Accelerator Systems IKCs

Signed and approved In-Kind Contribution (IKC) Agreements for the ESS Accelerator Systems (ACCSYS) sub-project.

AIK 3.6: Drift-Tube Linac with BPMs, BCMs

The In-Kind Agreement signed between ESS and the National Institute of Nuclear Physics (INFN) in Italy consists of the realisation of a Drift Tube Linac (DTL), the last section of the warm Linac, which accelerates the proton beam from the radio frequency quadrupole (RFQ) exit energy (3.62 MeV) to the Superconducting Linac input energy (90 MeV). The beam from the ion source is transported through a low energy beam transport section to the RFQ for bunching and acceleration. The beam is transported from the RFQ and matched to the normal conducting DTL through a medium energy beam transport (MEBT) section. Leaving the DTL, the beam enters the superconducting portion of the Linac.

The DTL is to be installed and will operate in the DTL section of the normal conducting front end of the ESS Linac, after the MEBT. The DTL is a crucial Linac sub-system in terms of controlling (minimising) beam losses, beam emittance increase, and beam halo formation. Frank Helström will be the dedicated ESS contact person, while Andrea Pisent will be the contact person at INFN. The value of the contribution is 16,7M EUR.

AIK 8.4: RF Local Protection System

MTA Atomki in Debrecen, Hungary, will supply the RF-LPS (Local Protection System of the Radio-Frequency sources) for ESS. The RF-LPS project, with an in-kind value of 2.2 M€, is led by Jozsef Molnár on the Hungarian side and Rafael Montaño at ESS.

AIK 14.1: Ion Source Expert

The In-Kind Agreement signed between Bergen University and ESS is for the 24-month secondment of Dr. Øystein Midttun, an expert on ion source technology. The secondee will be a communication link between the European Spallation Source ERIC and INFN-LNS and will work on beam physics aspects for the ion source and LEBT in Sweden, and the remaining time at the Partner’s premises in Bergen, Norway. The Secondee will follow-up and provide feedback on design, prototyping, and manufacturing. He will be responsible for beam physics simulations of the source, plasma studies of the source, and studies of beam extraction. Additionally, the secondee will be involved in development of high-level applications needed to control the ion source in collaboration with the Integrated Control System (ICS) project, as well as development of software to convert measured beam properties to beam distributions needed for beam physics simulations. Walter Wittmer will be the dedicated ESS Work Package Manager. The value of the contribution is 216k EUR.

AIK 17.1: Design, Development and Experimental Evaluation of the High Voltage Power Converter Module for IOT Modulator

The Tallinn University of Technology will develop a prototype for IOT (Inductive Output Tube) modulators for the ESS Accelerator. The modulator development has an in-kind value of 50 k€. It is led by Dmitri Vinnikov in Tallinn and Carlos Martins at ESS after initial contacts between Jaan Järvik (Tallinn) and Anders Ingels (ESS).