Bulletin 1

The International Computing in High Energy and Nuclear Physics (CHEP) conference originally planned for May 2021 in Norfolk (Virginia, US) has been postponed to 2022 due to the current COVID-19 pandemic, which makes it impossible to organise an in-person event at the scale of CHEP next year.

In agreement with the CHEP International Advisory Committee, CERN will organise an online conference on the same dates. This is therefore an announcement that the 25th International Conference on Computing in High Energy and Nuclear Physics (vCHEP2021) will take place as an online event from 17-21 May 2021

The scientific programme for CHEP 2021 will address the computing, networking, storage and software needs of the world’s leading high energy and nuclear physics experiments that analyse hundreds of petabytes of data using worldwide computing resources.

We plan to focus on a strong high energy and nuclear physics (HENP) programme based on the highest quality material submitted to the conference. For this reason, we ask contributors to prepare an extended submission (as a paper from 6 to 10 pages) that will then be the basis for conference proceedings if accepted. The vCHEP2021 presentation structure will differ substantially from a standard CHEP conference. The most interesting and relevant contributions that focus on innovation in meeting the HENP computing challenges in the coming years will be presented as longer talks in general (plenary) sessions. Other accepted papers will be allocated a short talk organised by theme. The paper submission will open on 1 December 2020 8 December 2020 and close on 28 February 2021. Please note there will be no extension to the paper submission deadline. Paper submission will happen through the conference Indico website:


All contributions accepted at the conference will be published in the form of proceedings (these will be published after the conference, when final revisions of the initially submitted papers have been done). We also plan to select a number of contributions of the highest quality and submit them to a peer-reviewed journal.

Please forward this announcement to anyone who may be interested.

Important dates


Paper submission opens:                      1 December 2020 8 December 2020

Registration opens:                                1 February 2021

Paper submission closes:                      28 February 2021

Paper acceptance notifications:            15 April 2021

Conference:                                           17-21 May 2021

Final paper revision for publication:       25 June 2021



Questions about the scientific organisation, sponsorship, or other enquiries should be addressed to: chep2021-chairs@cern.ch

We look forward to your contributions and participation at vCHEP2021.

Simone Campana and Graeme A Stewart

vCHEP2021 Conference Chairs