ESS Circulators and Loads

The mandate of the European Spallation Source ERIC is to design, plan, construct, commission, operate and decommission the European Spallation Source (ESS).

It is located in Lund, Sweden, co-hosted by Sweden and Denmark and has more than 17 Partner Countries, including the UK. The UK contribution is coordinated by STFC. The facility will deliver its first neutrons in 2019 and is expected to be fully operational by 2025. The European Spallation Source (ESS) will be one of the largest infrastructures in Europe and will be used for neutron production for materials research. It will use a long pulsed superconducting linac and accelerate a 62.5 mA proton beam current to the energy of 2000 MeV. Peak beam power to the target will be 125 MW, 7 times more than the highest power existing facility.

STFC are providing a number of goods and services on behalf of the ESS. . This tender is for components of the RF distribution system (RFDS) for the Spoke, Medium beta elliptical and High beta elliptical cavities.

The supply shall comprise the components of the RFDS. The number of WR1150 circulators and loads required for MB is confirmed at 36, the number for HB is currently being reviewed. The supplier should therefore give costs for the range 36 to 120 circulators and loads to be supplied. The actual number required will be known before Contract signature. Note that the MB and HB circulators and loads are the same.

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