Scientific-technical infrastructure for the research with neutrons - PowerPoint PPT Presentation

Scientific-technical infrastructure for the research with neutrons and prominent projects at Helmholtz-Zentrum Berlin Axel Rupp Helmholtz-Zentrum Berlin für Materialien und Energie

Outline • HZB Facility Overview – Large Scale Facilities – Neutron Instruments • Organisational Structure • Scientific-Technical Capabilities – User Service – Central Services • Recent and ongoing Projects – New Cold Source Moderator Cell – Neutron Guide Upgrade ⁞ • Project Management • Summary 2 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Large Scale Facilities at HZB HZB operates two large scale facilities for the investigation of matter which complement each other: Research reactor BER II Electron storage ring BESSY II  Neutrons  Photons (synchrotron radiation) 0.9Å <  < 30Å (cold source) 10pm (hard x-ray) <  < 1mm (THz) pulse lenghts 100fs; 2ps; 50ps Use: ○ Mainly neutron scattering resoIution 100pm ○ Chemical analysis 50 beamlines 3 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Research reactor BER II Commissioning (5 MW) 1973 Upgrade (10 MW) 1985 – 1991 Swimming pool reactor light water moderated 2 pools, each  3.5m  11m 10 14 neutrons cm -2 s -1 (core) Cold Source  long wavelengths for ○ e.g. soft matter ○ SANS, TOF, …. 9 beam holes (thermal) 9 neutron guides (cold) 18 neutron instruments 4 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Neutron Instruments Experimental Hall Instrumentation thermal neutrons 7 Diffractometers Neutron Guide Hall I 1 Triple-axis cold neutrons Spectrometer 2 Reflectometers NEAT- Building 3 SANS instruments 2 Instruments for stress studies 3 Tomographie / Radiographie instruments Neutron Guide 3 Instruments under Hall II construction cold neutrons 5 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Organisation Chart 6 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Scientific-Technical Infrastructure User Service Central Services Operation Reactor Accelerator BESSY Surveyor User Platform Networks & Storage Development Exp. Syst. Exper. Data Processing User Service CARESS Electronics Development Electronics Electronics Workshop Instrument Electronics Technical User Support Instrument M echanics Technical Design M anufacturing Research with Sample Environment Spallation Neutrons Detector Laboratory Neutron Optics Group 7 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Capabilities User Service Instrument Mechanics at BER II Sample Environment 8 (10) persons 10 technicians Operating a broad range of All mechanical work to operate equipment to provide different neutron instruments sample environments Maintenance of neutron instruments  Technical user support  Temperature T = 30 mK – 2000 K  Technical advice to scientists  Magnetic field up to B = 17 T  Pressure up to p = 1.5 GPa  Mutually compatible  Instrument Electronics at BER II Lab for Magnetic Measurements 2 engineers, 1 electrical mechanic Options: heat capacity, heat conduction, Servicing all electronic systems to magneto-caloric effect, magnetisation, operate neutron instruments resistivity, further under construction Maintenance of instrument electronics  DEGAS Technical user support  Combines neutron scattering with in-situ- Development of instrument electronics  gas adsorption measurements Technical advice to scientists  8 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Capabilities Central Services (I) Technical Design Manufacturing 26 mechanics, up to 20 apprentices 5 designers, 3 draughtsmen, 1 planning engineer, students Manufacturing and assembly of complex scientific apparatus Design of sophistcated (sub)units for experimental setups Service and component Complete engineering data  manufacture for radiation Documentation  protection areas Monitoring of manufacturing  Support of commissioning  Technologies: Support of the user service  • CNC machining Software: ● Solid Works (CAD-software) • Welding: (stainless) steel, aluminum ● COMSOL-Multiphysics (FE) • Laser welding • Laser cutting External processing of orders • Water jet cutting • Vacuum brazing Purchase of materials • Vacuum testing • Ultrasonic cleaning Education of students 9 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Capabilities Central Services (II) Electronics Detector Laboratory 5 scientists and engineers 3 development engineers, 5 electronic technicians Detector development Development of analog and digital BF 3 detectors, MSGC ( 157 GD/CsI converter) boards Setup and commissioning of Manufacture of electronic devices complete detection systems Installation and service of process Primary detectors  control systems Frontend electronics (amplifiers,  discriminators) Experiment Data Processing Interfaces for data aquisition  Software: DeLiDAQ, Q-MesyDAQ  5 (15) persons + students Development experiment systems User support for a faultless operation Development and servicing CARESS Advice to instrument scientists, Development and implementation of simulation calculations motor control systems 10 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

New Cold Source Moderator Cell Exchange of the conical beamtube planning phase 2006 - 2009 training 2009 – 2010 Improved moderator cell design „hot“ phase 2010 - 2012 MCNP optimized 50-60 % brilliance gain parameters: • cell-core distance • length of cylinder • moderator thickness 11 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Neutron Guide Upgrade  Total radiation increase by factor 20 Period: 2009 – March 2012   6 instead of 5 guides in NGH I Sandwich-type shielding (bPE + Fe)  Twice the total cross section  m=3 coating instead of 58 Ni (m=1.2)  Overall gain factor: 2 - 5  Tight-fitting enclosure  Higher radiation attenuation  Enhanced flexibility 12 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

Upgraded Cold TAS FLEXX Collimator ex- change system Virtual source Period: 2009 – Oct. 2012 (2013) Vertical guide changer (polariser or straight guide) Velocity Double-focussing selector PG monochromator Elliptical tapered guide section Improved NRSE option  Own neutron guide, end position  Neutron optics tailored to particular instrument needs +  Increased neutron flux  Increased wavelength range  Larger wavevector + energy transfer 13 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

NEAT Upgrade Project Period: 2010 – 2015  Novel Materials  Mapping of excitations in single crystals Upgrade of neutron  Chemical activity in biomolecules guide: x 5  Complex sample environments Larger detection angle coverage x 8 Position sensitive Non-magnetic detector New chopper system New building detectors with BF 3. chamber Successful first tests 14 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

High Field Magnet Period: 2007 – 2014 Hybrid magnet + infrastructure Central Field > 25 T (> 30) T Bore 50 mm horizontal Opening Angle Conical ends, 30° Power Resistive Insert 4 MW (8 MW) Field Homogeneity < 0.5% (20 mm x 20 mm Vol.) Operating Current 20 kA Magnetic Field of 13 T – 19 T Resistive Insert (4 MW / 8 MW) Magnetic Field of 13 T Supercond. Coil Height ~ 5 m Total Weight ~ 30 t Cold Mass (4.5 K) ~ 9 t 15 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012

High field magnet Period: 2007 – 2014 Challenges Design and Construction Series-Connected System:  SC coil (Cable-in-Conduit)  Resistive Bitter coil Operation  20 kA DC power supply  Helium refrigerator  High pressure cooling water  4 / 8 MW cooling power 16 Axel Rupp, Design and Engineering of Neutron Instruments Workshop, Rutherford Appleton Laboratory, Didcot, UK – 17-19 September 2012