MCNP Monte Carlo NCD Properties bank

             NCD additions (not yet implemented) 

                         Titles:  MCNP Monte Carlo NCD Properties bank
                         =============================================
 
Contact:  D. Wark, Oxford.
 
 
Revision History:-
================

5.00    D. Wark     First version 


 
Titles Files
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To be defined.
 
 
Verification
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Description
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This bank holds the description of the NCD detector properties relevant to 
the simulation (should all this stuff go in a single bank?) of the charge
deposit and drift and the current production.  There is one MCNP bank.   


Data Words
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        Fixed length Database Header.  See titles_dbhdr.html
 
Line Type Variable      [symbolic command]  Description
---- ---- --------      -------------------------------

Dave Wark:
this holds things like the effective ionisation potential, drift
speeds, etc.  I could use help getting a complete list of what is
needed.

Hamish Robertson:
I need to try to catch up here, so please bear with me.  In this,
when you refer to "counter", do you mean what we call a "string", ie.
all the counters connected to a single cable and preamp?

If you mean only "counter", the object that is 2, 2.5, or 3 m long,
then the things that are distinctive for MC at that level are

 1.  Length
 2.  Gain
 3.  Tritium content (it's a background that modulates the
baseline, but we should probably ignore this one until we seem some
evidence we need it.)
 4.  Alpha rate or something like that. (probably not relevant
to simulation of events from anything but alphas, but it is
nevertheless a counter property.)
 5.  z, or some location index, for the counter

If you mean "string" then in addition we have
 5.  3He or 4He
 6.  (x,y) or string ID
 7.  HV
 8.  z-position of event
 9.  Electronics constants: Gain, low-f cutoff, hi-f cutoff,
noise level, 3 or 4 logamp constants, channel ID, probably a few
more...
 10.  Then there are the ones in your message, some of which I
can't recognize.   Is NCD current the dynamic, ns-by-ns ionization
pulse profile, or is it DC?  What is NCD signal (how big an array is
it, and what does it represent)? Track penetration may refer to
tracks that cross the NCD - water boundary?  Track ionization as
described seems clear enough, although I am not sure at what scale we
have to subdivide the tracks.