Photon Reconstruction in b1pi events

FCAL

Thrown photons

Reconstructed photons

Good photons

These are the reconstructed photons whose angles match up with the thrown photons: $|\theta _{{recon}}-\theta _{{thrown}}|<0.2^{\circ }$ && $|\phi _{{recon}}-\phi _{{thrown}}|<3.5^{\circ }$.

~80% of photons in FCAL reconstructed.

BCAL

Thrown photons

Reconstructed photons

Good photons

These are the reconstructed photons whose angles match up with the thrown photons: $|\theta _{{recon}}-\theta _{{thrown}}|<5^{\circ }$ && $|\phi _{{recon}}-\phi _{{thrown}}|<4^{\circ }$.

~65% of BCAL photons reconstructed, energy systematically underestimated.