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import unittest
import itertools
from chroma import generator
from chroma.generator.vertex import constant_particle_gun
from chroma.demo.optics import water
class TestG4ParallelGenerator(unittest.TestCase):
def test_center(self):
'''Generate Cherenkov light at the center of the world volume'''
gen = generator.photon.G4ParallelGenerator(1, water)
vertex = itertools.islice(constant_particle_gun('e-', (0,0,0), (1,0,0), 100), 10)
for event in gen.generate_events(vertex):
self.assertGreater(len(event.photons_beg.pos), 0)
def test_off_center(self):
'''Generate Cherenkov light at (1 m, 0 m, 0 m)'''
gen = generator.photon.G4ParallelGenerator(1, water)
vertex = itertools.islice(constant_particle_gun('e-', (1000,0,0), (1,0,0), 100), 10)
for event in gen.generate_events(vertex):
self.assertGreater(len(event.photons_beg.pos), 0)
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