sPHENIX discussion of software

[pinkenburg <pinkenburg AT bnl.gov>]

Hi folks,

for some long forgotten reason the default in our simulations is to run 
with a constant 1.5T solenoidal field. In our macros we always use the 
fieldmap so we typically do not see this. But this forces us in our 
prototype simulations to explicitly turn the field off (which we do in 
the standard macros).

I keep on shooting myself in the foot with this (why do the charged 
geantino tracks corkscrew outside of my dipole????) and for new users 
this is counter intuitive to say the least.

I would like to change our default to "field off" rather than 1.5T 
solenoidal field (again if there is no fieldmap loaded - the behavior 
using our standard macros is not affected). Since this change breaks 
with the past - now is the chance to speak up if you rely on this (again 
in your macro you can set the field to any value if this is needed).

Comments?

Chris

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Christopher H. Pinkenburg       ;    pinkenburg AT bnl.gov
                                ;    http://www.phenix.bnl.gov/~pinkenbu

Brookhaven National Laboratory  ;    phone: (631) 344-5692
Physics Department Bldg 510 C   ;    fax:   (631) 344-3253
Upton, NY 11973-5000

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