ess accelerator tunnel exposed


The ESS accelerator high level requirements are to provide a 2.86 ms long proton pulse at 2 GeV at repetition rate of 14 Hz. This represents 5 MW of average beam power with a 4% duty cycle on target.

The ESS Accelerator Division is responsible for the requirements for all systems for the accelerator and assures that core know-how for the full system is secured at ESS.

External collaboration partners will do the major part of the design update work and a large part of the construction. They are operating with a collaboration guided by a collaboration agreement and with individual contracts for each collaborator with significant work at ESS.

The work of the Accelerator Division is overseen by the Accelerator Management Team (AccMT) and the Accelerator Technical Board (ATB). The ATB includes all work package leaders, the project management team and representatives for all the Accelerator partner institutes.

Accelerator Division Management Team

Mats Lindroos

Head of Accelerator Division


Caroline Prabert

Personal Assistant


Andreas Jansson

Group leader Beam Physics, Operations & Beam Diagnostics


Håkan Danared

Deputy Head of Accelerator Division


Morten Rostrup Forup Jensen

Section Leader


Philipp Arnold

Section Leader Cryogenics


Marcelo Ferreira

Section Leader


The ESS Accelerator Construction Project Work Packages:


  1. Management
  2. Accelerator Physics
  3. Normal Conducting Accelerator (Front End)
  4. Spoke Cryomodules
  5. Elliptical Cryomodules
  6. Beam Delivery Systems (HEBT+A2T)
  7. Beam Diagnostics
  8. RF Systems
  9. N/A
  10. Test Stands
  11. Cryogenics*
  12. Vacuum*
  13. Safety
  14. Accelerator Integration
  15. Electrical Support
  16. Cooling Support
  17. Power Convertors
  18. Engineering Resources
  19. WP 98 General Installation Support
  20. WP 99 Installation

*The Cryogenics and Vacuum Work Packages encompass all such services at ESS.

From Sicily to Sweden: Ion Source Delivered

The first machine components were lowered into the Accelerator Tunnel Tuesday as ESS took delivery of the LINAC's Ion Source and Low-Energy Beam Transport line from Italy's INFN.

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How Do You Power the World’s Most Powerful Linac?

Carlos Martins and his ESS power converters team have successfully brought a new high-voltage modulator design to series production.

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The Accelerator Comes Together in Lund: A Talk With Roland Garoby

“It is really a treasure chest that is being built here.”

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Led by France, Italy and the UK, ESS is Pushing Accelerator Technology to its Limits

France's CEA, is guiding the design, production and testing of the superconducting radio-frequency elliptical cryomodules.

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CNRS and ESS Advance a New Standard for Linac Design

An important test result was achieved at the accelerator lab of the French Institute of Nuclear Physics, IPN-Orsay.

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42 In-Kind Work Packages, from 18 Institutes, in 8 Countries