Difference between revisions of "FCAL Reconstruction MIN BLOCK 04/24/2012"

From GlueXWiki
Jump to: navigation, search
(Created page with "==Single photon sample== File:SinglePhotonFCAL.recon eff.svn8951+svn9031.png File:SinglePhotonFCAL.sigma E err.svn8951+svn9031.png ==b1pi sample== EM beam background ON. ...")
 
(b1pi sample)
 
(3 intermediate revisions by the same user not shown)
Line 1: Line 1:
 +
svn rev 9031 comprised three related changes:
 +
* Change the default value of the MIN_CLUSTER_BLOCK_COUNT parameter from 2 to 1, allowing DFCALCluster objects to be formed from a single block FCAL hit.
 +
* Update non-linear energy correction coefficients for this change.
 +
* Add a loose timing cut (+-5 ns) at the DFCALShower stage to cut down on additional clusters from EM background that this change will cause.
 +
 
==Single photon sample==
 
==Single photon sample==
 +
* black points: svn 8951
 +
* <span style="color:red">red points: svn 9031</span>
 +
 
[[File:SinglePhotonFCAL.recon eff.svn8951+svn9031.png]]
 
[[File:SinglePhotonFCAL.recon eff.svn8951+svn9031.png]]
 +
 
[[File:SinglePhotonFCAL.sigma E err.svn8951+svn9031.png]]
 
[[File:SinglePhotonFCAL.sigma E err.svn8951+svn9031.png]]
 
==b1pi sample==
 
==b1pi sample==
EM beam background ON.
+
50,000 b1pi events. EM beam background ON.
[[File:PhotonEvsTheta thrown FCAL.png]]
+
 
 +
Thrown photons:
 +
 
 +
[[File:PhotonEvsTheta thrown FCAL Feb12.png]]
 +
 
 +
Reconstructed photons (after clusters matched to charged tracks have been rejected, but before any other cuts):
 +
 
 +
svn rev 8951:
 +
 
 
[[File:PhotonEvsTheta recon FCAL.svn8951.png]]
 
[[File:PhotonEvsTheta recon FCAL.svn8951.png]]
 +
 +
svn rev 9031:
 +
 
[[File:PhotonEvsTheta recon FCAL.svn9031.png]]
 
[[File:PhotonEvsTheta recon FCAL.svn9031.png]]
 +
 +
efficiency for unconverted photons
 +
 
[[File:Photon FCAL recon eff.svn8951+svn9031.png]]
 
[[File:Photon FCAL recon eff.svn8951+svn9031.png]]

Latest revision as of 21:56, 24 April 2012

svn rev 9031 comprised three related changes:

  • Change the default value of the MIN_CLUSTER_BLOCK_COUNT parameter from 2 to 1, allowing DFCALCluster objects to be formed from a single block FCAL hit.
  • Update non-linear energy correction coefficients for this change.
  • Add a loose timing cut (+-5 ns) at the DFCALShower stage to cut down on additional clusters from EM background that this change will cause.

Single photon sample

  • black points: svn 8951
  • red points: svn 9031

SinglePhotonFCAL.recon eff.svn8951+svn9031.png

SinglePhotonFCAL.sigma E err.svn8951+svn9031.png

b1pi sample

50,000 b1pi events. EM beam background ON.

Thrown photons:

PhotonEvsTheta thrown FCAL Feb12.png

Reconstructed photons (after clusters matched to charged tracks have been rejected, but before any other cuts):

svn rev 8951:

PhotonEvsTheta recon FCAL.svn8951.png

svn rev 9031:

PhotonEvsTheta recon FCAL.svn9031.png

efficiency for unconverted photons

Photon FCAL recon eff.svn8951+svn9031.png