Study on the side and upstream ECAL/TPC Andriaseta Sitraka - PowerPoint PPT Presentation

Study on the side and upstream ECAL/TPC Andriaseta Sitraka (University of Antananarivo) Dr. Guang Yang (Stony Brook University) 1

Geometry  There are 0.5 m shell of TPC and ECAL and 0.3 m shell of Magnet  Goal of the study :  Observation of what happen without side No side TPC/ECAL ECAL/TPC  Without side TPC and ECAL (due to symmetry of the event topology and the top/bottom side) :  phase space is not lost  the efficiency is lost 2

Geometry  The total volume is 2.4 x 2.4 x 2 m and Fiducial 3 Volume is 2.2 x 2.2 x 1.8 m 3  The veto region is 10cm shell  The efficiency are determined by selected events corresponding to a certain amoung of hadron or lepton energy contain in side veto region If the energy deposit in this veto region greater than a certain amount, this event is rejected. 3

Hadron Efficiency -left/right row( 2.2x2.2x1.8 FV curve) 4

Hadron Efficiency -top/bottom row( 2.2x2.2x1.8 FV curve) 5

Hadron Efficiency -left/right row( 2.2x2.2x1.8 FV curve) Cut in lepton is constant (< 0.01) 6

Hadron Efficiency -top/bottom row( 2.2x2.2x1.8 FV curve) Cut in lepton is constant (< 0.01) 7

Hadron Efficiency -left/right row( 1x1x1 FV curve) 8

Hadron Efficiency -top/bottom row( 1x1x1 FV curve) 9

Hadron Efficiency -left/right row( 1x1x1 FV curve) Cut in lepton is constant (< 0.01) 10

Hadron Efficiency -top/bottom row( 1x1x1 FV curve) Cut in lepton is constant (< 0.01) 11

Geometry Veto region  Without upstream ECAL and TPC :  phase space are lost for the backward leaking events  If the upstream shell region contains a certain amount of energy, we lose events with those phase spaces 12

Muon Efficiency in upstream veto --> veto on hadronic deposit ( 2.2x2.2x1.8 FV) - We did not completely lose any significant muon kinimatics phase space. 13

Muon Efficiency in upstream veto --> veto on lepton deposit ( 2.2x2.2x1.8 FV) 14 - We did not completely lose any significant muon kinimatics phase space.

Muon Efficiency in upstream --> 1x1x1 FV - We did not completely lose any significant muon kinimatics phase space. 15

Muon Efficiency in upstream --> 1x1x1 FV 16 - We did not completely lose any significant muon kinimatics phase space.