TASK 4 - Fission Target

eurisol ds
Engineering design and prototyping of the UCx target and ion source module coupled with the high power converter target and remote handling system, design of the target shape for optimum irradiation. A high Z solid converter will also be investigated.
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INTERNAL TASK NOTE
Design of 1+ Ion Source Coupling First Design of the Resonant Ionization Laser Ion Source For the Multi-Mega Watt Target Station
21/09/2009 -Task : TASK 4
Author(s) :A. Olivier-Kaiser, F. Le Blanc, C. Lau

The realisation of next-generation ion sources suitable for the EURISOL multi-mega-watt (MMW) target station needs exhaustive studies and developments. An exhaustive review was carried out to evaluate the capability of the ion-sources to operate under the irradiation conditions of the MMW target station. In addition, selectivity must be taken into account to avoid the spread of unwanted radioactivity out of the target-ion-source system (TIS). These studies led to consider RILIS (Resonance Ionization Laser Ion Source) as the reference ion source for this target station.
Improved Design of EURISOL Fission Target Systems and Handling
08/07/2009 -Task : TASK 4
Author(s) :F. Negoita, L. Serbina, E. Udup, O. Alyakrinskiy, M. Barbui, J. Bermudez, L.B. Tecchio, Y. Kadi, C. Kharoua, Y. Romanets

The report discusses the constraints, solutions and options for integration of the main systems needed to assure the operation and maintenance/exchange of the fission target ion sources assemblies capable to withstand very high neutron fluxes around EURISOL multi-MW neutron converter, to provide the desired fission rate of 10e15 fis./sec. and to extract with highest possible efficiencies the fission products as radioactive ion beam. Adapting the concepts developed for a single fission target within PIAFE and MAFF projects, simultaneous operation of six fission targets was proposed for EURISOL. A first design following these concepts was presented in a previous report. Here we describe several improvements implemented in the design for a more efficient, more reliable and safer operation. An optimized layout of the part of the EURISOL MMW station related to fission target services and handling is proposed as well.
FISSION TARGET DESIGN AND INTEGRATION OF NEUTRON CONVERTER FOR EURISOL-DS PROJECT
08/07/2009 -Task : TASK 4
Author(s) :J. Bermudez, O. Alyakrinskiy, M. Barbui, F. Negoita, L. Serbina, L.B. Tecchio, E. Udup

A study of a new fission target for EURISOL-DS is presented with a detailed description of the target. Calculations of several configurations were done using Monte Carlo code FLUKA aimed to obtaining 1015 fissions/s on single target. In Eurisol, neutrons inducing the fission reactions are produced by a proton beam 1GeV-4mA interacting with a mercury converter. The target configuration was customized to gain fission yield from the large amount of low energy neutrons produced by the Hg converter. To this purpose, the fissile material is composed by discs of 238-Uranium carbide enriched with 15 g of 235-U. Studies of several geometries were done in order to define the shape and composition of uranium target, taking into account the mechanical and space constraints
Investigation on Ion Source Parameters
07/07/2009 -Task : TASK 4
Author(s) :M. Cheikh Mhamed, S. Essabaa, C. Lau

The EURISOL multi-mega-watt target station requires dedicated radioactive ion sources. Notably, they must be capable of operating under extremely hard radiations and with a larger fission target producing over 1014 fissions/s. The realisation of next-generation ion sources suitable for such operating conditions needs exhaustive studies and developments. In order to take up such a challenge, a review on radioactive ion sources was achieved and the investigation on ion source parameters was in particular focused on a plasma ion source through a R&D program.
Design of 1+ Ion Source Coupling First Design of the Resonant Ionization Laser Ion Source For the Multi-Mega Watt Target Station
07/07/2009 -Task : TASK 4
Author(s) :A. Olivier, F. Le Blanc, C. Lau

The realisation of next-generation ion sources suitable for the EURISOL multi-mega-watt (MMW) target station needs exhaustive studies and developments. An exhaustive review was carried out to evaluate the capability of the ion-sources to operate under the irradiation conditions of the MMW target station. In addition, selectivity must be taken into account to avoid the spread of unwanted radioactivity out of the target-ion-source system (TIS). These studies led to consider RILIS (Resonance Ionization Laser Ion Source) as the reference ion source for this target station.
DELIVERABLES

D1 Neutronic calculations report
No Milestones and expected results of this task Months due Months achieved Related documents
D1 /M1 Neutronic calculations 18 12 04-25-2007-0003
04-25-2007-0004

D2 Design report of Fission target and its integrations in the n-converter unit
No Milestones and expected results of this task Months due Months achieved Related documents
D2 /M2.1 Vacuum system design 17 24 04-25-2007-0002
D2 /M2.2 Preliminary target design parameters 18 21 04-25-2007-0009
04-25-2007-0010
D2 /M2.3 target cooling & outgassing study 21 25 04-25-2007-0007
D2 /M2.4 Choice of final target design parameters 36 48 04-25-2009-0011
D2 /M2.5 Costruction Ucx target prototype 36 50 04-25-2007-0005
D2 /M2.6 Target design & integration of the n-converter 46 52 04-25-2009-0015
04-25-2009-0016

D3 Fission target prototype
No Milestones and expected results of this task Months due Months achieved Related documents
D3 /M4.1 Off-line test UCx target 36 50 04-21-2009-0042
D3 /M4.2 On-line test UCx target 46 52 04-21-2009-0043
04-21-2009-0044

D4 Ion sources
No Milestones and expected results of this task Months due Months achieved Related documents
D4 /M3.1 Investigation on ion-source parameters 36 52 04-25-2009-0012
04-25-2009-0014
D4 /M3.2 Design of 1+ ion-source coupling 46 52 04-25-2009-0017

D5 Final report of the task activities
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