| Paper |
Title |
Page |
| WEPKF057 |
Design and Study of a Superferric Model Dipole and Quadrupole Magnets for the GSI Fast-pulsed Synchrotron SIS100.
|
1735 |
| |
- A.D. Kovalenko, N.N. Agapov, V. Bartenev, A. Donyagin, I. Eliseeva, H.G. Khodzhibagiyan, G.L. Kuznetsov, A. Smirnov, M.A. Voevodin
JINR, Dubna, Moscow Region
- E. Fischer, G. Moritz
GSI, Darmstadt
|
|
| |
New experimental results from the investigation of a model superferric Nuclotron-type dipole and quadrupole magnets are presented. The magnets operate at pulse repetition rate f = 1Hz, providing peak magnetic field B = 2 T and the field gradient G = 34 T/m in the dipoles and quadrupoles respectively. The superconducting coil is made from a hollow multi-filamentary NbTi cable cooled with two phase helium flow. Different possibilities were investigated to reduce AC power losses in the case of a cold iron yoke (T=4.5K). The achieved results are discussed. The value of 9W/m has been obtained for dipole magnet with the yoke at T=50K. The first 50 K yoke quadrupole was designed and tested. Other problems, connected with the magnetic field quality, mechanical and cryogenic stability of the magnets under SIS100 operating conditions are also discussed.
|
|
| WEPKF061 |
Study of Electrical Steel Magnetic Properties for Fast Cycling Magnets of SIS100 and SIS300 Rings
|
1741 |
| |
- I. Bogdanov, S. Kozub, A. Shcherbakov, L. Tkachenko
IHEP Protvino, Protvino, Moscow Region
- E. Fischer, F. Klos, G. Moritz, C. Muehle
GSI, Darmstadt
|
|
| |
The operation conditions of yoke steels in superconducting magnets of the SIS100 and SIS300 are at 4.2 K and unipolar cycles with high magnetic induction. The results of measurements of different classes of electrical steels, both isotropic and anisotropic, in the operating conditions of superconducting dipoles are presented. The measurements are carried out on ring samples in quasistatic mode. Dependence of B(H) as well as values of Hc and hysteresis losses in bipolar and unipolar cycles are determined from hysteresis loops at different temperatures. The anisotropy of steels is measured at room temperature on the strip samples, cut along the rolling direction and across one. The comparison of results on ring and strip samples is carried out. The results of calculations of hysteresis and eddy current losses in iron yoke of fast-cycling dipole for the SIS300 are presented. The recommendations on choice of grade steels for fast cycle superconducting magnets are given.
|
|