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High efficiency neutron spectrometer optimized for investigations under extreme conditions

English title High efficiency neutron spectrometer optimized for investigations under extreme conditions
Applicant Ronnow Henrik M.
Number 144972
Funding scheme R'EQUIP
Research institution Laboratoire de magnétisme quantique EPFL - SB - IPMC - LQM
Institution of higher education EPF Lausanne - EPFL
Main discipline Condensed Matter Physics
Start/End 01.01.2014 - 31.12.2018
Approved amount 600'000.00
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All Disciplines (2)

Discipline
Condensed Matter Physics
Material Sciences

Keywords (6)

High pressure science; Magnetism; Strongly correlated electrons; Superconductivity; High magnetic fields; Neutron Scattering

Lay Summary (German)

Lead
Ein neuartiges Neutronenspektrometer CAMEA wird an der Schweizer Spallationsneutronenquelle SINQ installiert als Zusammenarbeit des Paul Scherrer Instituts mit der EPF Lausanne. Es wird bei der Untersuchung von Materialien mit neuen elektronischen Eigenschaften zum Einsatz kommen.
Lay summary

Ein neuartiges Neutronenspektrometer CAMEA wird an der Schweizer Spallationsneutronenquelle SINQ installiert. Es wird als Zusammenarbeit zwischen dem Labor fuer Neutronenstreung am Paul Scherrer Instituts und dem Labor fuer Quantenmagnetismus der EPF Lausanne entwickelt. Es wird bei der Untersuchung von Materialien mit neuen elektronischen Eigenschaften zum Einsatz kommen.

Das Instrument besteht aus vertikal fokussierenden Analysatoren, die eine um einen Faktor 50 hoehere Detektionsrate fuer Neutronen ermoeglichen im Vergleich zu anderen, bestehenden Spektrometern. Der Teil des einfallenden Strahls wird auch optimiert werden und einen weiteren Faktor 10 liefern.

CAMEA wird neue, wegweisende Experimente ermoeglichen z.B. an sehr kleinen Proben, in sehr hohen Magnetfeldern (50000x das Erdmagnetfeld), bei Temperaturen nahe dem absoluten Nullpunkt und bei Druecken, die dem des Erdmantels entsprechen.

Direct link to Lay Summary Last update: 04.02.2013

Lay Summary (English)

Lead
CAMEA a novel neutron scattering spectrometer for fundamental and applied research in advanced electronic materials - will be installed at the Swiss Spallation Neutron Source at Paul Scherrer Institut in collaboration with Ecole Polytechnique Federale de Lausanne
Lay summary

A novel neutron scattering spectrometer - CAMEA - will be constructed the Swiss Spallation Neutron Source in a collaboration Laboratory for Neutron Scattering at Pauls Scherrer Institut and Laboratory for Quantum Magnetism at Ecole Polytechnique Federale de Lausanne.

The instrument contain vertically focusing analysers with 50 times higher neutron detection rate than the existing spectrometer, and the inocming neutron delivery will be upgraded to yield 10 times higher flux.

CAMEA will enable frontier research in materials with emerging electronic properties. It can be used with small samples, magnetic fields exceeding 50000 times the earth magnetic field, temperatures fraction of a degree above absolute zero, and pressures comparable to those in the earth mantle.

Direct link to Lay Summary Last update: 04.02.2013

Responsible applicant and co-applicants

Publications

Publication
A combined radial collimator and cooled beryllium filter for neutron scattering
Groitl Felix, Rantsiou Emmanouela, Bartkowiak Marek, Filges Uwe, Graf Dieter, Niedermayer Christof, Rueegg Christian, Ronnow Henrik M. (2016), A combined radial collimator and cooled beryllium filter for neutron scattering, in NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND, 819, 99-103.
CAMEA-A novel multiplexing analyzer for neutron spectroscopy
Groitl Felix, Graf Dieter, Birk Jonas Okkels, Marko Marton, Bartkowiak Marek, Filges Uwe, Niedermayer Christof, Rueegg Christian, Ronnow Henrik M. (2016), CAMEA-A novel multiplexing analyzer for neutron spectroscopy, in REVIEW OF SCIENTIFIC INSTRUMENTS, 87(3), 035109.
Experimental characterization of a prototype secondary spectrometer for vertically scattering multiple energy analysis at cold-neutron triple axis spectrometers
Toft-Petersen Rasmus, Groitl Felix, Kure Mathias, Lim Joshua, Cermak Petr, Alimov Svyatoslav, Wilpert Thomas, Quintero-Castro Diana, Niedermayer Christof, Schneidewind Astrid, Habicht Klaus (2016), Experimental characterization of a prototype secondary spectrometer for vertically scattering multiple energy analysis at cold-neutron triple axis spectrometers, in NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND, 830, 338-344.

Collaboration

Group / person Country
Types of collaboration
Denmark Technical University, Denmark Denmark (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Copenhagen University Denmark (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Exchange of personnel

Associated projects

Number Title Start Funding scheme
138018 Magneto-electric interactions, excitations and phase transitions 01.11.2012 Project funding (Div. I-III)
162626 Frustration in Quantum and Classical Magnets 01.12.2015 Project funding (Div. I-III)
133815 Setup for studies of quantum phenomena in condensed matter systems at ultra-low temperatures in magnetic vector fields 01.04.2012 R'EQUIP
166298 Quantum Magnetism - Checkerboards, Skyrmions and Dipoles 01.06.2016 Project funding (Div. I-III)
132877 Magnetic Excitations in Low-Dimensional Arrays of Quantum Spins 01.01.2011 Project funding (Div. I-III)
130522 Quantum Magnetism - Dimer Physics and Dipolar Criticality 01.04.2010 Project funding (Div. I-III)
140862 Quantum Frustration in Model Magnets 01.07.2012 Project funding (Div. I-III)
182536 New structures and dynamics emerging from frustration 01.12.2018 Project funding (Div. I-III)
146870 Quantum Magnetism - Spinons, Skyrmions and Dipoles 01.04.2013 Project funding (Div. I-III)
149847 Salty ices and ice clathrates under extreme conditions 01.09.2014 Project funding (Div. I-III)
162110 Harnessing Molecular Crystals for Quantum Magnets and Elucidating Quantum Critical Physics 01.03.2016 Bilateral programmes
160765 Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials 01.01.2016 Sinergia
141962 Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials 01.01.2013 Sinergia
126751 Nanofabricated devices based on intrinsically layered correlated electron materials 01.12.2009 Project funding (Div. I-III)

Abstract

We propose to build a novel neutron scattering spectrometer at the SINQ neutron source at the Paul Scherrer Institute (PSI). The project includes: 1) A secondary spectrometer - CAMEA - based on a novel concept by Prof. H. M. Ronnow, which offers up to 100 times more efficient neutron detection. It is this secondary spectrometer that we request funded by R'Equip.2) Upgrade of the primary spectrometer - monochromator, and the neutron guide system, which will bring a factor of 12 higher neutron flux. This upgrade will be undertaken by PSI.Combined the 3 orders of magnitude gain in neutron detection efficiency will result in a state-of-the-art spectrometer, which will be particularly suited for parametric studies under extreme conditions - high magnetic fields, very high pressures, and small samples.The applicant group proposes a specific list of frontier experiments in the field of strongly correlated electron materials that will become possible with the new spectrometer. But the instrument will become part of the Swiss user facility for neutron research and as such benefit scientists from all of Switzerland and international collaborators.
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