RICH PID

From: Ian Bearden (bearden@nbi.dk)
Date: Fri Oct 12 2001 - 11:43:01 EDT

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Hej Claus,
I have been looking a bit at the RICH to help understand the momentum
problems.
When you plot Radius vs. momentum, is the momentum from D4, or is it the
average of D3 and D4 momenta? I ask because if I scale
the D4 momentum up by 10% (so that it matches the D2 momentum), I get a
pretty nice agreement between the data and the 'theoretical_pi.' How did you
determine the index of refraction, which is set to 1.002 in the software I
stole from you.

Also, the software is really nice.  Thanks!

Ian

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