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Forum: Space Applications
Re: None SPE Primary Particles (Steven Avery)
Date: 21 Apr, 2008
From: Giovanni Santin <Giovanni Santin>

Dear Steven

A few suggestion:

I would recommend to use the General Particle Source (GPS) to generate your particle spectra. It's fairly simple to use, you can find a link to its detailed documentation from

Regarding SPE spectra, it depends if you want to simulate individual solar events or the total proton fluence in a certain mission period.

For the latter, for example, you can get the total fluence predicted by the ESP model through the SPENVIS interface: After you have registered (it's open and free) you look at the MULASSIS module. At the end of the user input process, you can get directly a Geant4 macro with the spectrum in GPS format.

[If you prefer to stay with the PrimaryGenerator from the radioprotection examples, you can get the ESP differential spectra from SPENVIS anyway. But I would recommend the GPS because of the many features it offers]

Please have a look as well at the 2 PPTs on "Primary particle" at

Don't hesitate to contact me for further details

Best regards


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