CATHI Marie Curie Initial Training Network Cryogenics, Accelerators and Targets at HIE-ISOLDE Target Unit Design Study SERENA CIMMINO(EN-STI/RBS)* * The research project has been supported by a Marie Curie Early Initial Training Network Fellowship of the European Community’s Seventh Programme under contract number (PITN-GA-2010- 264330-CATHI)
Outline Standard Temperature Calibration Outlook Target Neutron Cold Line – Alternative Container Converter Cooling Solution Study Optimization Design Study
* ISOLDE Target Unit Ohmic Heat (2000 ° C) Systems Vacuum (10 -7 mbar) Active Cooling • Flow rate: 180 L/h • Outlet Temperature: 24-25°C • Inlet Temperature: 15°C • Pressure: Approx. 5 bars Cold Line Feed- Through Ion Source Target Container S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
Standard Temperature Calibration
* Preserve the target during operation Calibration Chart Avoid excessive I cont V cont I source T cont T source stress [A] [A] [A] [ ° C] [ ° C] 450 3.01 270 1717 1294 500 3.38 270 1740 1294 550 3.68 270 1850 1294 5 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Precision Reproducibility Intensive Test Diagnostic Laboratoire national de Campaign Instrumentation Study métrologie et d’essais Calibration Cell 6 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Measurement Conditions Pyrometer to use Thermocouple Installation 7 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
Target Container Optimization
* Conventional ISOLDE Container Uniform Thermal Field Release Efficiency Increase Target Container Optimization 9 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* New Graphite Heater Prototype 10 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* New Graphite Heater Prototype Ohmic Heat / Containement Thermocouple 11 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Graphite Prototype Study Graphite Heater – Sigratherm Graphite Heater Tests and Shielding : Tests and Total Graphite Simulations Simulations Graphite Heater Graphite Heater Simulations Sigratherm Screen Tests Sigratherm screen Simulations Tests 12 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Parts Collection 13 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Prototype 14 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
Cold Line – Alternative Cooling Solution Study
* Water Leaks Investigation Electron Bombardment welding Brazing It resists up to 500 bar S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop 16
* Alternative Cooling Solutions No 750W to cooling dissipate Water Thermal Contact Flange Load Heat Flux Optimization Container heat 1370 [W] Source heat 1250 [W] Heat Pipes Integration Radiation 1 enclosure Film Coefficient 3500 W/m 2 Convection S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop 17
* Heat Flux Optimization Thickness Increase Connection Hot-Cold S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop 18
* Heat Pipes S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop 19
* Heat Pipes Integration Material: Copper nickel plated; Wick Type: Sintered; Fluid: water; Active Length: 100mm; Total Length: 130mm; Diameter: 10mm; Heat Transport 65 W; Thermal Resistance: 0.015 ~ 0.0769. S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop 20
* Feed Through Solution S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop 21
Neutron Converter Design Study
* Neutron Spallation Source Energy Deposition Neutron Converter Isobaric Contaminant Z=50, N = 82 double nuclear shell closure (132Sn) Z=28, N = 50 double nuclear shell closure (78Ni) 23 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* ISOLDE Conventional Converter Proton Distribution(p/cm 2 / μ C ) Neutron Distribution(n/cm 2 / μ C ) R. Catherall et al., NIMB, 204 (2003) 235. R. Luis et al., European Physics Journal A, 48 (2012) 90 24 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Simulation Validation 10 10 Zn Prototype In-Target Production 9 10 Zn Experimental Yield In Target Production Yield (1/µ) Rb Prototype In-Target Production 8 10 Rb Experimental Yield 7 10 6 10 5 10 4 10 3 10 2 10 60 70 80 90 100 110 Mass Number (A) A. Gottberg et al., to be submitted to NIM B 25 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Production Comparison 11 10 Cs conventional converter (2µA) Cd conventional converter (2µA) 10 10 -1 ] In Target Production Yield [s 9 10 8 10 7 10 6 10 5 10 4 10 3 10 100 105 110 115 120 125 130 135 140 145 150 155 Isotope Mass 26 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Production Comparison 11 10 Cs conventional converter (2µA) Cd conventional converter (2µA) 10 Cs prototype converter (2µA) 10 Cd prototype converter (2µA) In Target Production Yield [s -1 ] 9 10 8 10 7 10 6 10 5 10 4 10 3 10 100 105 110 115 120 125 130 135 140 145 150 155 Isotope Mass 27 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Design Study • Beam Energy: 500 MeV; • Beam Intensity: 100 μ A; • FWHM: 3mm; • Particles per second: 6.242 E14; • UCx density: 3.63g/cm3 28 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Production Comparison 12 10 Cs TRIUMF Standard (10µA) Cd TRIUMF Standard (10µA) -1 ] In Target Production Yield [s 11 10 10 10 9 10 8 10 7 10 105 110 115 120 125 130 135 140 145 150 Isotope Mass 29 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Production Comparison 12 10 Cs TRIUMF Standard (10µA) Cd TRIUMF Standard (10µA) Cs Converter Concept (100µA) Cd Converter Concept (100µA) -1 ] In Target Production Yield [s 11 10 10 10 9 10 8 10 7 10 105 110 115 120 125 130 135 140 145 150 Isotope Mass 30 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
* Preliminary Thermal Analysis 31 S.Cimmino - EN-STI/RBS - Target Unit Design Study – HIE ISOLDE Workshop
Outlook Neutron Calibration Converter Cellule Design Development Finalization Design Optimization Converter Graphyte Protoptype Test and Simulations Online Tests Experimental Tests
THANK YOU FOR THE ATTENTION
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