp">self</span><span class="o">.</span><span class="n">mass</span> <span class="o">=</span> <span class="n">_MASS</span>
214
215        <span class="c"># wavelength</span>
216        <span class="bp">self</span><span class="o">.</span><span class="n">wavelength</span> <span class="o">=</span> <span class="n">_WAVE_LENGTH</span>
217        <span class="c"># wavelength spread (FWHM)</span>
218        <span class="bp">self</span><span class="o">.</span><span class="n">wavelength_spread</span> <span class="o">=</span> <span class="n">_WAVE_SPREAD</span>
219        <span class="c"># wavelength spectrum</span>
220        <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_default_spectrum</span><span class="p">()</span>
221        <span class="c"># intensity in counts/sec</span>
222        <span class="bp">self</span><span class="o">.</span><span class="n">intensity</span> <span class="o">=</span> <span class="n">numpy</span><span class="o">.</span><span class="n">interp</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">wavelength</span><span class="p">,</span>
223                                      <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
224                                      <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span>
225                                      <span class="mf">0.0</span><span class="p">,</span>
226                                      <span class="mf">0.0</span><span class="p">)</span>
227        <span class="c"># min max range of the spectrum</span>
228        <span class="bp">self</span><span class="o">.</span><span class="n">min</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
229        <span class="bp">self</span><span class="o">.</span><span class="n">max</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
230        <span class="c"># wavelength band</span>
231        <span class="bp">self</span><span class="o">.</span><span class="n">band</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">min</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max</span><span class="p">]</span>
232
233        <span class="c"># default unit of the thickness</span>
234        <span class="bp">self</span><span class="o">.</span><span class="n">wavelength_unit</span> <span class="o">=</span> <span class="s">&#39;A&#39;</span>
235   
236<div class="viewcode-block" id="Neutron.set_full_band"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.set_full_band">[docs]</a>    <span class="k">def</span> <span class="nf">set_full_band</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
237        <span class="sd">&quot;&quot;&quot;</span>
238<span class="sd">        set band to default value</span>
239<span class="sd">        &quot;&quot;&quot;</span>
240        <span class="bp">self</span><span class="o">.</span><span class="n">band</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span>
241        </div>
242<div class="viewcode-block" id="Neutron.set_spectrum"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.set_spectrum">[docs]</a>    <span class="k">def</span> <span class="nf">set_spectrum</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">spectrum</span><span class="p">):</span>
243        <span class="sd">&quot;&quot;&quot;</span>
244<span class="sd">        Set spectrum</span>
245<span class="sd">        </span>
246<span class="sd">        :param spectrum: numpy array</span>
247<span class="sd">        &quot;&quot;&quot;</span>
248        <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span> <span class="o">=</span> <span class="n">spectrum</span>
249        <span class="bp">self</span><span class="o">.</span><span class="n">setup_spectrum</span><span class="p">()</span>
250         </div>
251<div class="viewcode-block" id="Neutron.setup_spectrum"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.setup_spectrum">[docs]</a>    <span class="k">def</span> <span class="nf">setup_spectrum</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
252        <span class="sd">&quot;&quot;&quot;</span>
253<span class="sd">        To set the wavelength spectrum, and intensity, assumes</span>
254<span class="sd">        wavelength is already within the spectrum</span>
255<span class="sd">        &quot;&quot;&quot;</span>
256        <span class="n">spectrum</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span>
257        <span class="n">intensity</span> <span class="o">=</span> <span class="n">numpy</span><span class="o">.</span><span class="n">interp</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">wavelength</span><span class="p">,</span>
258                                      <span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
259                                      <span class="n">spectrum</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span>
260                                      <span class="mf">0.0</span><span class="p">,</span>
261                                      <span class="mf">0.0</span><span class="p">)</span>
262        <span class="bp">self</span><span class="o">.</span><span class="n">set_intensity</span><span class="p">(</span><span class="n">intensity</span><span class="p">)</span>
263        <span class="c"># min max range of the spectrum</span>
264        <span class="bp">self</span><span class="o">.</span><span class="n">min</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
265        <span class="bp">self</span><span class="o">.</span><span class="n">max</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
266        <span class="c"># set default band</span>
267        <span class="bp">self</span><span class="o">.</span><span class="n">set_band</span><span class="p">([</span><span class="bp">self</span><span class="o">.</span><span class="n">min</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max</span><span class="p">])</span>
268        </div>
