IRC and SAC inefficiency simulation

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IRC and SAC inefficiency simulation. Spasimir Balev /CERN/ 14.12.2010. Simulation of IRC. Simulation of SAC. 20 mrad. Simulation of LKr /CHOD/RICH/STRAW. LKr simulation: very slow, so only events with interesting topology are fully simulated: p + with 15 < E < 35 GeV - PowerPoint PPT Presentation

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<p>IRC/SAC ineff WIP</p> <p>IRC and SAC inefficiency simulationSpasimir Balev/CERN/14.12.2010Simulation of IRC</p> <p>2Simulation of SAC</p> <p>20 mrad3Simulation of LKr/CHOD/RICH/STRAWLKr simulation:very slow, so only events with interesting topology are fully simulated:p+ with 15 &lt; E &lt; 35 GeVat least 1 g with R 40 MeVESAC &gt; 40 MeV(double the MIP deposit)</p> <p>LKrtotal energy deposit (ELKR) by cells which:are 10 cm away from the other photonare 20 cm away from p+are with energy Ecell&gt;300 MeVPhoton is seen if ELKR&gt; 500 MeVRICHNumber of PMTs with hitsNRICH &gt; 25</p> <p>CHODcount number of slabs with total energy deposit &gt; 2 MeVNCHOD &gt; 8</p> <p>STRAWScount the number of straw hits outside 5 mm radius from impact point of p+ from K decayNSTRAW &gt; 155CHOD multiplicity</p> <p>6NCHODNCHODpnnpp0no interactionsinteractions</p> <p>4 6 8 10 12 14 16 18 20 224 6 8 10 12 14 16 18 20 22pnn efficiencyIRC inefficiencyRICH multiplicity</p> <p>7NRICHNRICHpnnpp0no interactionsinteractions20 22 24 26 28 30 32 34 36 3820 22 24 26 28 30 32 34 36 38pnn efficiencyIRC inefficiencySTRAW multiplicity</p> <p>810 12 14 16 18 20 22 24 28 3010 12 14 16 18 20 22 24 28 30NSTRAWNSTRAWpnnpp0no interactionsinteractionspnn efficiencyIRC inefficiencySelection and SAV zones114 &lt; ZVTX &lt; 174 m15 &lt; Ep+ &lt; 35 GeVp+ in CHOD acceptanceRp+IRC &gt; 150 mmno p+ m+ decayat least one photon with RIRC &lt; 200 mm</p> <p>336340 pp0 events generated</p> <p>It is required the other photon to be with RIRC&gt;250 mm</p> <p>The event is classified according to the impact photons impact point 150145615912xyOUTER RINGIRCINNER RINGSAC9ComparisonsGiuseppes selection[as close as possible]</p> <p>The photon is not detected if all of the following is fulfilled:ELKR500 MeV)ESAC</p>

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