MLZ is a cooperation between:

Technische Universität München> Technische Universität MünchenHelmholtz-Zentrum Geesthacht> Helmholtz-Zentrum GeesthachtForschungszentrum Jülich> Forschungszentrum Jülich
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MLZ (eng)

Lichtenbergstr.1
85748 Garching

Sample Environment

The majority of neutron scattering experiments are not performed at ambient conditions. Most phenomena of interest become evident either at low or high temperatures, in electric or magnetic fields, at elevated temperatures and combinations of them. The sample environment group provides and operates devices to supply these parameters/conditions.

Operating as a user facility a key aspect of our work is to support instrument scientists and users regarding all sample environment issues such as setting up equipment, support when running experiments and maintenance. Furthermore we offer our expertise concerning the implantation of experimental setup.

Another key aspect is the development of new sample environment equipment. This involves continuous adoption and improvement of existing experimental techniques and devices as well as the development of novel equipment to cover the requirements of new scientific fields or to go beyond existing limits. In the framework of the European NMI3 program we collaborate in various R&D projects with European and international facilities.

A detailed description of the available equipment is shown on our webpages. Furthermore, specialized environments are available at the different instruments, please see the respective sections.

Activities

Low Temperatures

Most of our low temperature equipment is cryogen free. Our workhorse is the FFR II type sample tube cryostat (CCR) developed in-house. The temperatures range from 50 mK (provided by low temperature inserts) up to 1000 K (provided by high temperature center sticks). An additional 3rd stage version is now available for intermediate temperatures down to 1.3 K, with the sample located in exchange gas. Special requirements of our users or novel developments can be done due to in-house expertise.

In the framework of the NMI3 Joint Research Activity together with partners of other facilities we develop a compact, fast and dry top loading cryostat enabling fast and automated sample change.

In close collaboration with external companies we push the development of cryogen free or recondensing magnets. The systems provide field compensation to avoid any impact to other adjacent instruments or enable experiments using polarized neutrons. These dry magnets conserve resources and reduce costs up to 30%.

High Temperatures

We develop and manufacture high temperature furnaces in house. Our standard furnace using resistive Niobium heater elements provides temperatures from 200°C up to 2000°C. This type of furnace is characterized by high stability and precise control. The design can be easily adapted to the needs of a specific instrument.

Furthermore we manufacture a series of different furnaces to cover special applications.
A small and compact infrared furnace using halogen bulbs provides temperatures up to 1300°C. Based on the same principle, we manufactured a furnace to heat up samples at the STRESS-SPEC tension rig. For research on storage elements for electric energy, e.g. charging and discharging effects in batteries, we provide dedicated furnaces.

For POWTEX, a high-intensity time-of-flight diffractometer under construction, we develop a laser heated furnace using special laser optics and providing free neutron beam access in the upper hemisphere of the furnace body.

High Pressure

Currently we provide gas pressure equipment up to 0,7 MPa. In collaboration with our partners we are involved in current R&D high pressure projects.

In the framework of the European research program NMI3 we also work in this field closely with colleagues from other neutron scattering facilities.

Magnetic Fields

We provide magnetic fields up to 14 T with vertical and horizontal field orientation. We work out concepts and specifications of new magnets based on the requirements of our users. These projects are realized in close cooperation with magnet manufacturers worldwide.

Specialized Equipment

Specialzied equipment, e.g. for SANS-instruments operated by JCNS, is provided.

Contact

Heads

Dr. Jürgen Peters
Phone: +49 (0)89 289-14700
E-mail:

Dr. Alexander Weber
Phone: +49 (0)89 289-10726
E-mail:

Low Temperatures

Heiner Kolb
Phone: +49 (0)89 289-14407
E-mail:

High Temperatures

Milan Antic
Phone: +49 (0)89 289-11752
E-mail:

High Pressure

Andreas Buchner
Phone: +49 (0)89 289-14919
E-mail:

Herbert Weiß
Phone: +49 (0)89 289-14920
E-mail:

Magnetic Fields

Daniel Vujevic
Phone: +49 (0)89 289-10774
E-mail:

Herbert Weiß
Phone: +49 (0)89 289-14920
E-mail:

Specialized Equipment

Daniel Vujevic
Phone: +49 (0)89 289-10774
E-mail:

Gallery

CCR
CCR

Closed cycle refrigerator (CCR, right) with the newly developed universal control box (top left).

High temperature furnace at STRESS-SPEC
High temperature furnace at STRESS-SPEC

MLZ is a cooperation between:

Technische Universität München> Technische Universität MünchenHelmholtz-Zentrum Geesthacht> Helmholtz-Zentrum GeesthachtForschungszentrum Jülich> Forschungszentrum Jülich