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The goal of the MYRRHA project is to demonstrate the technical feasibility of transmutation in a 100 MWth Accelerator Driven System by building a new flexible irradiation complex in Mol (Belgium). The MYRRHA facility requires a 600 MeV linear accelerator delivering a maximum proton flux of 4 mA in continuous operation, with an additional requirement for exceptional reliability. The control system of the future MYRRHA linac will have an essential role to play in this extreme reliability scenario. On the one hand the intrinsic reliability of the entire control system must be ensured. On the other hand control system will have to take up very high level duties of complex decision taking. This paper summarizes the ongoing developments for the concept design of such a control system. The related experimental activities performed and planned around the MYRRHA injector platform (ECR ion source + LEBT + RFQ) will also be described., Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea

Ac­cel­er­a­tor Driv­en Sys­tems (ADS) are promis­ing tools for the ef­fi­cient trans­mu­ta­tion of nu­cle­ar waste prod­ucts in ded­i­cat­ed in­dus­tri­al in­stal­la­tions, called trans­muters. The Myrrha pro­ject at Mol, Bel­gium, placed it­self on the path to­wards these ap­pli­ca­tions with a mul­ti­pur­pose and ver­sa­tile sys­tem based on a liq­uid PbBi (LBE) cooled fast re­ac­tor (80 MWth) which may be op­er­at­ed in both crit­i­cal and sub­crit­i­cal modes. In the lat­ter case the core is fed by spal­la­tion neu­trons ob­tained from a 600 MeV pro­ton beam hit­ting the LBE coolant/tar­get. The ac­cel­er­a­tor pro­vid­ing this beam is a high in­ten­si­ty CW su­per­con­duct­ing linac which is laid out for the high­est achiev­able re­li­a­bil­i­ty. The com­bi­na­tion of a par­al­lel re­dun­dant and of a fault tol­er­ant scheme should allow ob­tain­ing an MTBF value in ex­cess of 250 hours that is re­quired for op­ti­mal in­tegri­ty and suc­cess­ful op­er­a­tion of the ADS. Myrrha is ex­pect­ed to be op­er­a­tional in 2023. The forth­com­ing 4-year pe­ri­od is fully ded­i­cat­ed to R&D ac­tiv­i­ties, and in the field of the ac­cel­er­a­tor they are strong­ly fo­cused on the re­li­a­bil­i­ty as­pects and on the prop­er shap­ing of the beam trip spec­trum.