Speaker
Description
The ISIS Neutron and Muon Source is a particle accelerator located at the Rutherford Appleton Laboratory in the UK. Protons are energised to 70MeV through the linear accelerator, before accelerating in the synchrotron to 800MeV; with the facility providing beam at a rep rate of 50 Hz. At this energy, protons are delivered to two target stations to produce neutrons and muons (TS1 at 40 Hz and TS2 at 10 Hz). ISIS has been in operation for over 40 years, and as a result, there are many obsolete legacy systems that are nevertheless critical to ISIS operations. Two legacy systems included were the Riken Trigger Unit and the Extract Trigger Module: these two were updated and combined into the Ideal Extract Buffer Unit. These units are responsible for buffering the Ideal Extract Pulse (IEP), in the absence of the IEP they will provide a 50 Hz backup pulse, as this timing is critical for ISIS operations. The Extract Trigger module provides the IEP to Extracted Proton Beamline 1 (EPB), TS1 and the Riken Trigger Unit. Meanwhile, the Riken Trigger Unit is responsible for the IEP to the diagnostics monitors on EPB2, as well as the Riken Muon Target. The Extract Trigger Module buffered output to the High Energy Transfer (HET) rack on TS1. Here the HET Gated Trigger Box performs AND logic on both the IEP and the intensity. This unit will provide the gated outputs for timing on the TS1 instruments. This box is also obsolete and will be absorbed into this project. This paper will present the process of modernising the electronics of all three systems and combining them into one unit which conforms with modern conventions.
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