No. II/14 - 30 June 2014
PSI photon, neutron and muon user facilities newsletter
I have the pleasure to announce the second call for applications for the PSI-FELLOW programme. This EU co-financed funding program addresses international postdocs from all over the world and offers 30 successful postdoc applicants a two years contract (2015-2016) and the unique opportunity to perform their innovative project in one of the four attractive scientific fields tackled at PSI: i) materials and matter, ii) life-sciences, iii) energy and environment and iv) accelerator technologies.
The application has to be made together with a senior scientist at PSI, who will act as the fellow's mentor. The list of mentors and open themes is published here. Please get in contact with your potential mentor and discuss the eligibility of your application. The project proposal together with CV and two reference letters has to be submitted not later than by August 4, 2014. For more details about the application process please consult the homepage of the PSI-FELLOW programme.
The PSI-FELLOW management team wishes you a successful application and looks forward to welcome you at PSI in your new position next year.
Stefan Müller, science coordinator SYN department and head of 'PSI-FELLOW' programme at PSI
SLS - Human Health: Phase contrast improves mammography
New imaging technologyZhentian Wang et al, Nature Communications, published online 15th May 2014, DOI: 10.1038/ncomms4797
Phase contrast X-ray imaging has enabled researchers at ETH Zurich, the Paul Scherrer Institute (PSI) and the Kantonsspital Baden to perform mammographic imaging that allows greater precision in the assessment of breast cancer and its precursors. The technique could improve biopsy diagnostics and follow-up.
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SINQ - The physics of spin and electric dipoles in multiferroics
Spin-Nematic Interaction in the Multiferroic Compound Ba2CoGe2O7M. Soda et al, Physical Review Letters 112, 127205 (2014), DOI: 10.1103/PhysRevLett.112.127205
We demonstrate the existence of the spin-nematic interactions in an easy-plane type antiferromagnet Ba2CoGe2O7 by exploring the magnetic anisotropy and spin dynamics. The combination of neutron scattering and magnetic susceptibility measurements reveals that the origin of the in-plane anisotropy is an antiferro-type interaction of the spin-nematic operator. The relation between the nematic operator and the electric polarization in the ligand symmetry of this compound is presented. The introduction of the spin-nematic interaction is useful to understand the physics of spin and electric dipole in multiferroic compounds.
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SμS - 1D-Magnetism: Field Induced Quantum Phase Transitions
Controlling Magnetic Order and Quantum Disorder in Molecule-Based MagnetsT. Lancaster et al, Physical Review Letters 112, 207201 (2014), DOI: 10.1103/PhysRevLett.112.207201
We investigate the structural and magnetic properties of two molecule-based magnets synthesized from the same starting components. Their different structural motifs promote contrasting exchange pathways and consequently lead to markedly different magnetic ground states. Through examination of their structural and magnetic properties we show that [Cu(pyz)(H2O)(gly)2](ClO4)2 may be considered a quasi-one- dimensional quantum Heisenberg antiferromagnet whereas the related compound [Cu(pyz)(gly)](ClO4), which is formed from dimers of antiferromagnetically interacting Cu2+ spins, remains disordered down to at least 0.03 K in zero field but shows a field-temperature phase diagram reminiscent of that seen in materials showing a Bose-Einstein condensation of magnons.
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SwissFEL - Undulator U15
7 Å resolution in protein two-dimensional-crystal X-ray diffraction at Linac Coherent Light SourceB. Pedrini et al, Phil. Trans. R. Soc. B 2014 369, 20130500, published 9 June 2014, DOI:10.1098/rstb.2013.0500
Membrane proteins arranged as two-dimensional (2D) crystals in the lipid environment provide close-to-physiological structural information, which is essential for understanding the molecular mechanisms of protein function. Previously, X-ray diffraction from individual 2D crystals did not represent a suitable investigation tool because of radiation damage. That the recently available ultrashort pulses from X-ray Free Electron Lasers (X-FELs) provide a mean to outrun the damage is now well established for the 3D crystal case. This is now demonstrated also for the 2D crystal case, within the work of an international collaboration led by Matthias Frank from the Lavrence Livermore National Laboratory (CA, USA), to which scientists from PSI had the opportunity to participate and contribute. We report on the measurements performed in May 2013 at the Coherent Diffraction Imaging station of the Linac Coherent Light Source X-FEL, and using bacteriorhodopsin 2D crystals as samples.
