Signal separation from background

Characteristics difference of a single muon and a muon bundle was investigated in ordert to separate signals from backgrounds.

NPE lateral distribution for each OM

Energy dependence

JULIeT, 10^5 GeV	JULIeT, 10^6 GeV	JULIeT, 10^7 GeV	JULIeT, 10^8 GeV
CORSIKA, 10^5 GeV	CORSIKA, 10^6 GeV	CORSIKA, 10^7 GeV	CORSIKA, 10^8 GeV
10^5 GeV, red: JULIeT, blue: CORSIKA	10^6 GeV, red: JULIeT, blue: CORSIKA	10^7 GeV, red: JULIeT, blue: CORSIKA	10^8 GeV, red: JULIeT, blue: CORSIKA

NPE longitudinal distribution for each OM (ATWD)

10^5 GeV

JULIeT, 0. < cos(zenith angle) < 0.2	JULIeT, 0.2 < cos(zenith angle) < 0.4	JULIeT, 0.4 < cos(zenith angle) < 0.6	JULIeT, 0.6 < cos(zenith angle) < 0.8	JULIeT, 0.8 < cos(zenith angle) < 1.
CORSIKA, 0. < cos(zenith angle) < 0.2	CORSIKA, 0.2 < cos(zenith angle) < 0.4	CORSIKA, 0.4 < cos(zenith angle) < 0.6	CORSIKA, 0.6 < cos(zenith angle) < 0.8	CORSIKA, 0.8 < cos(zenith angle) < 1.
0. < cos(zenith angle) < 0.2	0.2 < cos(zenith angle) < 0.4	0.4 < cos(zenith angle) < 0.6	0.6 < cos(zenith angle) < 0.8	0.8 < cos(zenith angle) < 1.

10^6 GeV

JULIeT, 0. < cos(zenith angle) < 0.2	JULIeT, 0.2 < cos(zenith angle) < 0.4	JULIeT, 0.4 < cos(zenith angle) < 0.6	JULIeT, 0.6 < cos(zenith angle) < 0.8	JULIeT, 0.8 < cos(zenith angle) < 1.
CORSIKA, 0. < cos(zenith angle) < 0.2	CORSIKA, 0.2 < cos(zenith angle) < 0.4	CORSIKA, 0.4 < cos(zenith angle) < 0.6	CORSIKA, 0.6 < cos(zenith angle) < 0.8	CORSIKA, 0.8 < cos(zenith angle) < 1.
0. < cos(zenith angle) < 0.2	0.2 < cos(zenith angle) < 0.4	0.4 < cos(zenith angle) < 0.6	0.6 < cos(zenith angle) < 0.8	0.8 < cos(zenith angle) < 1.

10^7 GeV

JULIeT, 0. < cos(zenith angle) < 0.2	JULIeT, 0.2 < cos(zenith angle) < 0.4	JULIeT, 0.4 < cos(zenith angle) < 0.6	JULIeT, 0.6 < cos(zenith angle) < 0.8	JULIeT, 0.8 < cos(zenith angle) < 1.
CORSIKA, 0. < cos(zenith angle) < 0.2	CORSIKA, 0.2 < cos(zenith angle) < 0.4	CORSIKA, 0.4 < cos(zenith angle) < 0.6	CORSIKA, 0.6 < cos(zenith angle) < 0.8	CORSIKA, 0.8 < cos(zenith angle) < 1.
0. < cos(zenith angle) < 0.2	0.2 < cos(zenith angle) < 0.4	0.4 < cos(zenith angle) < 0.6	0.6 < cos(zenith angle) < 0.8	0.8 < cos(zenith angle) < 1.

10^8 GeV

JULIeT, 0. < cos(zenith angle) < 0.2	JULIeT, 0.2 < cos(zenith angle) < 0.4	JULIeT, 0.4 < cos(zenith angle) < 0.6	JULIeT, 0.6 < cos(zenith angle) < 0.8	JULIeT, 0.8 < cos(zenith angle) < 1.
CORSIKA, 0. < cos(zenith angle) < 0.2	CORSIKA, 0.2 < cos(zenith angle) < 0.4	CORSIKA, 0.4 < cos(zenith angle) < 0.6	CORSIKA, 0.6 < cos(zenith angle) < 0.8	CORSIKA, 0.8 < cos(zenith angle) < 1.
0. < cos(zenith angle) < 0.2	0.2 < cos(zenith angle) < 0.4	0.4 < cos(zenith angle) < 0.6	0.6 < cos(zenith angle) < 0.8	0.8 < cos(zenith angle) < 1.

NPE longitudinal distribution for each OM (FADC)

10^5 GeV

JULIeT, 0. < cos(zenith angle) < 0.2	JULIeT, 0.2 < cos(zenith angle) < 0.4	JULIeT, 0.4 < cos(zenith angle) < 0.6	JULIeT, 0.6 < cos(zenith angle) < 0.8	JULIeT, 0.8 < cos(zenith angle) < 1.
CORSIKA, 0. < cos(zenith angle) < 0.2	CORSIKA, 0.2 < cos(zenith angle) < 0.4	CORSIKA, 0.4 < cos(zenith angle) < 0.6	CORSIKA, 0.6 < cos(zenith angle) < 0.8	CORSIKA, 0.8 < cos(zenith angle) < 1.
0. < cos(zenith angle) < 0.2	0.2 < cos(zenith angle) < 0.4	0.4 < cos(zenith angle) < 0.6	0.6 < cos(zenith angle) < 0.8	0.8 < cos(zenith angle) < 1.

