ploughshare is hosted by Hepforge, IPPP Durham


for all your interpolation grid needs

Ploughshare allows users from the HEP community to share fast interpolation grids in a standardised way. PDF fitters and those from the experimental collaborations are be able to upload their validated grids and access the grids of others quickly and with the minimum of fuss. 

What is Ploughshare ?

  1. Quick to use - a web based utility for the automated distribution of fast inperpolation grids for the high energy physcis community.
  2. Secure storage - registered users can upload grid files and corresponding standard format configuration files to describe the grids and physics processes and these are added to a central repository.
  3. Automatic distribution - a standard utility library is provided to download any required grids automatically in user code.

A utility for the community Ploughshare allows users to share their grids, so it is important that the provenance of the grids is guaranteed. This is achieved by allowing only registered users to upload their validated grids. Subsequently however, anyone is free to download and use the grids as they wish.

Ploughshare is an open source project.

Fast operations summary

Navigate quickly to some of the primary operations you might be interested in

Download grids

Veiw full details for all the lovely grids available for download

Register for upload

Register for grid upload, and find how what to do to upload grids

Download grid code

Get the code for the automated download of multiple grids


Search the grid database for available grids

tablesql::Failed to reach grid database

Summary of available grid datasets

Here are all the uploaded and available grids. The grid database can be searched using the search facility here

Experiment Collision Energy Process Calculation Group arxiv tgz file direct link

Available grid statistics

Statistics for the submitted grids are collected and reported here

Breakdown by physics process

Statistics on the submitted grids are show here, broken down by number of grids by process, DIS, ep, heavy ion etc.

Eventually, it is hoped that this section will show a breakdown of the different grids submited for a number of differently configurable options

Proton-(anti)proton collisions


Heavy-ion collisions


Deep inelastic scattering