Projects & Experiments¶

The SCDF supports a range of experiments and collaborations, providing computing, storage, and networking infrastructure. Each experiment below has its own landing page. New users should start with the Start here link for their experiment, then use the shared resources at the bottom of this page for grid, certificate, and service documentation that applies to everyone.

US ATLAS¶

• ATLAS at the SCDF — Landing page for US ATLAS users
• Start here: Joining the ATLAS VO — CERN HR registration, certificate, and VO membership
• US ATLAS Tier 3 — Tier-3 facility overview
• US ATLAS NFS Service — NFS filesystems for US ATLAS users
• US ATLAS Traineeship 08/2026 — Materials for the August 2026 traineeship

Belle II¶

• Belle II at the SCDF — Landing page for Belle II users and services

Analysis Facility

• Start here: Analysis Facility Overview — Prerequisites and quick start
• Getting a BNL Account — Account request steps
• SSH Interactive Nodes — Command-line access
• NoMachine NX — Graphical desktop sessions
• JupyterHub — Web-based notebooks
• Storage — Scratch and dCache space
• HTCondor Batch Jobs — Scaling with b2af-submit
• B2Luigi — Workflow management

Services

• Conditions Database (CDB) — Belle II CDB at BNL
• CDB Backup Policy — Backup and retention policy
• DDM Information — Data Distribution Management

FCC / USFCC¶

• FCC Analysis Facility at BNL — Landing page and facility overview
• Start here: Onboarding Checklist — Ordered steps for new users
• Apply for Accounts — Account types and requests
• BNL Federated ID Account — Federated identity sign-up
• SSH, Software and Batch — Interactive nodes, CVMFS software, HTCondor
• Jupyter — JupyterLab at the FCC AF
• Containers — Singularity/Apptainer usage
• ML Containers — Machine learning environments
• Working between BNL and CERN — Data and workflow movement
• Using VSCode — Remote development
• FAQ and Tips
• Privacy Disclaimer

STAR¶

• STAR at the SCDF — Landing page for STAR users
• Start here: Accounts — Request an SCDF account for the STAR experiment
• Interactive Nodes — starsub[01-07] general-purpose nodes via the SSH gateways
• Obtaining a Grid Certificate — Certificate request details for STAR users
• Joining the STAR VO — STAR VO enrollment
• HTCondor — Batch job submission
• CRS Batch Software — Production reconstruction jobs (selected users)
• AFS — /afs/rhic.bnl.gov/star experiment area
• Git Services — STAR Gitea repositories

Grid Computing¶

• Grid Computing — Landing page for OSG and WLCG grid users
• Start here: Grid Users — Ordered steps: obtain a certificate, then join a VO
• VOMS — Virtual Organization Membership Service
• VOMS Group Managers — Guide for VO group managers
• Joining a VO — General VO enrollment
• Joining the PHENIX VO
• Joining the STAR VO

Grid Certificates¶

Required for grid job submission and VO membership, regardless of experiment.

• Grid Certificate FAQ
• Installing a Grid Certificate
• Adding Certificates to a VO Membership
• User Guide for Grid Resources
• Certificate Services — Obtaining and managing certificates at the SCDF

Shared Resources¶

Services used across experiments. See the full Services section for more.

• Accounts — Requesting and managing SCDF accounts
• HTCondor — Batch system used by all experiment facilities
• Storage — GPFS, dCache, HPSS, and transfer tools
• CVMFS — Experiment software distribution
• JupyterLab — Notebook service
• Experiment-Managed Jupyter Areas — Custom kernels and environments per experiment
• Help & Support — RT tickets and account help