Booster Dipole Magnets Research Articles

Research and development of the high precision low field dipole magnet for CEPC Booster

In the Conceptual Design Report (CDR) stage of the Circular Electron and Positron Collider (CEPC), the injection energy of the Booster is 10 GeV and minimal working field of the dipole magnets is only 29 G, the magnets with iron cores could not meet the requirement of the field precision due to the remnant field. In the CEPC Technical Design Report (TDR) stage, the injection energy of the Booster is increased to 30 GeV and the minimal working field of the dipole magnets is raised to 95 G so that the influence of the remnant field becomes relatively small, the iron core dipole magnets can be used for the Booster. In this paper, the technical design of the CEPC Booster dipole magnets is described, the development and test of a full scale prototype pure dipole magnet are presented.

Magnetic design and analysis of the SSC High Energy Booster dipole magnets

This paper presents key magnetic design considerations and analyses performed on the Superconducting Super Collider (SSC) High Energy Booster dipole magnets (HDM). The design considerations include: optimization of the cell cross section to establish low magnetic field harmonic content and specified field strength throughout a wide range of cable azimuthal sizes; effects of wedge geometry and cable stacking procedures on the field harmonics; and effects of yoke geometry and material variations on the central field strength and harmonics of the magnet.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

AC losses in the SSC high energy booster dipole magnets

The baseline design for the SSC (Superconducting Super Collider) high energy booster (HEB) has dipole bending magnets with a 50-mm aperture. An analysis of the cryogenic heat load due to AC losses generated in the HEB ramp cycle is reported for this magnet. Included in this analysis are losses from superconductor hysteresis, yoke hysteresis, strand eddy currents, and cable eddy currents. The AC loss impact of 2.5 mu m vs. 6 mu m filament conductor is presented. A 60-mm aperture design is also investigated. >