VMC open issues

Hi everybody,

It seems we have enough issues for a first meeting:

1. Using GEANE in CBM track reconstruction algorithms - presentation by Andrey Lebedev
2. Open issues to be discussed/followed. We will discuss at the first meeting who will be responsible for following-up each item

1 - Assemblies:
In Geant4 they have no Id but in ROOT they have, this has consequences to the geometry tree, i.e: If one try to relay on the mother-daughter relation the code will differ between the different navigations (ROOT and G4Native) is it possible to have a unified concept? Why do they have an Id in ROOT? Sometimes they are even seen in the simulation, something which should never happened.

2. In TGeant3.cxx there is many particles and decay modes that are hard coded there! If one try to define his own particles and decay modes it could conflict, and I already runs into problems and get very strange results before finding out that some things are hard coded.

3. Cerenkov total reflection:
it is not working properly with GeoManager, when comparing with G4Native, it is working as expected (the same geometry is converted to Native G4 via VGM)

4. Geane-VMC:

Eustep.F has to be re-written in C++ to have more control on the stepping behavior of Geane

5. "Proposed step is 0" issue in FLUKA VMC - In some condition there are some slow electrons (P ~= 500 KeV) that try to do very short step (~ 1.e-20 cm) so simulation code cannot go on. - reported by Vito in the context of ILCroot

I would propose next Monday at 10:00 - room to be confirmed. Please let me know your proposal if this one clashes with your schedule. Let me know anyway your intended attendance. I will book a room with EVO so that people remote can participate.

Best,
Andrei Received on Mon Sep 15 2008 - 08:32:45 CEST