Just increase in the limit at the very end of the config/UserPhysicsOptions.xml .
I do not think that the simulation quality deteriorates very fast in high energies.
Results at ~2 TeV should be sensible. But, I've never run the simulation at 2 TeV.
Let me know if there are problems.
You don't have to use the --enable-vhe-extension. This is experimental and,
currently, it just adds a Glashow resonance generator (PeV scales).
This option should (but it currently doesn't) adjust the DIS generator for use in higher-energies
(use a lower minimum Bjorken x cutoff value, use a PDF set other than the Bodek-Yang which is tuned
to high-x low-Q2 data, switch-on the propagator term in the DIS cross section etc... ).
Also if you are running GENIE at 2 TeV then (for reasons of computational efficiency)
you may want to disable all modes other than DIS.
Best,
Costas
On 8 Jun 2011, at 22:13, Tom Roberts wrote:
> I want to investigate neutrino backgrounds from a muon collider, so I need neutrino energies up to about 2 TeV.
>
> What is the status of Genie's very high energy extension? How do I use it?
>
> In my .configure command I included --enable-vhe-extension. But in gmkspl when I try to go above 300 GeV it says "Refusing to exceed validity range: Emax = 300".
>
> As I am investigating backgrounds, I am primarily concerned with the total cross-section, and not the details of the secondaries (as long as they are not crazy). I realize there are no experimental data at such high energies, and there are theoretical uncertainties.
>
> Is there anything simple I can do that will give results up to 2 TeV that aren't crazy (even if they are not known to be accurate)?
>
>
> Tom Roberts
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