10^6 GeV

JULIeT, 0. < cos(zenith angle) < 0.2	JULIeT, 0.2 < cos(zenith angle) < 0.4	JULIeT, 0.4 < cos(zenith angle) < 0.6	JULIeT, 0.6 < cos(zenith angle) < 0.8	JULIeT, 0.8 < cos(zenith angle) < 1.
CORSIKA, 0. < cos(zenith angle) < 0.2	CORSIKA, 0.2 < cos(zenith angle) < 0.4	CORSIKA, 0.4 < cos(zenith angle) < 0.6	CORSIKA, 0.6 < cos(zenith angle) < 0.8	CORSIKA, 0.8 < cos(zenith angle) < 1.
0. < cos(zenith angle) < 0.2	0.2 < cos(zenith angle) < 0.4	0.4 < cos(zenith angle) < 0.6	0.6 < cos(zenith angle) < 0.8	0.8 < cos(zenith angle) < 1.

10^7 GeV

JULIeT, 0. < cos(zenith angle) < 0.2	JULIeT, 0.2 < cos(zenith angle) < 0.4	JULIeT, 0.4 < cos(zenith angle) < 0.6	JULIeT, 0.6 < cos(zenith angle) < 0.8	JULIeT, 0.8 < cos(zenith angle) < 1.
CORSIKA, 0. < cos(zenith angle) < 0.2	CORSIKA, 0.2 < cos(zenith angle) < 0.4	CORSIKA, 0.4 < cos(zenith angle) < 0.6	CORSIKA, 0.6 < cos(zenith angle) < 0.8	CORSIKA, 0.8 < cos(zenith angle) < 1.
0. < cos(zenith angle) < 0.2	0.2 < cos(zenith angle) < 0.4	0.4 < cos(zenith angle) < 0.6	0.6 < cos(zenith angle) < 0.8	0.8 < cos(zenith angle) < 1.

10^8 GeV

JULIeT, 0. < cos(zenith angle) < 0.2	JULIeT, 0.2 < cos(zenith angle) < 0.4	JULIeT, 0.4 < cos(zenith angle) < 0.6	JULIeT, 0.6 < cos(zenith angle) < 0.8	JULIeT, 0.8 < cos(zenith angle) < 1.
CORSIKA, 0. < cos(zenith angle) < 0.2	CORSIKA, 0.2 < cos(zenith angle) < 0.4	CORSIKA, 0.4 < cos(zenith angle) < 0.6	CORSIKA, 0.6 < cos(zenith angle) < 0.8	CORSIKA, 0.8 < cos(zenith angle) < 1.
0. < cos(zenith angle) < 0.2	0.2 < cos(zenith angle) < 0.4	0.4 < cos(zenith angle) < 0.6	0.6 < cos(zenith angle) < 0.8	0.8 < cos(zenith angle) < 1.

PulseTime80 - LETime Vs distance for each OM

Energy dependence

JULIeT, 10^5 GeV	JULIeT, 10^6 GeV	JULIeT, 10^7 GeV	JULIeT, 10^8 GeV
CORSIKA, 10^5 GeV	CORSIKA, 10^6 GeV	CORSIKA, 10^7 GeV	CORSIKA, 10^8 GeV
10^5 GeV, red: JULIeT, blue: CORSIKA	10^6 GeV, red: JULIeT, blue: CORSIKA	10^7 GeV, red: JULIeT, blue: CORSIKA	10^8 GeV, red: JULIeT, blue: CORSIKA

Distance Vs PulseTime80 - LETime for each OM

Energy dependence

JULIeT, 10^5 GeV	JULIeT, 10^6 GeV	JULIeT, 10^7 GeV	JULIeT, 10^8 GeV
CORSIKA, 10^5 GeV	CORSIKA, 10^6 GeV	CORSIKA, 10^7 GeV	CORSIKA, 10^8 GeV
10^5 GeV, red: JULIeT, blue: CORSIKA		10^7 GeV, red: JULIeT, blue: CORSIKA	10^8 GeV, red: JULIeT, blue: CORSIKA

Residual time (ATWD) Vs distance for each OM

Energy dependence

JULIeT, 10^5 GeV	JULIeT, 10^6 GeV	JULIeT, 10^7 GeV	JULIeT, 10^8 GeV
CORSIKA, 10^5 GeV	CORSIKA, 10^6 GeV	CORSIKA, 10^7 GeV	CORSIKA, 10^8 GeV
10^5 GeV, red: JULIeT, blue: CORSIKA	10^6 GeV, red: JULIeT, blue: CORSIKA	10^7 GeV, red: JULIeT, blue: CORSIKA	10^8 GeV, red: JULIeT, blue: CORSIKA

Residual time (FADC) Vs distance for each OM

Energy dependence

JULIeT, 10^5 GeV	JULIeT, 10^6 GeV	JULIeT, 10^7 GeV	JULIeT, 10^8 GeV
CORSIKA, 10^5 GeV	CORSIKA, 10^6 GeV	CORSIKA, 10^7 GeV	CORSIKA, 10^8 GeV
10^5 GeV, red: JULIeT, blue: CORSIKA	10^6 GeV, red: JULIeT, blue: CORSIKA	10^7 GeV, red: JULIeT, blue: CORSIKA	10^8 GeV, red: JULIeT, blue: CORSIKA

Remarks

Nue produces a cascade event that is quite different from backgrounds.
Since the nue proeduces a cascade, the longitudinal development is relatively short. So, easy separation from background. On the other hand, sometimes, the starting point are mis-reconstructed due to noise. This has to be avoided for the better separation.
On the other hand, the time residual when the trakc hypothesis is assumed is not reaaly a good parameter for the track distance.

Last modified: Mon Aug 20 17:45:19 JST 2007