What is LHC@home?

This a volunteer computing project that uses Internet-connected computers to advance Particle and Accelerator Physics. Participate by downloading and running a free program on your computer. By default, you can run the classic LHC@home application Sixtrack, for simulations of accelerator physics, and help researchers at CERN to improve the LHC.

Other LHC@home simulations that utilizes virtualization to run applications for Theory and experiment simulations for ATLAS, CMS and LHCb are also available.

Please note that some of the applications on LHC@home requre Virtual Box to be installed. Please visit the LHC@home information site for more information. If you have any problems or questions please visit the Message Boards, Questions and Answers and FAQ.

Join LHC@home

User of the Day

User profile Profile Sid
I am crunching BOINC projects from deep in the heart of Texas. BOINC is not about the competition, but participating in and contributing to...


Downtime Monday 18th
The LHC@home BOINC servers will be degraded on Monday 18th of September due to a database upgrade. BOINC clients are likely to generate errors when trying to download or upload tomorrow morning.

Thanks for your contributions and happy crunching!
17 Sep 2023, 16:06:00 UTC · Discuss

Server upgrade
The LHC@home BOINC servers have been upgraded to the latest server release, 1.4.2.
24 Jan 2023, 7:45:31 UTC · Discuss

Seasons greetings
Many thanks to all our volunteers for your contributions to LHC@home over the last year!

We in the LHC@home team wish you a Merry Christmas and restful holidays.
21 Dec 2022, 9:58:39 UTC · Discuss

Best wishes for 2022
The LHC@home team wishes you all a Happy New Year and all the best for 2022!

The simulations carried out under LHC@home contribute to improvements to the LHC accelerator as well as the experiments. The upcoming Run 3 of the LHC shall start soon.

Meanwhile you can take a look at this video with highlights from CERN during 2021.

Many thanks for your contributions and happy crunching!
5 Jan 2022, 12:29:14 UTC · Discuss

Lack of CMS tasks due to a problem in WMAgent development
Unfortunately, I have been unable to submit new workflows to the CMS project since yesterday, and the job queues have now drained.
The cause is a change introduced in the development of the CMS work-flow management system. These changes are tested first on a development system before being moved to the production system. We currently use the development system to run CMS@Home, so the change is impacting us.
I'm trying to find out when a fix will be forthcoming, but until then set No New Tasks for CMS or switch to another project.
I'm sorry about this. I will let you know when I am able to submit jobs again.
9 Dec 2021, 15:15:02 UTC · Discuss

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