KEK test-beam analysis update
Light yields for pions and protons
H. Sakamoto / M. Yoshida
Feb.01 2006
MICE VC
Photo electron distribution –DATA—
Timing(L1A)
Residual
RUN#1255
STATION1
X-VIEW
cm
L1A cut
L1A & residue
cut
Photo electron distribution
– MC/DATA-DATA
Calibrated by eye (w/o fit)
MC
Distributed by
Poisson
Deposit
energy
MC
DATA
P.E. distribution
Station A
Hits on reconstructed track
V-view
X-view
PROTON
14.5 p.e.
W-view
PROTON
16.9 p.e.
PROTON
15.9 p.e.
BLUE: PION
RED:PROTON
RUN#1224-1228
1.0 GeV/c positive beam
No solenoid magnetic field
P.E. distribution
Station DVIEW W
Hits on reconstructed track
VIEW V
VIEW X
PROTON
PROTON
9.2 p.e.
9.0 p.e.
PROTON
9.3 p.e.
RUN#1224-1228
1.0 GeV/c positive beam
No solenoid magnetic field
Summary
• The simulation of photo-electron distribution is
well agree with data with gate timing cut and
tracking.
• PID work well to distinguish particle spieces
– Proton data shows reasonably higher light yields in
fiber
• Both pion and proton data indicate photon loss
on Station D.
• Investigating hardware carefully.