Analysis Cuts

1) sub-systems cuts require firing trigger:1, 2, 3, 4 & TOF: 1, 2
in addition selecting the highly populated region of Time-over-Threshold (ToT) vs Leading Edge time (LE) plots.
Click here to go to LE vs TOT.

2) Time Of Flight sub-system (TOF) cuts.
Click here to go to TOF sub-system cut.

3) Hodoscope sub-system cut require firing one and only one of the three central horizontal fibers (and) one and only one of the three central vertical fibers
Click here to go to Hodoscope system cut.

4) A loos Cherenkov angle cut was applied to calculate time difference between measured photon time and calculated photon time.

• For protons |(angle from LUT - theoritical proton cherenckove angle )|< 0.04 rad.
• For pions |(angle from LUT - theoritical pion cherenckove angle )|< 0.04 rad.

5) The applyed time difference cuts were typically +/- 5 sigma of the gauessian fit of the ture path inside the prizm histogram"
Click here to go to time difference plots.

6) Extraction of reconstructed Cherenkov angle was performed after applying time difference cut.
Click here to go to Cherenkov ampiguity distribution plots.

7) Match between ambiguity distributions for data and simulation.
Click here to go to matching plots.

8) Background subtraction carried out to calculate single photon resolution (SPR) and the mean value of the Cherenkov ampiguity distribution.
Click here to go to background subtraction plots.
Click here to go to single photon resolution plots.
Click here to go to reconstructed Cherenkov angle plots.

9)The photon yield calculated after applying the time difference cut and cherenkove angle cut, which is typically:

• |(angle from LUT - reconstructed Cherenkov angle )|< 5 sigma of the fit "gauessian+line" of the cherenkov ambiguity distribution after background subtraction histogram in radians.

Click here to go to photon yield plots.