UKRI-3937 ISIS Linear Accelerator

ISIS, sited at the Rutherford Appleton Laboratory (RAL), is the world's most productive pulsed neutron source. Intense bursts of neutrons are produced at 20mS intervals when a heavy metal target is bombarded by a high-energy (800 MeV) proton beam from a synchrotron accelerator releasing neutrons by the process of spallation. This is for a contract for a replacement for the Accelerator system which uses a thermionic triode valve (tube) amplifier which is coming to the end of its production life. This is required to ensure continued operation of the facility.