We have manufactured the 1/2-scale demonstration no-insulation (NI) REBCO magnet system for ‘skeleton cyclotron’ with no iron core (air-core), called “Ultra Baby Skeleton Cyclotron (UBSC).” The USBC magnet consists of center coils, main coils and AVF coils generating the azimuthal varying field. The outermost size of magnet is approximately 70 cm, and the designed center magnetic field is 1.6...
A detailed overview of the ultimate magnet design developed within Work Package 8 of the collaborative European project HITRIplus is presented. Focused on the development of superconducting magnets for ion therapy synchrotron and gantry systems, the study introduces an innovative approach utilizing a curved Canted Cosine Theta layout magnet based on NbTi superconductor. The design targets a...
The EuroSIG project aims at designing a superconducting carbon ion gantry for hadron therapy that relies on the use of a scanning magnet system located downstream of the last bending dipole.
This layout shifts the burden towards the scanning magnet system that must be compact enough not to impact the gantry radius and must rapidly deflect the beam over a large scanning area to fulfill the...
We present results from testing a high-temperature superconducting (HTS) magnet prototype for proton therapy. This magnet is specifically designed for a novel rotating gantry capable of delivering the entire proton beam energy range (70–225 MeV) while maintaining a fixed magnetic field in the superconducting magnets. The gantry's innovative layout simplifies the magnet design by enabling the...
Canted Cosine Theta magnets are a very promising layout for applications in small accelerator systems, for example for the gantries needed at hadron therapy facilities. A 1-meter-long, straight and combined function magnet demonstrator with 80 mm aperture diameter, 4 T central field and 5 T/m quadrupole component is under development in the framework of the European-funded project IFAST. The...
In particle therapy, multiple treatment angles are generally used to concentrate the absorbed dose in a tumor and to minimize the dose in healthy tissues in the vicinity of the tumor. This is typically achieved with a rotating gantry system. However, implementing a rotating gantry system presents serious challenges due to high cost and enlargement of a space for a large-scale...
Various types of magnets, including dipole, quadrupole, sextupole and combined-function type, are used for beam transportation and delivery in proton therapy systems (PTS). Toward urgent demands for lightweight PTS, we will discuss the opportunities and challenges on magnet design issues, especially for gantry beamline. Two gantry beamline design schemes will be introduced and compared: (1) a...
Subtle variations in cell density often serve as precursors to shifts in physiological characteristics. Consequently, the accurate detection and detailed characterization of cell density are of paramount importance for elucidating cellular functional states, pharmacological responses, and cellular heterogeneity. Contemporary mainstream methods for density-based characterization predominantly...
Microrobots are increasingly being applied in bionics and medicine, demonstrating significant potential in minimally invasive surgery and targeted drug delivery. Among them, magnetic microrobots have attracted considerable attention, driven by the interaction between external magnetic fields and built-in permanent magnets. This enables the separation of the driving system from the robot body,...
Closed-circuit cooling of superconducting magnets unlocks new possibilities for advanced accelerator designs and applications. In hadron therapy, it has clear potential for compact rotating gantries, while for future accelerator cryogenic systems it could significantly reduce helium inventories. For this reason, a 1 m long Closed Helium Circuit Cooled (CHiC) straight demonstrator magnet is...
