The superconducting magnet system with a cryocooler for the ion source Decris-SC
- 46 Downloads
A superconducting magnet system (SMS) for the multicharged ion source DECRIS-SC was designed and manufactured at the Joint Institute for Nuclear Research. Successful tests of the SMS were conducted in late 2003 and early 2004. The peculiarities of this system are stipulated by the use of a cryocooler 1 W in power for the cryostating of the magnet and also by the special configuration of the magnetic field demanded for the source of ions. Four coils ensure the induction of a magnetic field on the axes of the source of up to 3 T (the stopper ratio of ∼6), which considerably extends the possibilities of the ion source from the point of view of producing intense highly charged ion beams. The problem of compensating the large forces of interaction between the coils and surrounding iron yoke in this magnet has been successfully solved, and a reliable suspension of the magnet in a cryostat realized. To compound the windings, which work in vacuum at indirect cryostating, prepreg (thermosetting fiberglass fabric impregnated with epoxide) is used. A new technology of superconducting magnet protection has been applied with the help of sectionalized windings, using passive elements of protection based on “cold” diodes and resistances. A new technology of active protection has also been applied, with normal zone detectors and heaters.
KeywordsMagnetic Field Epoxide Stopper Fiberglass Joint Institute
Unable to display preview. Download preview PDF.
- 2.B. I. Gikal et al., “Modernization of Cyclic Implanter Its-100,” Preprint OIYaI P9-2003-121 (Joint Institute for Nuclear Research, Dubna, 2003).Google Scholar
- 3.Oxford Instruments Ltd. (UK, 1999); E-mail: email@example.com; http://www.oxford-instruments.com.
- 4.K. Shibutani et al., “Development of Two Types of Cryogen Free Superconducting Magnets,” Adv. Cryog. Eng. 43, 299–305 (1998).Google Scholar
- 5.Steels with Low Contents of Nickel, Ed. by M. V. Pridantsev and G. L. Livshits (Moscow, 1961) [in Russian].Google Scholar
- 6.CAN Superconductors Ltd. (Praha, 1999); http://www.can.cz.
- 7.I. A. Glebov, V. N. Shakhtarin, and Yu. F. Antonov, Problems of Current Lead-in to Superconductor Devices (Leningrad, 1985), pp. 47–50 [in Russian].Google Scholar
- 8.V. I. Datskov and J. G. Weisend II, “Characteristics of Russian Carbon Resistance (TVO) Sryogenic Thermometers,” in Proceedings of ICEC15, Geneva, Italy, 1994, pp. 425–428.Google Scholar