269<div class="viewcode-block" id="Neutron.set_band"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.set_band">[docs]</a>    <span class="k">def</span> <span class="nf">set_band</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">band</span><span class="o">=</span><span class="p">[]):</span>
270        <span class="sd">&quot;&quot;&quot;</span>
271<span class="sd">        To set the wavelength band</span>
272<span class="sd">        </span>
273<span class="sd">        :param band: array of [min, max]</span>
274<span class="sd">        &quot;&quot;&quot;</span>
275        <span class="c"># check if the wavelength is in range</span>
276        <span class="k">if</span> <span class="nb">min</span><span class="p">(</span><span class="n">band</span><span class="p">)</span> <span class="o">&lt;</span> <span class="bp">self</span><span class="o">.</span><span class="n">min</span> <span class="ow">or</span>\
277                <span class="nb">max</span><span class="p">(</span><span class="n">band</span><span class="p">)</span> <span class="o">&gt;</span> <span class="bp">self</span><span class="o">.</span><span class="n">max</span><span class="p">:</span>
278            <span class="k">raise</span>
279        <span class="bp">self</span><span class="o">.</span><span class="n">band</span> <span class="o">=</span> <span class="n">band</span>
280         </div>
281<div class="viewcode-block" id="Neutron.set_intensity"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.set_intensity">[docs]</a>    <span class="k">def</span> <span class="nf">set_intensity</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">intensity</span><span class="o">=</span><span class="mi">368428</span><span class="p">):</span>
282        <span class="sd">&quot;&quot;&quot;</span>
283<span class="sd">        Sets the intensity in counts/sec</span>
284<span class="sd">        &quot;&quot;&quot;</span>
285        <span class="bp">self</span><span class="o">.</span><span class="n">intensity</span> <span class="o">=</span> <span class="n">intensity</span>
286        <span class="n">validate</span><span class="p">(</span><span class="n">intensity</span><span class="p">)</span>
287            </div>
288<div class="viewcode-block" id="Neutron.set_wavelength"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.set_wavelength">[docs]</a>    <span class="k">def</span> <span class="nf">set_wavelength</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">wavelength</span><span class="o">=</span><span class="n">_WAVE_LENGTH</span><span class="p">):</span>
289        <span class="sd">&quot;&quot;&quot;</span>
290<span class="sd">        Sets the wavelength</span>
291<span class="sd">        &quot;&quot;&quot;</span>
292        <span class="c"># check if the wavelength is in range</span>
293        <span class="k">if</span> <span class="n">wavelength</span> <span class="o">&lt;</span> <span class="nb">min</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">band</span><span class="p">)</span> <span class="ow">or</span>\
294                <span class="n">wavelength</span> <span class="o">&gt;</span> <span class="nb">max</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">band</span><span class="p">):</span>
295            <span class="k">raise</span>
296        <span class="bp">self</span><span class="o">.</span><span class="n">wavelength</span> <span class="o">=</span> <span class="n">wavelength</span>
297        <span class="n">validate</span><span class="p">(</span><span class="n">wavelength</span><span class="p">)</span>
298        <span class="bp">self</span><span class="o">.</span><span class="n">intensity</span> <span class="o">=</span> <span class="n">numpy</span><span class="o">.</span><span class="n">interp</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">wavelength</span><span class="p">,</span>
299                                  <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
300                                  <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span>
301                                  <span class="mf">0.0</span><span class="p">,</span>
302                                  <span class="mf">0.0</span><span class="p">)</span>
303</div>
304<div class="viewcode-block" id="Neutron.set_mass"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.set_mass">[docs]</a>    <span class="k">def</span> <span class="nf">set_mass</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">mass</span><span class="o">=</span><span class="n">_MASS</span><span class="p">):</span>
305        <span class="sd">&quot;&quot;&quot;</span>
306<span class="sd">        Sets the wavelength</span>
307<span class="sd">        &quot;&quot;&quot;</span>
308        <span class="bp">self</span><span class="o">.</span><span class="n">mass</span> <span class="o">=</span> <span class="n">mass</span>
309        <span class="n">validate</span><span class="p">(</span><span class="n">mass</span><span class="p">)</span>
310        </div>
311<div class="viewcode-block" id="Neutron.set_wavelength_spread"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.set_wavelength_spread">[docs]</a>    <span class="k">def</span> <span class="nf">set_wavelength_spread</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">spread</span><span class="o">=</span><span class="n">_WAVE_SPREAD</span><span class="p">):</span>
312        <span class="sd">&quot;&quot;&quot;</span>
313<span class="sd">        Sets the wavelength spread</span>
314<span class="sd">        &quot;&quot;&quot;</span>
315        <span class="bp">self</span><span class="o">.</span><span class="n">wavelength_spread</span> <span class="o">=</span> <span class="n">spread</span>
316        <span class="k">if</span> <span class="n">spread</span> <span class="o">!=</span> <span class="mf">0.0</span><span class="p">:</span>
317            <span class="n">validate</span><span class="p">(</span><span class="n">spread</span><span class="p">)</span>
318        </div>
