1. Status update of L1 Plots for note Hardeep Bansil, Juraj Bracinik, Paul Newman University of Birmingham Trigger E/Gamma Signature Group Meeting 08/07/2010

2. Update Latest plots added to agenda and sharepointsharepoint Added results for run 155116 to plots to slightly improve statistics Will make preselection match closer to what Michele and Martin use – Vertexing requirements or is MBTS timing better? Will update some of the resolutions and efficiencies to exclude the transition region Will also analyse medium electrons too Trigger Tower plots - Can cut out more towers where it is known there are problems After long struggle, do have some Monte Carlo samples to compare with – plots to be updated soon 2

3. Update η ranges for photons and electrons – Exclude transition region (1.37 < |η| < 1.52) – Also do you require |η| < 2.37/2.47 for photons and electrons? Finding out problems on η-φ map relating to bad channels Mean on E T resolution plot too large (19%) – Using DESDM_EGAMMA for analysis – Get the offline e/γ [egamma] – Get the CaloCluster [cluster()] – How to get raw E T for this? E T Resolution v E T – μ and σ as function of E T 3 Mean = 0.19