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Published byReyna Alwin Modified about 1 year ago

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Sterile@PS - E313 Max e Gabriele

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Uscenti dal near: 47% Uscenti dal far: 32% Distanza in LAr MCS Range

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Momentum reconstruction: RPC No digits (solo hits) No track-finding (fit diretto sugli hit a disposizione) Fit parabolico in XZ (bending), lineare in YZ (not-bending)

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In each side of the magnet arm we can reconstruct an independent angle j, j=1,...,6. Each j can be reconstructed with one station (singlets) or two stations (doublets) We compute k = i – j, k=1,...,4, angle differences between adjacent station-pairs – 55% of ’s comes from doublets – 9% from singlets – 36% are mixed 4 Momentum reconstruction: PT M. Sioli - SLAC Experimental Seminar - June 22, 2010 l B ≡ Bd/l = effective magnetic field

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Charge reconstruction Charge is reconstructed according to the sign If each track contributes to multiple angles, a weighted average is computed – weights = experimental errors on M. Sioli - SLAC Experimental Seminar - June 22, 20105 where R = (1.9 ± 0.9) % Cross-check with beam data pp

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p and q reconstruction: E313 Arrivano al 1 arm: 26% Passano il 1 arm: 19% Passano anche il 2 arm: 14% q-misid(RPC, 1 arm) ~ 13% q-misid(DT, 1 arm) ~ 5% dp/p da capire: – Bias – Risoluzione RPCDT 20%26%

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