319<div class="viewcode-block" id="Neutron.get_intensity"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.get_intensity">[docs]</a>    <span class="k">def</span> <span class="nf">get_intensity</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
320        <span class="sd">&quot;&quot;&quot;</span>
321<span class="sd">        To get the value of intensity</span>
322<span class="sd">        &quot;&quot;&quot;</span>
323        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">intensity</span>
324        </div>
325<div class="viewcode-block" id="Neutron.get_wavelength"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.get_wavelength">[docs]</a>    <span class="k">def</span> <span class="nf">get_wavelength</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
326        <span class="sd">&quot;&quot;&quot;</span>
327<span class="sd">        To get the value of wavelength</span>
328<span class="sd">        &quot;&quot;&quot;</span>
329        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">wavelength</span>
330</div>
331<div class="viewcode-block" id="Neutron.get_mass"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.get_mass">[docs]</a>    <span class="k">def</span> <span class="nf">get_mass</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
332        <span class="sd">&quot;&quot;&quot;</span>
333<span class="sd">        To get the neutron mass</span>
334<span class="sd">        &quot;&quot;&quot;</span>
335        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">mass</span>
336    </div>
337<div class="viewcode-block" id="Neutron.get_wavelength_spread"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.get_wavelength_spread">[docs]</a>    <span class="k">def</span> <span class="nf">get_wavelength_spread</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
338        <span class="sd">&quot;&quot;&quot;</span>
339<span class="sd">        To get the value of wavelength spread</span>
340<span class="sd">        &quot;&quot;&quot;</span>
341        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">wavelength_spread</span>
342    </div>
343<div class="viewcode-block" id="Neutron.get_ramdom_value"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.get_ramdom_value">[docs]</a>    <span class="k">def</span> <span class="nf">get_ramdom_value</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
344        <span class="sd">&quot;&quot;&quot;</span>
345<span class="sd">        To get the value of wave length</span>
346<span class="sd">        &quot;&quot;&quot;</span>
347        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">wavelength</span>
348            </div>
349<div class="viewcode-block" id="Neutron.get_spectrum"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.get_spectrum">[docs]</a>    <span class="k">def</span> <span class="nf">get_spectrum</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
350        <span class="sd">&quot;&quot;&quot;</span>
351<span class="sd">        To get the wavelength spectrum</span>
352<span class="sd">        &quot;&quot;&quot;</span>
353        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span>
354    </div>
355<div class="viewcode-block" id="Neutron.get_default_spectrum"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.get_default_spectrum">[docs]</a>    <span class="k">def</span> <span class="nf">get_default_spectrum</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
356        <span class="sd">&quot;&quot;&quot;</span>
357<span class="sd">        get default spectrum</span>
358<span class="sd">        &quot;&quot;&quot;</span>
359        <span class="k">return</span> <span class="n">numpy</span><span class="o">.</span><span class="n">array</span><span class="p">(</span><span class="n">_LAMBDA_ARRAY</span><span class="p">)</span>
360    </div>
361<div class="viewcode-block" id="Neutron.get_band"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.get_band">[docs]</a>    <span class="k">def</span> <span class="nf">get_band</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
362        <span class="sd">&quot;&quot;&quot;</span>
363<span class="sd">        To get the wavelength band</span>
364<span class="sd">        &quot;&quot;&quot;</span>
365        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">band</span>
366    </div>
367<div class="viewcode-block" id="Neutron.plot_spectrum"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.Neutron.plot_spectrum">[docs]</a>    <span class="k">def</span> <span class="nf">plot_spectrum</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
368        <span class="sd">&quot;&quot;&quot;</span>
369<span class="sd">        To plot the wavelength spactrum</span>
370<span class="sd">        : requirment: matplotlib.pyplot</span>
371<span class="sd">        &quot;&quot;&quot;</span>
372        <span class="k">try</span><span class="p">:</span>
373            <span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="kn">as</span> <span class="nn">plt</span>
374            <span class="n">plt</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">linewidth</span><span class="o">=</span><span class="mi">2</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s">&#39;r&#39;</span><span class="p">)</span>
375            <span class="n">plt</span><span class="o">.</span><span class="n">legend</span><span class="p">([</span><span class="s">&#39;Spectrum&#39;</span><span class="p">],</span> <span class="n">loc</span><span class="o">=</span><span class="s">&#39;best&#39;</span><span class="p">)</span>
376            <span class="n">plt</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
377        <span class="k">except</span><span class="p">:</span>
378            <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="s">&quot;Can&#39;t import matplotlib required to plot...&quot;</span>
379       
380    </div></div>
381<div class="viewcode-block" id="TOF"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.TOF">[docs]</a><span class="k">class</span> <span class="nc">TOF</span><span class="p">(</span><span class="n">Neutron</span><span class="p">):</span>
