Installing the optics

Optics are the heart of any collider simulation. In this section, we will explain how to install the optics that are available for the package: HL-LHC v1.6, HL-LHC v1.3, Run III, and Run III ions.

First, move to or create the directory where you want to install the optics.

HL-LHC v1.6 optics

To clone the HL-LHC optics v1.6, run the following command:

git clone https://gitlab.cern.ch/acc-models/acc-models-lhc.git -b hl16

HL-LHC v1.3 optics

To clone the HL-LHC optics v1.3, run the following command:

git clone https://github.com/ColasDroin/hllhc13.git

Run III and Run III ions optics

Unfortunately, the Run III and Run III ions optics are not available as public repositories yet. They might be added to the https://github.com/lhcopt organization in the future.

In the meanwhile, you will need to use the optics directly from AFS (e.g. from /afs/cern.ch/eng/lhc/optics/runIII). Of course, you can copy the directory wherever you like, but that's not needed.

An example of configuration with the optics loaded from AFS if provided in the template configuration files.