SRF2011 - List of Authors (Ainsworth, R.)

Paper	Title	Page
FRIOB06	The ESS Accelerator	994
	M. Lindroos CERN, Geneva, Switzerland R. Ainsworth Royal Holloway, University of London, Surrey, United Kingdom R.D. Duperrier CEA/DSM/IRFU, France S. Molloy, S. Peggs, K. Rathsman, R. Zeng ESS, Lund, Sweden R.J.M.Y. Ruber Uppsala University, Uppsala, Sweden
	In 2003 the joint European effort to design a European Spallation Source resulted in a set of detailed design reports. Lund was agreed as the site in 2009. A company, ESS AB, has been created to design, build and operate ESS. A collaboration has been formed for the accelerator work and an update project has been agreed and financed. Detailed planning for the prototyping in a Prepare-to-build (P2B) project has also started. The current status of the Design Update project for the accelerator will be presented, together with an outline of future work. The baseline for the updated design delivers 5 MW of 2.5 GeV protons to a single target, in 2.86 ms long pulses with a 14 Hz repetition rate. The linac will have a normal conducting front end with an ion source, an RFQ and a DTL. The superconducting part starts with spoke cavities followed by two families of elliptical cavities. It will be the first time that spoke cavities are used in a major accelerator. Work is being done to optimize the energy efficiency and to make further use of the heat from the cooling water coming out of the facility. Finally, potential future upgrades of power and intensity are considered. Submitted on behalf of the ESS Accelerator Collaboration

Paper

Title

Page

The ESS Accelerator

994

M. Lindroos
CERN, Geneva, Switzerland
R. Ainsworth
Royal Holloway, University of London, Surrey, United Kingdom
R.D. Duperrier
CEA/DSM/IRFU, France
S. Molloy, S. Peggs, K. Rathsman, R. Zeng
ESS, Lund, Sweden
R.J.M.Y. Ruber
Uppsala University, Uppsala, Sweden

In 2003 the joint European effort to design a European Spallation Source resulted in a set of detailed design reports. Lund was agreed as the site in 2009. A company, ESS AB, has been created to design, build and operate ESS. A collaboration has been formed for the accelerator work and an update project has been agreed and financed. Detailed planning for the prototyping in a Prepare-to-build (P2B) project has also started. The current status of the Design Update project for the accelerator will be presented, together with an outline of future work. The baseline for the updated design delivers 5 MW of 2.5 GeV protons to a single target, in 2.86 ms long pulses with a 14 Hz repetition rate. The linac will have a normal conducting front end with an ion source, an RFQ and a DTL. The superconducting part starts with spoke cavities followed by two families of elliptical cavities. It will be the first time that spoke cavities are used in a major accelerator. Work is being done to optimize the energy efficiency and to make further use of the heat from the cooling water coming out of the facility. Finally, potential future upgrades of power and intensity are considered.
Submitted on behalf of the ESS Accelerator Collaboration