The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2015
Filed:
Mar. 03, 2011
Qiuliang Wang, Beijing, CN;
Yinming Dai, Beijing, CN;
Baozhi Zhao, Beijing, CN;
Xinning HU, Beijing, CN;
Luguang Yan, Beijing, CN;
Housheng Wang, Beijing, CN;
Shunzhong Chen, Beijing, CN;
Qiuliang Wang, Beijing, CN;
Yinming Dai, Beijing, CN;
Baozhi Zhao, Beijing, CN;
Xinning Hu, Beijing, CN;
Luguang Yan, Beijing, CN;
Housheng Wang, Beijing, CN;
Shunzhong Chen, Beijing, CN;
Abstract
A superconducting magnet system for nuclear magnetic resonance with a high magnetic field and a high degree of homogeneity of magnetic field is provided. The system comprises a main coil and a magnetic field homogeneity compensating coil having a combination of a forward current and a reverse current, and is composed of 24 superconducting coils formed by winding NbTi/Cu low-temperature superconducting wires. The system can produce a magnetic field of 9.4 T within a room-temperature space of 800 mm and can obtain a degree of non-homogeneity of magnetic field less than 0.1 ppm within a spherical volume of 300 mm. The system is equipped with a superconducting magnet inside, and a low-temperature vessel for liquid helium provides a low-temperature environment of 4K which is required for the normal operation of the superconducting magnet. A ferro-magnetic shielding system enables the system to have a good electromagnetic compatibility.