For research purposes, specific software environments and tools need to be deployed to analyse these complex primary data. In addition to the data below, you will find instructions for setting up your working environments here.
  • CMS Open Data are available in the same format as used in analysis by CMS physicists. A CMS-specific analysis framework is needed, and it is provided as a Virtual Machine image with the CMS analysis environment. The data can be accessed directly through the VM image. Basic information of the data contents is provided in About CMS and in About CMS Physics Objects. The original data are in primary datasets, i.e. no selection nor identification criteria have been applied (apart from the trigger decision), and these have to be applied in the subsequent analysis step. The 2011 data release includes simulated Monte Carlo datasets, but no simulated datasets are provided for the 2010 release.
  • These ALICE datasets contain a sample of events from the pp and PbPb LHC runs in 2010, in the ESD (event summary data) format of the ALICE reconstruction program. The events are unbiased and are not a result of event selections and this format is directly usable by the analysis done by ALICE physicists. The data can be downloaded and used from a specific ALICE virtual machine image which can be installed using this procedure (link) and which demonstrates some ALICE analysis and event display examples. A single dataset is exposed in the form of a custom VSD (V0 summary data) format which is not usable in normal analysis but just by a set of masterclasses available also from the ALICE VM. For the first release, no simulated Monte Carlo datasets are provided.
  • According to the ATLAS Data Access Policy, reconstructed data and accompanying tools will be released after reasonable embargo periods.
  • According to the LHCb External Data Access Policy, reconstructed data will be made openly accessible 5 years after the data are taken. For the data that have already been taken, the 5 years are counted from the date of ratification of the experiment’s policy. Thus, the first release of LHCb data will happen in 2018.
CMS Open Data are available in the same format as used in analysis by CMS physicists. A CMS-specific analysis framework is needed, and it is provided as a Virtual Machine image with the CMS analysis environment. The data can be accessed directly through the VM image. Basic information of the data contents is provided in About CMS and in About CMS Physics Objects. The original data are in primary datasets, i.e. no selection nor identification criteria have been applied (apart from the trigger decision), and these have to be applied in the subsequent analysis step. The 2011 data release includes simulated Monte Carlo datasets, but no simulated datasets are provided for the 2010 release.
These ALICE datasets contain a sample of events from the pp and PbPb LHC runs in 2010, in the ESD (event summary data) format of the ALICE reconstruction program. The events are unbiased and are not a result of event selections and this format is directly usable by the analysis done by ALICE physicists. The data can be downloaded and used from a specific ALICE virtual machine image which can be installed using this procedure (link) and which demonstrates some ALICE analysis and event display examples. A single dataset is exposed in the form of a custom VSD (V0 summary data) format which is not usable in normal analysis but just by a set of masterclasses available also from the ALICE VM. For the first release, no simulated Monte Carlo datasets are provided.
The LHCb (Large Hadron Collider beauty) experiment aims to record the decay of particles containing b and anti-b quarks, known as B mesons. The detector is designed to gather information about the identity, trajectory, momentum and energy of each particle.