Institute for High Field Magnetic Laboratory Dresden

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Coordinates: 51 ° 3 '46.44 "  N , 13 ° 56' 36.24"  O

Institute for High Field Magnetic Laboratory Dresden
Institute for High Field Magnetic Laboratory Dresden
Dresden high field laboratory at HZDR
Category: research Institute
Carrier: Free State of Saxony , Federal Ministry for Education and Research
Membership: European Magnetic Field Laboratory
Facility location: Helmholtz Center Dresden-Rossendorf in Dresden , district Rossendorf
Type of research: Materials research
Areas of expertise: Solid state physics , low temperature physics
Management: Joachim Wosnitza
Homepage: www.hzdr.de/hld

The Institute Hochfeld-Magnetlabor Dresden (HLD) (also: Hochfeldlabor ) in the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) conducts modern materials research in very high magnetic fields. The aim of the facility is to make magnetic fields of up to 100  Tesla usable for experiments. The research facility serves both own projects and external users who can apply with proposals for research in pulsed magnetic fields of up to 95 Tesla.

history

In 1999 the Dresden High Field Initiative applied to the Federal Ministry of Education and Research (BMBF) and the Saxon Ministry of Science and Art (SMWK) to set up the high-field magnetic laboratory . The basic funding was approved on the recommendation of the Science Council : The investment costs of 24.5 million euros were shared equally by the federal government and the Free State of Saxony.

Construction of the high-field laboratory on the HZDR site began in 2003, and the institute was officially founded in the following year under the direction of Joachim Wosnitza . In 2006, what was then the world's largest capacitor bank was put into operation to provide the high magnetic current required. After the completion of the facility, user operation began in 2007.

Due to high user demand, the high-field magnet laboratory received an extension with a second capacitor bank in 2013. In addition, the extension houses six more heavily shielded experimental areas (called pulse cells), of which a total of ten are available.

In 2015, the Dresden Hochfeld-Magnetlabor became one of the three founding members of the European Magnetic Field Laboratory (EMFL), a Europe-wide association of facilities for research with strong magnetic fields.

Investments

The first of two capacitor banks at the Dresden high-field magnet laboratory

The Dresden High-Field Magnetic Laboratory operates specially developed magnetic coils through which strong current pulses flow and can thus briefly generate magnetic fields with a maximum magnetic flux density of up to 95  Tesla . This makes them one of the world's most powerful reusable spools.

The duration of the up to 95 Tesla strong pulses is about 10 ms. The sample space in which the experiment is placed inside the coil has a diameter of 1.6 centimeters. Magnetic fields of up to 70 Tesla can be generated for up to 150 ms in a sample space with a diameter of 2.4 centimeters.

The magnetic coils used are developed in-house at the Dresden High Field Magnetic Laboratory. Because of the high magnetic pressure , the wire windings of these coils must be wrapped with an extremely tear-resistant synthetic fiber. The electrical energy of up to 50 MJ required for the current pulses is made available with the help of the world's largest capacitor bank specially developed for this laboratory.

research

First and foremost, the high magnetic field laboratory in Dresden investigates the electronic properties of metallic materials in high magnetic fields. The behavior of semiconductors, magnetic materials and superconductors under extreme conditions can be studied.

The pulse durations are sufficient for resistance , ultrasound and NMR measurements. In particular, the free electron laser (FEL) of the neighboring superconducting electron accelerator ELBE can be used for magneto-optical experiments in the infrared spectral range.

Particularly of current interest are exotic superconductivity states, strongly correlated electron systems, low-dimensional spin systems and topological materials or nanostructures.

User operation

Applications from research groups to use the magnets in the Dresden High Field Magnetic Laboratory are evaluated twice a year by a committee for their scientific potential as part of the EMFL user program. The measurement times are finally assigned on the basis of the committee's recommendations.

The Dresden high-field magnet laboratory provides users with four magnet assemblies with different properties, each of which can be installed at one of the ten experiment stations (called pulse cells). It is possible for up to four groups to conduct experiments at the same time.

The Helmholtz-Zentrum Dresden-Rossendorf has a guest house and an international office available for users and visiting researchers.

Cooperations

The Dresden High Field Magnetic Laboratory works with numerous research institutions. In addition to institutions from all over Germany, this includes in particular on site in Dresden:

Together with the Dutch High Field Magnetic Laboratory (HFML) in Nijmegen and the French Laboratoire des Champs Magnétiques Intenses (LNCMI) with locations in Grenoble and Toulouse , the Dresden High Field Magnetic Laboratory is one of the founding members of the European Magnetic Field Laboratory (EMFL). The aim of this EU project is to address new users for the magnet laboratories involved and to expand cooperation in administration, infrastructure and communication.

Web links

Footnotes

  1. ↑ https://www.hzdr.de/db/Cms?pNid=428
  2. ↑ Helmholtz Center Dresden-Rossendorf: High-Field Magnetic Laboratory Dresden
  3. ↑ Helmholtz-Zentrum Dresden-Rossendorf: High-Field Magnetic Laboratory Dresden: User Program
  4. ^ A b Helmholtz-Zentrum Dresden-Rossendorf: History of the high-field magnetic laboratory in Dresden
  5. ↑ Helmholtz Center Dresden-Rossendorf: Press release: Science needs space: Dresden record laboratory will be inaugurated on December 13, 2013
  6. ↑ a b European Magnetic Field Laboratory: Members ( Memento from December 22, 2017 in the Internet Archive )
  7. ↑ a b Helmholtz Center Dresden-Rossendorf: High Field Magnetic Laboratory Dresden: Magnet Specification
  8. ^ Helmholtz Center Dresden-Rossendorf: High-field magnetic laboratory Dresden: Experimental Techniques
  9. ^ Helmholtz-Zentrum Dresden-Rossendorf: Hochfeld-Magnetlabor Dresden: Research on new materials
  10. ↑ European Magnetic Field Laboratory: How to Become a User ( Memento from December 22, 2017 in the Internet Archive )
  11. ^ Helmholtz-Zentrum Dresden-Rossendorf: Hochfeld-Magnetlabor Dresden: Support for Users
  12. ↑ Helmholtz-Zentrum Dresden-Rossendorf: Press release: New EU project brings Europe's magnet researchers together from February 24, 2011
  1. ↑ With magnetic coils, the destruction of which is accepted, such as flux compression generators , much higher flux densities can be achieved.