Difference between revisions of "Aluminum Thickness Tests"
| Line 64: | Line 64: | ||
=Photon Physics On= | =Photon Physics On= | ||
| − | Varying Aluminum beamstop thickness | + | :Varying Aluminum beamstop thickness |
| − | Tantalum thickness of 0.0508cm | + | :Tantalum thickness of 0.0508cm |
| − | All electron physics turned on | + | :All electron physics turned on |
| − | All photon physics turned on | + | :All photon physics turned on |
| − | Chamber and Tracker matter is vacuum | + | :Chamber and Tracker matter is vacuum |
| − | 1 Radiation Length of Aluminum is 8.897cm | + | :1 Radiation Length of Aluminum is 8.897cm |
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Revision as of 17:55, 17 October 2017
No Photon Physics
Varying Aluminum beamstop thickness
Tantalum thickness of 0.0508cm
All electron physics turned on
No photon physics turned on
Chamber and Tracker matter is vacuum
1 Radiation Length of Aluminum is 8.897cm
| Aluminum Thickness | Photon Kinetic Energy Spectrum | Z Position of Photon Creation | Volume of Photon Creation |
| 8.897cm |  |
 |
|
| 1.5875cm (5/8") |  |
 |
|
| 1.27cm (1/2") |  |
 |
|
| 4.4485cm |  |
 |
|
| 2.22425cm |  |
 |
|
Note: Volume 1 = Target, Volume 2 = Beamstop, Volume 3 = Tracker, Volume 4 = Chamber, Volume 5 = else
Conclusion
Without photon physics active and vacuum in the tracker and chamber, I cannot say whether electrons are making it though the target and beamstop.
Where are photons below 300 keV from?
- As seen in this image, if I remove the Aluminum beamstop, the <300KeV photon peak disappears. This leads me to believe that the it was electrons/photons interacting in the aluminum to create the lower energy photons.
Photon Physics On
- Varying Aluminum beamstop thickness
- Tantalum thickness of 0.0508cm
- All electron physics turned on
- All photon physics turned on
- Chamber and Tracker matter is vacuum
- 1 Radiation Length of Aluminum is 8.897cm
| Aluminum Thickness | Photon Kinetic Energy Spectrum | Z Position of Photon Creation | Volume of Photon Creation |
| 8.897cm |  |
  |
|
| 1.5875cm (5/8") |  |
  |
200px |
| 1.27cm (1/2") |  |
  |
|
| 4.4485cm |  |
  |
|
| 2.22425cm |  |
  |
200px |
Note: Volume 1 = Target, Volume 2 = Beamstop, Volume 3 = Tracker, Volume 4 = Chamber, Volume 5 = else
Conclusion
Why is tail 16 cm long?
I am going to rerun the 1 rad length simulation to see if i get the same result which will help me determine if i had an error in which matter i used in tracker/chamber, etc.
Photon Physics On with Air in Chamber and Tracker
Varying Aluminum beamstop thickness
Tantalum thickness of 0.0508cm
All electron physics turned on
All photon physics turned on
Chamber and Tracker matter is air (70% Nitrogen, 30% Oxygen)
1 Radiation Length of Aluminum is 8.897cm
| Aluminum Thickness | Photon Kinetic Energy Spectrum | Z Position of Photon Creation | Volume of Photon Creation |
| 8.897cm | 200px | 200px | 200px |
| 1.5875cm (5/8") | 200px | 200px | 200px |
| 1.27cm (1/2") | 200px | 200px | 200px |
| 4.4485cm | 200px | 200px | 200px |
| 2.22425cm | 200px | 200px | 200px |
Note: Volume 1 = Target, Volume 2 = Beamstop, Volume 3 = Tracker, Volume 4 = Chamber, Volume 5 = else