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Re: Modifications in Kalman [message #14514 is a reply to message #14513] Tue, 19 March 2013 13:52 Go to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *to.infn.it
Hi,
I checked the differences for momentum recosntructions, using 10k muons at 0.5 GeV/c in the barrel.

This the comparison w/ (blue) and w/o (red) backward propagation to the IP:

index.php?t=getfile&id=7305&private=0

This the comparison with the standard initial plabe (blue) and with the perpendicular plane (red)

index.php?t=getfile&id=7306&private=0

It appears evident that the orientation of the plane does not affect teh results, while w/o back propagation the counts are less. The latter point is not well understood by me.
  • Attachment: res_ip.gif
    (Size: 7.23KB, Downloaded 397 times)
  • Attachment: res_perp.gif
    (Size: 7.19KB, Downloaded 412 times)
 
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