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| Re: mvd classes [message #4590 is a reply to message #4587] |
Fri, 29 June 2007 11:06   |
Ralf Kliemt
Messages: 507
Registered: May 2007
Location: GSI, Darmstadt
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first-grade participant |
From: 141.30.85*
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| Quote: |
In the Hybrid hitProducer when you ask for GetlocalHitPoint transformation , how will be the coordinates system of
the silicon sensor defined? Is the same as the global frame?
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GetLocalHitPoints(point, posInL, posOutL);
Takes the MvdPoint point (global frame) and converts the in and out points to the local sensor frame (written to posInL and posOutL).
| Quote: |
in The CalcGlobalPoint(..) method,
what is thedifference between the col and colB?
are they both the variable for the clumn number?
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The CalcGlobalPoint Methyod is a MC-Clustering. It will go outside the Digitization. As far as I know this should not be called in the Exec Of the HybridHitProducer. The col is the column number, which becomes a charge-weighted mean for this cluster. The colB is the non-weighted mean.
| Quote: |
why do you do col += 0.5, what is the meaning of this 0.5?
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I think Tobias made this, because the column numbers are integers of the pixel borders. The output value is just shifted into the middle of the pixel.
I hope this helps.
Regards, Ralf.
[Updated on: Fri, 29 June 2007 11:07] Report message to a moderator |
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