MOFAB5
SCK•CEN, Mol, Belgium
Accelerators and Cryogenic Systems, Orsay, France
SCK•CEN, Mol, Belgium
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MOFAB5 |
Status and Challenges of the MYRRHA SRF Linac | |
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| The MYRRHA project aims at realizing a demonstrator Accelerator Driven System (ADS), of which the essential goal is to provide an optimized path towards transmutation. This allows to greatly reduce the burden of long lived nuclear waste originating from fission power plants. The specific ADS application requires a CW driver linac with an exceptionally high beam-MTBF of 250 hours, a beam failure corresponding to a beam trip longer than 3 s. The key feature for obtaining this level of reliability is fault tolerance. It is essentially provided through the serial redundancy that the highly modular structure of the superconducting linac combined with adequate operational margins offers. Phase 1 of MYRRHA will see the construction of the 100 MeV linac based on one family of β=0.37 superconducting 2-gap spoke cavities. The evaluation of the fault tolerance mechanism will be a major topic of this linac’s exploitation. | ||
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Slides MOFAB5 [7.667 MB] | |
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| THP033 | Cryogenic Systems Studies for the MINERVA 100 MeV Proton SC LINAC Project | 918 |
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| The construction of the first phase of the MYRRHA project (MINERVA: 100 MeV-4 mA proton Linac) was recently decided by the Belgium Government. In the long term, the MYRRHA project plans to construct an ADS demonstrator for the transmutation of long-lived radioactive waste. It will include a subcritical reactor of 100 MW thermal power and a CW proton Linac accelerator (600 MeV-4 mA). The main challenge of this Linac is an extremely high reliability performance to limit stresses and long restart procedures of the reactor. The MINERVA Linac includes 30 cryomodules housing 60 Single-Spoke SC cavities. A cryomodule prototype with its valve box is under construction at IPNO institute. The cavities operate at 352 MHz in a superfluid Helium bath at 2K. Therefore, a reliable SC Linac Cryogenic System is essential. This article presents the preliminary studies in this subject including the analysis of high thermal loads induced by the CW mode operation of cavities (950 W@2 K per cryomodule). A Cryogenic Refrigerator with an equivalent power capacity of 2645 W @4.5 K (3970 W with 1.5 overcapacity factor) is proposed. The constrains for the He distribution in the Linac tunnel are also discussed. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2019-THP033 | |
| About • | paper received ※ 23 June 2019 paper accepted ※ 30 June 2019 issue date ※ 14 August 2019 | |
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