Monoenergetic proton pencil beam
From UCL HEP PBT Wiki
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/protonPB/det/setSizeX 4 cm | /protonPB/det/setSizeX 4 cm | ||
/protonPB/det/setSizeYZ 4 cm | /protonPB/det/setSizeYZ 4 cm | ||
| - | /protonPB/det/setSliceSizeYZ | + | /protonPB/det/setSliceSizeYZ 4 cm |
| - | /protonPB/det/sliceNumber | + | /protonPB/det/sliceNumber 50 |
# | # | ||
# define longitudinal scoring mesh | # define longitudinal scoring mesh | ||
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/score/create/boxMesh waterMeshlongitudinal | /score/create/boxMesh waterMeshlongitudinal | ||
/score/mesh/boxSize 2. 2. 2. cm | /score/mesh/boxSize 2. 2. 2. cm | ||
| - | /score/mesh/nBin | + | /score/mesh/nBin 50 1 1 |
/score/mesh/translate/xyz 0. 0. 0. cm | /score/mesh/translate/xyz 0. 0. 0. cm | ||
/score/quantity/energyDeposit energyDeposit | /score/quantity/energyDeposit energyDeposit | ||
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# centered at the Bragg peak | # centered at the Bragg peak | ||
/score/create/boxMesh waterMeshlateral | /score/create/boxMesh waterMeshlateral | ||
| - | /score/mesh/boxSize | + | /score/mesh/boxSize 0.1 2. 2. cm |
| - | /score/mesh/nBin 1 | + | /score/mesh/nBin 1 1 50 |
/score/mesh/translate/xyz 1.2 0. 0. cm | /score/mesh/translate/xyz 1.2 0. 0. cm | ||
/score/quantity/energyDeposit energyDeposit | /score/quantity/energyDeposit energyDeposit | ||
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# initialize | # initialize | ||
/run/initialize | /run/initialize | ||
| + | # | ||
| + | # visualisation | ||
| + | #/control/execute visualisation.mac | ||
# | # | ||
/gun/particle proton | /gun/particle proton | ||
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# number of events | # number of events | ||
/run/beamOn 6000 | /run/beamOn 6000 | ||
| + | # | ||
| + | # drawing projections | ||
| + | #/score/drawProjection waterMeshlongitudinal doseDeposit | ||
| + | #/score/drawProjection waterMeshlateral doseDeposit | ||
| + | # | ||
# dump scores to a file | # dump scores to a file | ||
/score/dumpQuantityToFile waterMeshlongitudinal doseDeposit DoseLongitudinalMesh.txt | /score/dumpQuantityToFile waterMeshlongitudinal doseDeposit DoseLongitudinalMesh.txt | ||
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'''Change the number of slices''' | '''Change the number of slices''' | ||
| - | You can change the number of slices. The default number is | + | You can change the number of slices. The default number is 50. Keep in mind that |
if you want to increase the number of slices you need to modify the file DetectorConstruction.hh in | if you want to increase the number of slices you need to modify the file DetectorConstruction.hh in | ||
/ProtonPB_source/include/. | /ProtonPB_source/include/. | ||
| - | In DetectorConstruction.hh set MaxLayer to value bigger than the number of your slices. The default value is MaxLayer= | + | In DetectorConstruction.hh set MaxLayer to value bigger than the number of your slices. The default value is MaxLayer=60. For example, if you want to have 55 slices you do not need to modify MaxLayer. Then, only in proton.mac change the number of slices |
<pre style="color: #800000; background-color: #dcdcdc"> | <pre style="color: #800000; background-color: #dcdcdc"> | ||
| - | /protonPB/det/sliceNumber | + | /protonPB/det/sliceNumber 55 |
</pre> | </pre> | ||
'''Modify the mesh''' | '''Modify the mesh''' | ||
| - | You can change the size of the mesh and the number of voxels by modifying | + | You can change the size of the mesh (longitudinal and lateral) and the number of voxels by modifying their corresponding lines |
<pre style="color: #800000; background-color: #dcdcdc"> | <pre style="color: #800000; background-color: #dcdcdc"> | ||
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=== <span style="color:#000080"> Visualisation </span> === | === <span style="color:#000080"> Visualisation </span> === | ||
| - | + | If you want to use visualisation, in macro '''proton.mac''' uncomment the line '''/control/execute visualisation.mac'''. This will run macro '''visualisation.mac''' with a specific visualisation settup. | |
| + | If you uncomment the lines '''/score/drawProjection waterMeshlongitudinal doseDeposit''' and '''/score/drawProjection waterMeshlateral doseDeposit''' you will draw the dose projections. In this example, we use the '''DAWN''' event display. Before running the visualisation | ||
| + | have a look at this [http://geant4.slac.stanford.edu/Presentations/vis/G4DAWNTutorial/G4DAWNTutorial.html DAWN tutorial]. | ||
| + | |||
| + | To run the visualisation, first uncomment lines '''/control/execute visualisation.mac''' and '''/score/drawProjection waterMeshlongitudinal doseDeposit'''. Then, run the proton.mac | ||
| + | |||
| + | <pre style="color: #800000; background-color: #dcdcdc"> | ||
| + | ./protonPB proton.mac | ||
| + | </pre> | ||
| + | |||
| + | In addition to the text files it will create two .prim files, g4_00.prim and g4_01.prim. The first one with geometry and particle interactions and the second with dose projections. While running the proton.mac it will ask you to open g4_00.prim in DAWN. In the opened window press OK. This will create your first visualisation: | ||
| + | |||
| + | http://www.hep.ucl.ac.uk/pbt/RadiotherapyWorkbook/skins/common/images/ProtonPB/g4_00_6000e.eps | ||
| + | |||
| + | The second file g4_01.prim will not open automatically. Open it in the following way: | ||
| + | |||
| + | <pre style="color: #800000; background-color: #dcdcdc"> | ||
| + | dawn g4_01.prim | ||
| + | </pre> | ||
| + | |||
| + | In the opened window press OK and this will create the image: | ||
| + | |||
| + | http://www.hep.ucl.ac.uk/pbt/RadiotherapyWorkbook/skins/common/images/ProtonPB/g4_02_6000e.eps | ||
| + | |||
| + | You can modify the .prim files in DAWN. For example, change the polar and azimuthal angles: (polar angle, azimuthal angle) = (0,90) will create this image | ||
| + | |||
| + | http://www.hep.ucl.ac.uk/pbt/RadiotherapyWorkbook/skins/common/images/ProtonPB/g4_01_6000e.eps | ||
| + | |||
| + | (polar angle, azimuthal angle) = (90,0) will create this image | ||
| + | |||
| + | http://www.hep.ucl.ac.uk/pbt/RadiotherapyWorkbook/skins/common/images/ProtonPB/g4_04_6000e.eps | ||
| + | |||
| + | Now, in proton.mac macro uncomment '''/score/drawProjection waterMeshlateral doseDeposit''' and comment '''/score/drawProjection waterMeshlongitudinal doseDeposit'''. Run the proton.mac with the new settings. The file with the lateral dose projections will look like that: | ||
| + | |||
| + | http://www.hep.ucl.ac.uk/pbt/RadiotherapyWorkbook/skins/common/images/ProtonPB/g4_03_6000e.eps | ||
== <span style="color:#000080"> Data from The Clatterbridge Cancer Centre </span> == | == <span style="color:#000080"> Data from The Clatterbridge Cancer Centre </span> == | ||
