US 12,379,436 B2
Active reduction of temperature induced shim drift in NMR magnet systems
Robert Schauwecker, Zürich (CH); Pierre-Alain Bovier, Zürich (CH); Michele Zaffalon, Zürich (CH); Nicolas Freytag, Binz (CH); and Roger Meister, Hinteregg (CH)
Filed by Bruker Switzerland AG, Fällanden (CH)
Filed on Jul. 20, 2023, as Appl. No. 18/355,534.
Claims priority of application No. 10 2022 207 489 (DE), filed on Jul. 21, 2022.
Prior Publication US 2024/0133985 A1, Apr. 25, 2024
Prior Publication US 2024/0230807 A9, Jul. 11, 2024
Int. Cl. G01R 33/38 (2006.01); G01L 1/24 (2006.01); G01R 33/387 (2006.01)
CPC G01R 33/3804 (2013.01) [G01L 1/24 (2013.01); G01R 33/387 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An NMR apparatus having a magnet coil system for generating a homogeneous magnetic field, the apparatus comprising:
a superconducting magnet arranged within a vacuum vessel in the cold region of a cryostat,
a shim system containing shim elements arranged outside the vacuum vessel,
a magnet suspension via which the superconducting magnet has a first mechanical connection point to the vacuum vessel,
a positioning element via which the shim system has a second mechanical connection point to the vacuum vessel, and
at least one regulating element located on a portion of a first path along the vacuum vessel from the first mechanical connection point to the second mechanical connection point and/or on a portion of a second path along the positioning element from the second mechanical connection point to the shim system, the at least one regulating element adjusting a strain of the vacuum vessel and/or a strain of the positioning element along the path portion on which it is located.