Thermal stabilization of neutron Larmor diffractometers

Keller, T.; Tralmer, F.

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Thermal stabilization of neutron Larmor diffractometers

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Keller, T.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Keller, T., & Tralmer, F. (2017). Thermal stabilization of neutron Larmor diffractometers. Journal of Physics: Conference Series, 862: UNSP 012012.

Cite as: https://hdl.handle.net/21.11116/0000-000E-D272-4

Abstract

We report on the design of a support unit for the radio frequency (RF) coils of a Larmor diffractometer (LD) eliminating fluctuations of the Larmor phase resulting from thermal expansion of the support structures. The key component defining the spacing between the RF coils is a Zerodur bar with a very low thermal expansion coefficient (alpha = 7 x 10(-8) K-1). This support unit will allow for LD measurements on the 10(-6) accuracy level even if the ambient temperature is fluctuating.