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JUSAP - The Joint Users Association
The new European Framework Program Horizon2020 may discontinue the financial support of transnational access (TNA) to large scale facilities. The European Synchrotron User Organisation ESUO, has expressed enormous concern over this development. The ESUO has thus launched several lobbying initiatives for the second call 2016:
i) a letter of concern entitled 'The benefit of the European User Community from transnational access to national radiation facilities' has been accepted for publication (Journal of Synchrotron Radiation 21, 638–639 (2014)).
ii) at a recent action group meeting the current draft of a brochure for the promotion of TNA activities written by science writer, Dirk Rathje, was presented. The final draft of the brochure, foreseen to be ready by the end of July 2014, will be sent to all synchrotron facilities, together with an accompanying letter asking for permission to publish. A recommendation was also made to contact the neutron community to coordinate a response. The printed version of the brochure will be ready for further distribution by mid September 2014.
iii) a decision was taken to lobby national program committee members for the promotion of a possible TNA proposal in Horizon 2020, with more added emphasis on networking and joint research activities. This lobbying initiative will be the main topic of the 7th ESUO annual meeting.
Sarah Dunsiger (JUSAP chair) and Annick Froideval
New calls for proposalsSLS: PX-beamlines
deadline: October 15, 2014
SLS: non-PX beamlines
deadline: September 15, 2014
deadline: November 15, 2014
deadline: December 2014
An overview about all proposal submission deadlines of the PSI facilities can be obtained here.
Facility newsSLS: Tomographic nano-imaging reaches 16 nm isotropic 3D resolution
OMNY (tOMography Nano crYo stage) is an ongoing instrumentation project at the SLS implementing an endstation for tomographic nano-imaging at 10 nm resolution in 3D using ptychography. When complete, OMNY will image biomaterial and materials science samples at cryogenic temperatures in an ultra-high vacuum environment. Cryogenic sample fixation will permit measurements of biological samples such as soft tissue and entire cells close to their native state without chemical fixation. A prototype system called OMNI (tOMography Nano Imaging) operating at room temperature and atmospheric pressure has now reached a world record isotropic 3D resolution of 16 nm on a nanoporous test structure. OMNI routinely reaches 30 nm 3D resolution on many types of scientific samples that are radiation hard and is available to users at the cSAXS beamline. Please have a look at the original publication.
SINQ: Instruments for the ESS
An instrumentation consortium including laboratories at PSI and EPF Lausanne and further partner institutes in Denmark proposed four instruments for construction at the European Spallation Source (ESS) and received positive evaluation by the ESS Scientific Advisory Council. An extreme environment spectrometer, a pioneering reflectometer optimized for functional thin-film devices, a small-angle neuron scattering instrument for biology, and a diffractometer for multiple-length scales structural studies will offer unprecedented experimental opportunities to the Swiss and international user community of the ESS. A fifth neutron-imaging instrument with Swiss contribution was selected for construction already last year. We thank the Swiss State Secretariat for Education, Research and Innovation (SERI) for supporting ESS activities in Switzerland.
SμS: Recent μSR Conference
The 13th International Conference on Muon Spin Rotation Relaxation and Resonance (μSR2014), organized by PSI in collaboration with the University of Zürich and the University of Fribourg, closed on June 6th in Grindelwald. We would like to thank the more than 160 participants from 19 countries for their 227 contributions and the interesting and stimulating discussions during day and evening sessions. During the conference Roberto De Renzi from the University of Parma was awarded the 2014 Yamazaki Prize for muon science by the International Society for Muon Spin Spectroscopy (ISMS) for his sustained and exceptional contributions to the development of μSR. In addition, Thomas Prokscha, head of the LEM group, was chosen as president elect of the ISMS for the next three years as well as Martin Mansson, user of the PSI facility, elected as Vice-President Europe of the Society.
Upcoming eventsPSI Powder Diffraction School 2014
July 1-4, 2014, PSI Villigen, Switzerland
International Conference on Highly Frustrated Magnetism 2014
July 7-11, 2014, Cambridge, UK
Neutrons and Food 2014
July 9-11, 2014, Paris, France
ICSOS'11: 11th International Conference on the Structure of Surfaces
July 21-25, 2014, Coventry, UK
13th PSI Summer School on Condensed Matter Research: Exploring time, energy and length scales in condensed matter
August 9-15, 2014, Zug, Switzerland
August 25-29, 2014, Basel, Switzerland
18th JCNS Laboratory Course Neutron Scattering
September 1-12, 2014, Jülich and Garching, Germany
SGK/SSCr Annual Meeting 2014
September 8, 2014, Dübendorf, Switzerland
Science at FELs
September 14-17, 2014, PSI Villigen, Switzerland
Deutsche Tagung fuer Forschung mit Synchrotronstrahlung, Neutronen und Ionenstrahlen an Grossgeräten 2014
September 21-23, 2014, Bonn, Germany
WCNR10: 10th World Conference on Radiography
October 5-10, 2014, Grindelwald, Switzerland