382    <span class="sd">&quot;&quot;&quot;</span>
383<span class="sd">    TOF: make list of wavelength and wave length spreads</span>
384<span class="sd">    &quot;&quot;&quot;</span>
385    <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
386        <span class="sd">&quot;&quot;&quot;</span>
387<span class="sd">        Init</span>
388<span class="sd">        &quot;&quot;&quot;</span>
389        <span class="n">Neutron</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
390        <span class="c">#self.switch = switch</span>
391        <span class="bp">self</span><span class="o">.</span><span class="n">wavelength_list</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">wavelength</span><span class="p">]</span>
392        <span class="bp">self</span><span class="o">.</span><span class="n">wavelength_spread_list</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">wavelength_spread</span><span class="p">]</span>
393        <span class="bp">self</span><span class="o">.</span><span class="n">intensity_list</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_intensity_list</span><span class="p">()</span>
394   
395<div class="viewcode-block" id="TOF.get_intensity_list"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.TOF.get_intensity_list">[docs]</a>    <span class="k">def</span> <span class="nf">get_intensity_list</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
396        <span class="sd">&quot;&quot;&quot;</span>
397<span class="sd">        get list of the intensity wrt wavelength_list</span>
398<span class="sd">        &quot;&quot;&quot;</span>
399        <span class="n">out</span> <span class="o">=</span> <span class="n">numpy</span><span class="o">.</span><span class="n">interp</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">wavelength_list</span><span class="p">,</span>
400                                      <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
401                                      <span class="bp">self</span><span class="o">.</span><span class="n">spectrum</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span>
402                                      <span class="mf">0.0</span><span class="p">,</span>
403                                      <span class="mf">0.0</span><span class="p">)</span>
404        <span class="k">return</span> <span class="n">out</span>
405    </div>
406<div class="viewcode-block" id="TOF.get_wave_list"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.TOF.get_wave_list">[docs]</a>    <span class="k">def</span> <span class="nf">get_wave_list</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
407        <span class="sd">&quot;&quot;&quot;</span>
408<span class="sd">        Get wavelength and wavelength_spread list</span>
409<span class="sd">        &quot;&quot;&quot;</span>
410        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">wavelength_list</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">wavelengthspread_list</span>
411    </div>
412<div class="viewcode-block" id="TOF.set_wave_list"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.TOF.set_wave_list">[docs]</a>    <span class="k">def</span> <span class="nf">set_wave_list</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">wavelength</span><span class="o">=</span><span class="p">[]):</span>
413        <span class="sd">&quot;&quot;&quot;</span>
414<span class="sd">        Set wavelength list</span>
415<span class="sd">        </span>
416<span class="sd">        :param wavelength: list of wavelengths</span>
417<span class="sd">        &quot;&quot;&quot;</span>
418        <span class="bp">self</span><span class="o">.</span><span class="n">wavelength_list</span> <span class="o">=</span> <span class="n">wavelength</span>
419        </div>
420<div class="viewcode-block" id="TOF.set_wave_spread_list"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.TOF.set_wave_spread_list">[docs]</a>    <span class="k">def</span> <span class="nf">set_wave_spread_list</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">wavelength_spread</span><span class="o">=</span><span class="p">[]):</span>
421        <span class="sd">&quot;&quot;&quot;</span>
422<span class="sd">        Set wavelength_spread list</span>
423<span class="sd">        </span>
424<span class="sd">        :param wavelength_spread: list of wavelength spreads</span>
425<span class="sd">        &quot;&quot;&quot;</span>
426        <span class="bp">self</span><span class="o">.</span><span class="n">wavelengthspread_list</span> <span class="o">=</span> <span class="n">wavelength_spread</span>
427       
428        </div></div>
429<div class="viewcode-block" id="validate"><a class="viewcode-back" href="../../../dev/api/sas.calculator.html#sas.calculator.instrument.validate">[docs]</a><span class="k">def</span> <span class="nf">validate</span><span class="p">(</span><span class="n">value</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
430    <span class="sd">&quot;&quot;&quot;</span>
431<span class="sd">    Check if the value is folat &gt; 0.0</span>
432<span class="sd">    </span>
433<span class="sd">    :return value: True / False</span>
434<span class="sd">    &quot;&quot;&quot;</span>
435    <span class="k">try</span><span class="p">:</span>
436        <span class="n">val</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
437        <span class="k">if</span> <span class="n">val</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">:</span>
438            <span class="n">val</span> <span class="o">=</span> <span class="bp">True</span>
439        <span class="k">else</span><span class="p">:</span>
440            <span class="n">val</span> <span class="o">=</span> <span class="bp">False</span>
441    <span class="k">except</span><span class="p">:</span>
442        <span class="n">val</span> <span class="o">=</span> <span class="bp">False</span></div>
443</pre></div>
444
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