CodyMilne G4Proj

From New IAC Wiki
Revision as of 22:09, 17 February 2016 by Hilltony (talk | contribs) (→‎10 eV)
Jump to navigation Jump to search

Photon Energy deposition in a pure Ge crystal

Here are is the mass attenuation cross sections for Germanium --- Massattenuation.gif

Determine the deposition of photons ranging in energy from 10 eV to 3 MeV in a pure Germanium crystal assuming an infinite block.

Attenuation coefficient about 1/5.323 cm = 0.19 cm or about 2 mm to maybe 2 cm?

Create file containing Photon Energy, ProcessID, step #, Energy Lost, Position for each step a photon takes through the Germanium crystal.


Date Time
1/26/16 1 hour
1/27/16 1 hour
1/29/16 1 hour
2/4/16 1 hour
2/5/16 3 hour
2/8/16 2 hour
2/9/16 2 hour
2/10/16 1 hour
2/11/16 2 hour
2/14/16 2 hour
2/16/16 2.5 hour

Results of energy loss in Germanium

Why do SN>1 photons loose energy at Z = -9000?

10 eV

1-D plot of events for each step as function of Z

1-D plot of the energy deposited for each step as function of Z

200 px

100 eV

ratio of photoelectric cross section to compton scattering is ~4

Start with[math] E_{gamma}[/math] = 100 eV


200 px

1 keV

Start with[math] E_{gamma}[/math] = 1 keV


200 px 200 px

10 keV

Start with[math] E_{gamma}[/math] = 10 keV

CM 10keVeLoss 2-7-2016.png 200 px

100 keV

Start with[math] E_{gamma}[/math] = 100 keV


CM 100keVeLoss 2-7-2016.png

CM 100keVPOSZvsEVENTSNORM 2-14-2016.png

500 keV

Start with[math] E_{gamma}[/math] = 500 keV

Change units on Y-axis to Energy (eV?)

"No Backscattering" Do another plot with momentum cut Pz>0

Add 9000 to Z-position to start Ge barrier at zero

CM 500keVPOSZvsEVENTS 2-7-2016.png

CM 500keVPOSZvsEVENTScut 2-7-2016.png

CM 500keVPOSZvsEVENTSNORM 2-14-2016.png

CM 500keVPOSZvsPOSXColz 2-14-2016.gif

CM 500keVeLoss 2-7-2016.png

1 MeV

Start with[math] E_{gamma}[/math] = 1 MeV


CM 1MeVeLoss 2-7-2016.png

CM 1MeVPOSZvsEVENTSNORM 2-14-2016.png

3 MeV

Start with[math] E_{gamma}[/math] = 3 MeV


CM 13MeVeLoss 2-8-2016.png CM 3MeVPOSZvsEVENTSNORM 2-14-2016.png

Runing Types

nohup ../exampleN02 run1.mac > /dev/null &


Divide canvas into 2 x 5


User_talk:Foretony#CodyMilne_G4Proj