[Camino-users] Membrane crossing error in datasynth

[Romascano David]

Dear all,

I'd like to run some simulations with 500'000 spins in a 90° crossing of impermeable fibers substrate, but keep running into membrane crossing errors.

The error message is the following :

SEVERE: erroneously detected membrane crossing in diffusion sim!
distance to membrane 1.9630181029853806E-7 is greater than step length 1.9630180844811389E-7 d[0]= 1.2500000012500001E-5 distToPlane= 1.7132384961302227E-7 cosTheta= 0.872757359458229 t=0.023420352 walker 491235
Exception in thread "main" java.lang.RuntimeException: erroneously detected membrane crossing in diffusion sim!
distance to membrane 1.9630181029853806E-7 is greater than step length 1.9630180844811389E-7 d[0]= 1.2500000012500001E-5 distToPlane= 1.7132384961302227E-7 cosTheta= 0.872757359458229 t=0.023420352 walker 491235
	at simulation.dynamics.ElasticReflector.amendStep(ElasticReflector.java:136)
	at simulation.geometry.substrates.Substrate.amend(Substrate.java:391)
	at simulation.dynamics.Walker.update(Walker.java:264)
	at simulation.DiffusionSimulation.runMainLoop(DiffusionSimulation.java:589)
	at simulation.DiffusionSimulation.nextVoxel(DiffusionSimulation.java:702)
	at apps.SyntheticData.execute(SyntheticData.java:74)
	at apps.EntryPoint.main(EntryPoint.java:284)

I'm using a tmax of 5'000 for a dynamic duration of 0.05352 seconds and a diffusivity of 0.6e-9.

Does any one knows how to avoid such errors ?

Best regards,
David Romascano