2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, 2008 1 EURISOL DS PROJECT Task#2: MULTI-MW TARGET DESIGN Y. Kadi On behalf of the.

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Presentation transcript:

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, EURISOL DS PROJECT Task#2: MULTI-MW TARGET DESIGN Y. Kadi On behalf of the EURISOL-DS Collaboration European Organization for Nuclear Research, CERN CH-1211 Geneva 23, SWITZERLAND Project supported by the European Commission under the FP6 “Research Infrastructure Action- Structuring the European Research Area” EURISOL-DS Project Contract no RIDS

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, EURISOL Target Stations RIB production:  Spallation-evaporation  Main: P-rich (10 to 15 elements below target material)  Residues: N-rich (A few elements below target material) Target materials:  Oxides  Carbides  Metal foils  Liquid metals 100 kW direct targets MMW fission target RIB production:  Fission  N-rich  Wide range Z = 10 to Z = 60 Target material:  U (baseline)  Th Converter:  Hg Participants: ~20 institutions Contributors: ~20 institutions EU suport (~30%): ~9.2 MEuros Duration: Tasks are active

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, EURISOL shall deliver beams 3 orders of magnitude higher intensity than in presently operating facilities. EURISOL-DS Targetry Challenges The originally proposed Hg – jet formation Diameter of jet 10 – 20 mm;Q=2.5 l/s; p>50bars!!!

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Compact Hg-loop with beam widow 1.Engineering study of the thermal hydraulics, fluid dynamics and construction materials of a window or window-free liquid-metal converter. 2.Study of an innovative waste management in the liquid Hg-loop e.g. by means of Hg distillation. 3.Engineering design and construction of a functional Hg-loop. 4.Off-line testing and validation of the thermal hydraulics and fluid dynamics. 5.Engineering design of the entire target station and its handling method Task#2 – Multi-MW Liquid Hg Target Deliverables: Confined transverse film windowless

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, PbBi Hg Neutron absorbing region Neutral balance boundary Neutron producing region PbBi Alternative – Neutron Balance

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, PbBi Alternative – Neutron Spectrum

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, º Coaxial Bend Target

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, 2008 Task#2 – Multi-MW Liquid Hg Target Hg converter and secondary fission targets

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, 2008 Task#4 – Fission Target

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Task#2 – 3D view of the fission target

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Fission Target Tube Hg inlet Hg outlet Hg Proton to Neutron converter MAFF Fission Target Integration

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, MAFF Fission Target Integration

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Body tube Multi-MW facility Layout

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, NEUTRON FLUX

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6,

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, FISSION DENSITY

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Task#2 – Radioactive Ions Production Radioactive isotopes Kr-90 Sn-132 Large RIB production for the proposed neutron-rich isotopes. Clear advantage in using natural uranium. Possibility of investigating the lower end of the terra incognita, e.g. Nd-157, Tb-167

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Radioactive Ions Production Isotope production (Isotope/cm 3 /s/MW of beam) Conventional Hg Target Hg Film Target UC 3 Targets: Natural Uranium (0.7% U-235) Density: 3 g/cm 3

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Power Densities Hg Beam Window More than one order of magnitude difference between the free surface Hg-J (~22 kW/cm 3 /MW) and the confined Hg targets (BLD, ~2 kW/cm 3 /MW) BDL and IS: Beam window suffering important power densities (~1 kW/cm 3 /MW → extra cooling plus radiation resistant material needed) Peak power densities similar to ESS and SNS

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Existing Hg – loop in Institute of Physics (under reconstruction)(parameters of EMP p=4 bars; Q~12l/s 1 – test section; 2 – Hg loop DN100; 3 – heat exchanger; 4 – flowmeter; 5 – supply tank; 6 –level meter; 7 – electromagnetic pump; 8 – heat exchanger; 9 – vacuum pump; 10 – argon vessel; M1…M3 – pressure meter; P – vacuum gauge; T1…T4 – thermocouple; V1…V6 – valve; VF – dosing valve; IPUL variantPSI variant Liquid Hg Loop for tests of target mock-ups and other components

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, TASK #2 – Liquid Hg IPUL

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, a – with rectangular cell inner structure b – with round cell inner structure c – with parallel separator inner structure Transverse Hg – film InGaSn test loop of transverse film target module a b c a b c Modules of transverse film injectors Test chambers P=3 bar; Q~1.5 l/s Experiments of Hg “curtain” in InGaSn Loop

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Liquid Hg Loop – Transverse Film

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Task#2 – Hg Waste Management (D2)

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, B) Activation of Hg  induced activity comparable to the research reactor +  emitters Hg B. Rapp et al. (CEA)

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Hf and Lu present as an oxide deposit on Hg were removed by contacting the liquid metal with oxide materials with a rough surface: Sintered corundum Molecular sieve Oxides stick to the surface of these materials Removal of Lu and Hf from CERN-Hg irradiated sample

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, A schematic layout for liquid Hg-target disposal strategy Extrapolation from laboratory scale to “industrial” scale still to be done D) Disposal of liquid Hg R. Moormann, Chiriki et al. (FZJ) Chemical stabilization of Hg as an inorganic compound, e.g. HgS, HgSe, HgO, Hg 2 Cl 2, HgCl 2

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Done In progress Finalized Planned In progress Task#2 – Milestone monitoring 48 52

2 nd Oxford-Princeton High-Powered Target Workshop, Y. KadiNovember 6, Thank you for your attention and to all contributors...