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UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 People: Senior Researchers.

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Presentation on theme: "UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 People: Senior Researchers."— Presentation transcript:

1 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 People: Senior Researchers (responsible for activity lines): Eduardo Alves (Head of Lab) Adelaide Pedro de Jesus Luís Cerqueira Alves Miguel Reis Nuno Barradas Rui Coelho da Silva Teresa Pinheiro Ulrich Wahl ITN/CFNUL Ion Beam Laboratory itn.pt/

2 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 ITN/CFNUL Ion Beam Laboratory Van de Graaff 2.5 MV DanFisik Implanter 210 kV General Ionex Cockroft-Walton tandetron 3 MV

3 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 Van de Graaff 2.5 MV, 10 A (protons); H, He ions Lines: PIXE/Nuclear Reactions RBS, Chan, ERDA - probe PIXE analysis of environmental, biomedical, material science, geological, art,….. samples Nuclear Reactions for astrophysics Development of a PIGE methodology Advanced Materials: Wide bandgap semiconductors and oxides Nuclear fusion reactor materials and mineralogical samples. Multiple quantum wells and quantum dots. Materials Science Biomedicine Environment Archaeometry and Art Mineralogy

4 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 ~100 pA for PIXE and RBS (Res. ~ 3 4 µm 2 ) Spatial Resolution ~1 fA transmission work (Res. 1 1 µm 2 ) Oxford Microbeams triplet system with OMDAQ and DAN32 software STIM – Scanning Transmission Ion Microscopy CSTIM – Channeled STIM IBIC – Ion Beam Induced Charge IBIL – Ion Beam Induced Luminescence

5 UL UNIVERSIDADE DE LISBOA Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 Advanced Materials for Nuclear Fusion Reactors 6 Li(n, ) 3 H Li ceramic breeders ITER International Thermonuclear Experimental Reactor Structure Stainless steels SiC composites Be as neutron multiplier 9 Be(n,2n)2 Impurities - generation of long-lived isotopes Chemical reactions Objectives CENTRO DE FÍSICA NUCLEAR

6 UL UNIVERSIDADE DE LISBOA Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 Advanced Materials for Nuclear Fusion Reactors CENTRO DE FÍSICA NUCLEAR Titanium Beryllides Objectives: Structural characterisation. Oxidation after annealing in air at 800º C. 530 µm Ti Fe

7 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 SbGaIn Max. Min µm Crystal quality Manufacturing Control ThermoPhotoVoltaic cell

8 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 FeCu PbZn Ancient stained glass Glass and paint composition Corrosion studies Cross section analysis

9 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 External Microbeam end- station mm mm 1 - exit nozzle nm thick Si 3 N 4 membrane 2 - X-ray detector 3 - RBS detector 4 - microscope 5 - vacuum chamber 490 µm 500 µm 100 µm Horizontal Gaussian FWHM = 70 µm Vertical Gaussian FWHM = 75 µm Going on Developments

10 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 General Ionex Cockroft-Walton tandetron 3MV NEC Alphatros ion source for He beams Negative ion direct-extraction Duoplasmatron ion source for H- beams. HICONEX Cs beam multielement negative ion source

11 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September eV resolution (Transition Edge Superconductor -TES) detector Tandem new lines of activity Molecular speciation from PIXE spectra Heavy Ion Elastic Recoil Detection analyses (HIERDA) – A ToF system is under construction to profile light ions using either Cl or I beams.

12 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 Tandem new lines of activity

13 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 Tandem new lines of activity HICONEX Cs microbeam ( m) multielement ("AUSTRALIS") negative ion source C Conventional HICONEX Cs beam multielement negative ion source Two beamlines for AMS: A) for 14 C dating: 2 off-center Faraday cups for parallel current measurement of 12 C3+ and 13 C3+, while the 14 C3+ detection is by means of an electrostatic analyzer and a gas proportional counter. B) Heavy ion ("AUSTRALIS") beamline: The magnet is able of analyzing 6+ (or higher charge state) ions of all elements up to U at 2.5 MV terminal voltage. Sequential analysis of different isotopes (around +-3% of center mass) in the magnet is possible by means of the "fast bouncing" technique, i.e. by means of electrostatic deflectors which can be switched at >10 ms time intervals

14 UL UNIVERSIDADE DE LISBOA CENTRO DE FÍSICA NUCLEAR Nupecc Workshpo on Small-Scale Accelerator Faccilities, Crete 7-8 September 2007 Tandem new lines of activity Astrophysics Programme Feasibility Study of AMS for the reaction: 51 V( 3 He, n) 53 Mn Carbon burning processes (collab with Claus Rolfs) Particle Gamma Reaction product (AMS) Detection High current ion source Reaction beam line Each case is a new case


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