The measurement and control system for 920 MHz NMR magnet

Author

Miki, Takashi ; Ito, Satoshi ; Hamada, Mamoru ; Yoshikawa, Masatoshi ; Sato, Akio ; Kiyoshi, Tsukasa ; Wada, Hitoshi ; Matsumoto, Fumiaki ; Nagai, Hideo ; Noguchi, Takashi ; Fukui, Shigeo

Author_Institution

Kobe Stell Ltd., Hyogo, Japan

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

1742

Lastpage

1745

Abstract

After the successful test at the Takasago factory of Kobe Steel Ltd (KSL). 920 MHz magnet was transported and installed in Tsukuba Magnet Laboratory (TML), NIMS in April, 2002. To achieve a quick energization and long term operation with a minimum number of operators, the cryostat was equipped with an automated control and monitoring system. During the cooling process below 4.2 K and the energization procedure up to 21.6 T, the temperature of the magnet and He II bath was controlled automatically. Since the all installation procedure has completed in July 2002, the magnet has been continuously cooled to 1.545 K and the temperature variation has been kept within 0.01 K for over a year.

Keywords

NMR spectrometers; cooling; cryostats; superconducting magnets; temperature control; temperature measurement; 1.545 K; 920 MHz; CAMAC; He; He II bath; NMR magnet; NMR spectrometer; automated control and monitoring system; control system; cooling process; cryostat; energization; magnet temperature; measurement system; superconducting magnet; temperature variation; Automatic control; Computerized monitoring; Control systems; Cooling; Helium; Laboratories; Nuclear magnetic resonance; Production facilities; Steel; Testing; CAMAC; NMR spectrometer; cryostat; superconducting magnet;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.831065

Filename

1325143