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Simulation of LVL1 Muon Trigger Using TGC in Athena Framework

This document outlines the simulation of the Level-1 muon trigger system using the Thin Gap Chamber (TGC) within the Athena framework as part of the ATLAS Monte Carlo (MC) production. The primary objective is to evaluate trigger performance and filter events effectively. The simulation includes detailed real electronics design, considerations of hit patterns, and logic implementation. It also addresses the study of timing calibration and diagnosis procedures, while maintaining a robust database of connections between modules.

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Simulation of LVL1 Muon Trigger Using TGC in Athena Framework

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  1. the OO codes for endcap muon trigger simulation Hisaya Kurashige KOBE Univ. LVL1 muon trigger simulation meeting

  2. Objective • Simulate 1st level Trigger using TGC • As a part of MC production in ATLAS • to evaluate Trigger Performance • to filter events • On the frame of Athena • For design of Trigger electronics • to evaluate Implementation of logic • to study Timing calibration and Diagnosis procedures • Stand-alone environment LVL1 muon trigger simulation meeting

  3. TGC Level-1 simulation • Input (same as current DICE) • Hit information of TGC chambers • Chamber number • Hit Position/Time • Momentum information of incoming particles • Output • Raw Data • Hit pattern of chambers • Trigger Information • RoI information to MUCTPI • Test vectors at each stage of trigger logic LVL1 muon trigger simulation meeting

  4. Schematic LVL1 muon trigger simulation meeting

  5. Design policy • Detailed trigger simulation based on real electronics design • Can describe logic according to real implementation of ASIC • Can describe individual module • Can describe connection between modules • Can treat multi-bunch simulation LVL1 muon trigger simulation meeting

  6. Design • Electronics System • “Main” class (management) • Database • Keep information of connection between modules • ASD/Digi • Detector simulation outputs • Sector • Trigger simulator LVL1 muon trigger simulation meeting

  7. Class: Database • Information used in simulation • Cable Connection Table • ASD --> PP • PP --> SB • SB --> HPt • HPt --> Sector Logic • Connection on PC board • PP • Coincidence map • Mask information LVL1 muon trigger simulation meeting

  8. Class: Sector • Simulate a trigger sector • Describe trigger logics • Consisits of PP, SB, HPt, and SL • Timing manager controles multi-bunch signals LVL1 muon trigger simulation meeting

  9. Class: Slave Board • Simulate a SB LVL1 muon trigger simulation meeting

  10. Current Status -1 • Prototype Code was finished on Mar ’00 • Simulate dR,df in a High Pt Board for muon tracks • These are very preliminary results and we found some bugs exist dR,df in a High Pt Board for muon tracks LVL1 muon trigger simulation meeting

  11. Current Status -2 • Comparison of simulation results with Yoji’s results starts • But, there are some problems • Geometry in DICE is different from the final one • We have changed TGC numbering scheme (sector No, chamber No etc.) for production/electronics/simulation from one used in DICE. LVL1 muon trigger simulation meeting

  12. Migration on ATHENA/PESA scheme • Trigger Simulation is a “algorithm” in ATHENA framework • Framework Change • Use TDS (Transient Data Storage) for • Digitizer input (DICE Hit output equivalent) • Digitizer output (RAW data equivalent) • Trigger output (MUCTPI input equivalent) • Test Vectors • Create/Use Detector Data Service • For both trigger and detector simulation • Geometry • Connection Table LVL1 muon trigger simulation meeting

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