JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Quench analysis and protection circuit design of a superconducting magnet system for RISP 28GHz ECR ion source
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Quench analysis and protection circuit design of a superconducting magnet system for RISP 28GHz ECR ion source
Song, S.; Ko, T.K.; Choi, S.; Ahn, M.C.;
  PDF(new window)
 Abstract
This paper presents the developed quench analysis code and protection circuit design for a superconducting magnet system of 28GHz electron cyclotron resonance (ECR) ion source. The superconducting magnet is composed of a hexapole magnet and four solenoid magnets located outside of the hexapole one. All magnets are wound with NbTi composite wire and impregnated by epoxy. By using the developed characteristic analysis code, the normal zone resistance, decaying current and temperature rising can be estimated during quench. Also, the stored magnetic energy is successfully consumed from the series resistor of the designed protection circuit. The analytical results are compared with the experimental results to verify the developed quench analysis code and protection circuit.
 Keywords
ECR ion source;protection circuit;quench analysis;superconducting magnet;
 Language
English
 Cited by
 References
1.
S. Song, T. K. Ko, S. Choi, I. S. Hong, H. Kang and M. C. Ahn, "Quench Analysis of a Superconducting Magnet for RISP 28 GHz ECR Ion Source," IEEE Trans. Magn., vol. 25, no. 3, pp. xxx, 2015.

2.
H. Lee et al., "Electromagnetic characteristics of a superconducting magnet for the 28 GHz ECR ion source according to the series resistance of the protection circuit," J. Kor. Phys. Soc. vol. 67, no. 8, pp. 1430-1434, 2015. crossref(new window)

3.
G. Baccaglioni, M. Canali, L. Rossi and M. Sorbi, "Measurements of Quench Velocity in Adiabatic NbTi and NbSn Coils. Comparison between Theory and Experiments in Small Model Coils and Large Magnets," IEEE Trans. Magn., vol. 30, no. 4, pp. 2677-2680, 1994. crossref(new window)

4.
C. H. Joshi and Y. Iwasa, "Prediction of current decay and terminal voltages in adiabatic superconducting magnets," Cryogenics, vol. 29, pp. 157-167, 1989. crossref(new window)

5.
C. H. Joshi, J. E. C. Williams and Y. Iwasa, "Quenching in Epoxy-Impregnated Superconducting Solenoids: Prediction and Verification," IEEE Trans. Magn., MAG-23, no. 2, pp. 922-925, 1987.

6.
A. Ishiyama and Y. Iwasa, "Quench propagation velocities in an epoxy-impregnated Nb3Sn superconducting winding model," IEEE Trans. Magn., vol. 24, no. 2, pp. 1194-1196, 1988. crossref(new window)

7.
Y. Iwasa, Case Studies in Superconducting Magnets, Springer-Verlag, 2009.

8.
Y. M. Miura et al., "Development of Nb3Sn and NbTi CIC Conductors for Superconducting Poloidal Field Coils of JT-60," IEEE Trans. Magn., vol. 12, no. 1, pp. 611-614, 2002.

9.
C. A. Swenson et al., "Quench Protection Heater Design for Superconducting Solenoids," IEEE Trans. Magn., vol. 32, no. 4, pp. 2659-2662, 1996. crossref(new window)

10.
T. Rummel, O. Gaupp, G. Lochner and J. Sapper., "QuenchprotectionforthesuperconductingmagnetsystemofWendels tein7-X," IEEE Trans. Appl. Superconduc., vol. 12, no. 1, pp. 1382-1385, 2002. crossref(new window)