SimPipe - the CTAO Simulation Pipeline

The CTAO Simulation Production Pipeline (SimPipe) provides the software, workflows, and data models for generating Monte Carlo simulations for the CTAO observatory.

SimPipe is part of the CTAO Data Processing and Preservation System (DPPS). It integrates all simulation pipeline components into a versioned, reproducible, and validated production system. This package:

• uses input from the Calibration Pipeline (CalibPipe) to model the CTAO observatory.

• generates simulated events for processing by the Data Processing Pipeline (DataPipe) to create instrument response functions.

• uses CTAO computing infrastructure through interfaces with the Workload Management System (WMS) and Bulk Data Management System (BDMS).

SimPipe is the CTAO-specific version of the simtools package. For a detailed user guide, refer to the simtools documentation

Components

• simtools - toolkit for model parameter management, production configuration, setting, validation workflows.

• CORSIKA - air shower simulations.

• sim_telarray - telescope simulations for ray tracing, trigger, read, and camera simulation.

• simulation models - model parameters and production definitions

• simulation model setting - workflows for setting, derivation, and validation of model parameters.

Primary functions

• Generate simulations of the CTAO observatory instrument response function calculation.

• Manage CTAO simulation models and their parameters.

• Simulate calibration data for the CTAO observatory.