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The Athena Detector at IP6 for Electron-Ion Collider experiment.
- [Central detector](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/detector_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom120;ROTY320;ROTZ340;trz0;trr0;ctrl;all)
- [Full Detector (including beamline)](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/detector_geo_full.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom75;ROTY290;ROTZ350;trz0;trr0;ctrl;all)
- [Inner detector (without calorimetry)](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/inner_detector_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom75;ROTY320;ROTZ340;trz0;trr0;ctrl;all)
- Subsystem views:
- [Calorimetry](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/calorimeters_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom120;ROTY320;ROTZ340;trz0;trr0;ctrl;all)
- [PID](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/pid_only_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom75;ROTY320;ROTZ340;trz0;trr0;ctrl;all)
- [dRICH](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/drich_only_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom75;ROTY290;ROTZ350;trz0;trr0;ctrl;all)
- [pfRICH](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/pfrich_only_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom55;ROTY49;ROTZ350;trz0;trr0;ctrl;all&)
- [DIRC](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/dirc_only_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom120;ROTY320;ROTZ340;trz0;trr0;ctrl;all)
- [ToF](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/tof_only_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom55;ROTY49;ROTZ350;trz0;trr0;ctrl;all&)
- [Tracking](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/tracking_only_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom75;ROTY320;ROTZ340;trz0;trr0;ctrl;all)
- [Vertex detector](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/vertex_only_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom120;ROTY320;ROTZ340;trz0;trr0;ctrl;all)
- [Far-forward](https://eic.phy.anl.gov/geoviewer/index.htm?nobrowser&file=https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/geo/ip6_geo.root?job=dump_geometry&item=default;1&opt=clipx;clipy;transp30;zoom40;ROTY290;ROTZ350;trz0;trr0;ctrl;all)
<a href="https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/images/view01.pdf?job=report">
<img src="https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/images/view01.png?job=report" width="400px" />
<a href="https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/images/view01_top.pdf?job=report">
<img src="https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/images/view01_top.png?job=report" width="400px" />
[Browse latest](https://eicweb.phy.anl.gov/EIC/detectors/athena/-/jobs/artifacts/master/browse/images?job=report)
[Detector views](https://eicweb.phy.anl.gov/EIC/detectors/athena/-/jobs/artifacts/master/raw/doc/dawn_views.md?job=report)
[Constants listing](https://eicweb.phy.anl.gov/api/v4/projects/473/jobs/artifacts/master/raw/doc/constants.out?job=report)
Getting Started
---------------
You will likely want to use this repository along with the IP6 repository:
```bash
git clone https://eicweb.phy.anl.gov/EIC/detectors/athena.git
git clone https://eicweb.phy.anl.gov/EIC/detectors/ip6.git
ln -s ../ip6/ip6 athena/ip6
```
### Adding/changing detector geometry
Hint: **Use the CI/CD pipelines**.
To avoid dealing with setting up all the software, we recommend using the CI/CD to make changes.
Any feedback to help this process is appreciated.
Here is how to begin:
1. Look at existing detector constructions and reuse if possible. Note that "compact detector descriptions" -> xml files, and "detector construction" -> cpp file.
2. Modify xml file or detector construction.
3. Create a WIP (or draft) merge request and look at the CI output for debugging. Then go to back to 2 if changes are needed.
4. Remove the WIP/Draft part of the merge request if you would like to see your changes merged into the master.
See:
- [Talk at computing round table](https://indico.jlab.org/event/420/#17-automated-workflow-for-end)
### Compiling (avoid it)
First, see if the use case above is best for you. It most likely is and can save a lot of time for newcomers.
To run the simulation locally, we suggest using the singularity image.
More details can be found at the links below:
- https://dd4hep.web.cern.ch/dd4hep/page/beginners-guide/
- https://eic.phy.anl.gov/tutorials/eic_tutorial/
- https://eicweb.phy.anl.gov/containers/eic_container/
- [Athena_Detector_doc] (https://escalate.readthedocs.io/projects/g4e/en/latest/detector_naming.html)
- [g4e] (https://gitlab.com/eic/escalate/g4e)
- [eic_tutorial] (https://argonne_eic.gitlab.io/tutorial/eic_tutorial/part2/adding_detectors/)
- [DD4hep] (https://github.com/AIDAsoft/DD4hep)
- [DD4hep_manual] (https://dd4hep.web.cern.ch/dd4hep/usermanuals/DD4hepManual/DD4hepManual.pdf)