EpIC1.1.6-1.0

DDVCSdataset EpIC1.1.6-1.0 Release Note

Overview

First release of the DDVCS (Double Deeply Virtual Compton Scattering) Monte Carlo event dataset repository for the
Electron-Ion Collider (EIC). This release focuses on the Low-Q² limit of (Quasi-real) Timelike Compton Scattering using the
EpIC generator.

What's Included

EpIC Generator Steering Cards (EpIC_xml/)

• 18x275 GeV beam configurations for electron decay channels (e⁺/e⁻)
• 18x275 GeV beam configurations for muon decay channels (μ⁺/μ⁻)
• Support for both positive and negative helicity beams
• Configurable kinematic ranges for y, Q², t, Q²', and angular variables

Production Metadata (metadata/Sept_1M_Campaign/)

• Log files from September 2024 production campaign
• Random seeds for 1M event generation per channel
• Documentation for eminus, eplus, muminus, and muplus channels

Key Features

• Event Generation: 1,000,000 events per configuration
• Subprocess Types: ALL (includes both Bethe-Heitler and DDVCS contributions)
• Kinematic Coverage:
  • Q²: 0-10 GeV²
  • Q²': 2-18 GeV²
  • t: -2 to -0.0001 GeV²

Workflow

Events are generated in HepMC ASCII format and processed through:

1. Afterburning with abconv (available in eic-shell)
2. Conversion to HepMC3 ROOT format with hepmc3ascii2root